Thesis

  • Y. Liu, "Non-Orthogonal Multiple Access for 5G: Design and Performance Enhancement'", Queen Mary University of London

    • Book

  • Y. Liu, L. Liu, Z. Ding, and X. Shen, "Next Generation Multiple Access", Wiley-IEEE Press, 2024, [link]
  • X. Lin, J. Zhang, Y. Liu, and J. Kim, "Fundamentals of 6G Communications and Networking", Springer, 2024, [link]
  • Y. Liu, Z. Qin and Z. Ding, "Non-Orthogonal Multiple Access for Massive Connectivity", Springer, Oct. 2019, [link] included in [IEEE Best Readings] on NOMA.

    • Book Chapters

    1. X. Mu, Z. Wang, and Y. Liu, "Exploiting Non-orthogonal Multiple Access in Integrated Sensing and Communications", In: Y. Liu, L. Liu, Z. Ding, and X. Shen (Eds.), Next Generation Multiple Access, Wiley-IEEE Press, 2024.
    2. X. Mu, J. Xu, and Y. Liu, "Reconfigurable Intelligent Surfaces Toward 6G: From Reflection Only to Simultaneous Transmission and Reflection (STAR)", In: X. Lin, J. Zhang, Y. Liu, and J. Kim (Eds.), Fundamentals of 6G Communications and Networking, Springer, 2024.
    3. W. Yi, Y. Liu, and Z. Ding, , "Developing NOMA to Next-Generation Multiple Access", In: X. Lin, J. Zhang, Y. Liu, and J. Kim (Eds.), Fundamentals of 6G Communications and Networking, Springer, 2024.
    4. T. Hou, Y. Liu, and X. Sun, "Non-Orthogonal Multiple Access for UAV Communications", In: Y. Zeng, I. Guvenc, R. Zhang, G. Geraci, and D. W. Matolak (Eds.), UAV Communications for 5G and Beyond, Wiley, 2020.
    5. Y. Liu, and M. Elkashlan, "On the Application of SWIPT on NOMA Networks", In: D. W. Kwan Ng, T. Q. Duong, C. Zhong, and R. Schober (Eds.), Wireless Information and Power Transfer: Theory and Practice, Wiley, 2019.
    6. Z. Qin Y. Liu, and A. Nallanathan, "NOMA based Ultra Dense Networks", In: H. Zhang, J. Lee, T. Quek, and C. Lin I (Eds.), Ultra Dense Networks: Principles and Technologies, Cambridge University Press, 2019.
    7. B. Xu, Y. Chen and Y. Liu, "Heterogeneous NOMA with Energy Cooperation", In: M. Vaezi, Z. Ding, and H. V. Poor (Eds.), Multiple Access Techniques for 5G Wireless Networks and Beyond, Springer International Publishing, 2019. [link]

    Selected Journal Publications

    See a full list of publications on [Google Scholar]. See a selected list of open source codes on [Github].

      Near-Field Communications (NFC)/Near-field Sensing (NISE)

      2024

    1. J. Wang, J. Xiao, Y. Zou, W. Xie and Y. Liu, "Wideband Beamforming for RIS Assisted Near-Field Communications", IEEE Transactions on Wireless Communications, Early Access, 2024. [Arxiv]
    2. C. Ouyang, Z. Wang, B. Zhao, X. Zhang and Y. Liu, "On the Impact of Reactive Region on the Near-Field Channel Gain", IEEE Communications Letters, Early Access, 2024. [Arxiv]
    3. J. Liu, G. Yang, Y. Liu and X. Zhou, "RIS Empowered Near-Field Covert Communications", IEEE Transactions on Wireless Communications, Early Access, 2024. [Arxiv]
    4. H. Jiang, Z. Wang and Y. Liu, "Sense-Then-Train: An Active-Sensing-Based Beam Training Design for Near-Field MIMO Systems", IEEE Transactions on Wireless Communications, Early Access, 2024. [Arxiv]
    5. B. Xu, J. Zhang, H. Du, Z. Wang, Y. Liu et al, "Resource Allocation for Near-Field Communications: Fundamentals, Tools, and Outlooks", IEEE Wireless Communications, Early Access, 2024. [Arxiv]
    6. Z. Wang, X. Mu and Y. Liu, "Beamfocusing Optimization for Near-Field Wideband Multi-User Communications", IEEE Transactions on Communications, Early Access, 2024. [Arxiv]
    7. H. Li, Z. Wang, X. Mu, P. Zhiwen and Y. Liu, "Near-Field Integrated Sensing, Positioning, and Communication: A Downlink and Uplink Framework", IEEE Journal on Selected Areas in Communications, vol. 42, no. 9, pp. 2196-2212, Sept. 2024. [Arxiv]
    8. Z. Zhang, Y. Liu, Z. Wang, J. Chen and T. Q. S. Quek, "Dynamic MIMO Architecture Design for Near-Field Communications", IEEE Transactions on Wireless Communications, Early Access, 2024. [Arxiv]
    9. Z. Zhang, Y. Liu, Z. Wang, J. Chen and D. I. Kim, "Near Field Communications for DMA-NOMA Networks", IEEE Internet of Things Journal, vol. 11, no. 17, pp. 28021-28035, 1 Sept.1, 2024. [Arxiv]
    10. Z. Zhang, Y. Liu, Z. Wang, X. Mu and J. Chen, "Simultaneous Wireless Information and Power Transfer in Near-Field Communications", IEEE Internet of Things Journal, vol. 11, no. 16, pp. 27760-27774, 15 Aug.15, 2024. [Arxiv]
    11. J. Xiao, J. Wang, Z. Wang, J. Wang, W. Xie and Y. Liu, "Multi-Task Learning for Near/Far Field Channel Estimation in STAR-RIS Networks", IEEE Transactions on Communications, Early Access, 2024.
    12. C. Meng, D. Ma, X. Chen, Z. Feng and Y. Liu, "Cramér-Rao Bounds for Near-Field Sensing: A Generic Modular Architecture", IEEE Wireless Communications Letters, vol. 13, no. 8, pp. 2205-2209, Aug. 2024. [Arxiv]
    13. J. Xiao, J. Wang, Z. Wang, J. Wang, W. Xie and Y. Liu, "Multi-Task Learning for Near/Far Field Channel Estimation in STAR-RIS Networks", IEEE Transactions on Communications, Early Access, 2024.
    14. S. Lv, Y. Liu, X. Xu, A. Nallanathan and A. L. Swindlehurst, "RIS-aided Near-Field MIMO Communications: Codebook and Beam Training Design", IEEE Transactions on Wireless Communications, Early Access, 2024. [Arxiv]
    15. B. Zhao, C. Ouyang, Y. Liu, X. Zhang and H. V. Poor, "Modeling and Analysis of Near-Field ISAC", IEEE Journal of Selected Topics in Signal Processing, Early Access, 2024. [Arxiv]
    16. Z. Wang, X. Mu, Y. Liu and R. Schober, "TTD Configurations for Near-Field Beamforming: Parallel, Serial, or Hybrid?", IEEE Transactions on Communications, vol. 72, no. 6, pp. 3783-3799, June 2024。 [Arxiv]
    17. Z. Zhang, Y. Liu, Z. Wang, X. Mu and J. Chen, "Physical Layer Security in Near-Field Communications", IEEE Transactions on Vehicular Technology, vol. 73, no. 7, pp. 10761-10766, July 2024. [Arxiv]
    18. X. Mu, J. Xu, Y. Liu and L. Hanzo, "Reconfigurable Intelligent Surface-Aided Near-Field Communications for 6G: Opportunities and Challenges", IEEE Vehicular Technology Magazine, vol. 19, no. 1, pp. 65-74, March 2024. [Arxiv]
    19. C. Wu, C. You, Y. Liu, L. Chen, S. Shi, "Two-Stage Hierarchical Beam Training for Near-Field Communications", IEEE Transactions on Vehicular Technology, vol. 73, no. 2, pp. 2032-2044, Feb. 2024. [Arxiv]

      20. 2023

    20. Z. Xie, Y. Liu, J. Xu, X. Wu, A. Nallanathan, "Performance Analysis for Near-Field MIMO: Discrete and Continuous Aperture Antennas", IEEE Wireless Communications Letters, vol. 12, no. 12, pp. 2258-2262, Dec. 2023. [Arxiv]
    21. Y. Liu, Z. Wang, J. Xu, C Ouyang, X. Mu and R. Schober, "Near-Field Communications: A Tutorial Review", IEEE Open Journal of the Communications Society, vol. 4, pp. 1999-2049, 2023. [Arxiv]
    22. J. Xu, X. Mu and Y. Liu, "Exploiting STAR-RISs in Near-Field Communications", IEEE Transactions on Wireless Communications, 2023. [Arxiv]
    23. Z. Wang, X. Mu and Y. Liu, "Near-Field Integrated Sensing and Communications", IEEE Communications Letters, vol. 27, no. 8, pp. 2048-2052, Aug. 2023. [Arxiv]

      24. Mobile Edge Generation (MEG)

      2024

    24. R. Zhong, X. Mu, Y. Zhang, M. Jaber and Y. Liu, "Mobile Edge Generation: A New Era to 6G", IEEE Network, Early Access, 2024. [Arxiv]

      25. Integrated Sensing and Communication (ISAC)

      2024

    25. B. Zhao, C. Ouyang, X. Zhang and Y. Liu, "Downlink and Uplink NOMA-ISAC with Signal Alignment", IEEE Transactions on Wireless Communications, Early Access. 2024. [Arxiv]
    26. C. Ouyang, Y. Liu and X. Zhang, "Revealing the Impact of Beamforming in ISAC", IEEE Wireless Communications Letters, vol. 13, no. 2, pp. 362-366, Feb. 2024. [Arxiv]
    27. Z. Zhang, Y. Liu, Z. Wang and J. Chen, "STARS-ISAC: How Many Sensors Do We Need?", IEEE Transactions on Wireless Communications, vol. 23, no. 2, pp. 1085-1099, Feb. 2024. [Arxiv]
    28. Z. Wang, X. Mu and Y. Liu, "Bidirectional Integrated Sensing and Communication: Full-Duplex or Half-Duplex?", IEEE Transactions on Wireless Communications, vol. 23, no. 8, pp. 8184-8199, Aug. 2024. [Arxiv]

      29. 2023

    29. C. Ouyang, Y. Liu and H. Yang, "Revealing the Impact of SIC in NOMA-ISAC", IEEE Wireless Communications Letters, vol. 12, no. 10, pp. 1707-1711, Oct. 2023. [Arxiv]
    30. J. Zuo, Y. Liu, C. Zhu, Y. Zou, D. Zhang and N. Al-Dhahir, "Exploiting NOMA and RIS in Integrated Sensing and Communication", IEEE Transactions on Vehicular Technology, vol. 72, no. 10, pp. 12941-12955, Oct. 2023. [Arxiv]
    31. C. Ouyang, Y. Liu, H. Yang, and N. Al-Dhahir, "Integrated Sensing and Communications: A Mutual Information-Based Framework", IEEE Communications Magazine, vol. 61, no. 5, pp. 26-32, May 2023. [Arxiv]
    32. Z. Wang, X. Mu and Y. Liu, "STARS Enabled Integrated Sensing and Communications", IEEE Transactions on Wireless Communications, vol. 22, no. 10, pp. 6750-6765, Oct. 2023. [Arxiv]
    33. Y. Xu, T. Zhang, Y. Liu and D. Yang, "UAV-Enabled Integrated Sensing, Computing, and Communication: A Fundamental Trade-off", IEEE Wireless Communications Letters, vol. 12, no. 5, pp. 843-847, May 2023.
    34. C. Ouyang, Y. Liu and H. Yang, "MIMO-ISAC: Performance Analysis and Rate Region Characterization", IEEE Wireless Communications Letters, vol. 12, no. 4, pp. 669-673, April 2023. [Arxiv]
    35. C. Zhang, W. Yi, Y. Liu and L. Hanzo, "Semi-Integrated-Sensing-and-Communication (Semi-ISaC): From OMA to NOMA", IEEE Transactions on Communications, vol. 71, no. 4, pp. 1878-1893, April 2023. [Arxiv]
    36. X. Mu, Z. Wang and Y. Liu, "NOMA for Integrating Sensing and Communications towards 6G: A Multiple Access Perspective", IEEE Wireless Communications, vol. 31, no. 3, pp. 316-323, June 2024. [Arxiv]
    37. Z. Wang, X. Mu, Y. Liu, X. Xu and P. Zhang, "NOMA-aided Joint Communication, Sensing, and Multi-tier Computing Systems", IEEE Journal on Selected Areas in Communications, vol. 41, no. 3, pp. 574-588, March 2023. [Arxiv]

      38. 2022

    38. C. Ouyang, Y. Liu and H. Yang, "Performance of Downlink and Uplink Integrated Sensing and Communications (ISAC) Systems", IEEE Wireless Communications Letters, vol. 11, no. 9, pp. 1850-1854, Sept. 2022. [Arxiv]
    39. C. Ouyang, Y. Liu and H. Yang, "On the Performance of Uplink ISAC Systems", IEEE Communications Letters; vol. 26, no. 8, pp. 1769-1773, Aug. 2022. [Arxiv]
    40. Z. Wang, Y. Liu, X. Mu, Z. Ding, and O. A. Dobre, “NOMA Empowered Integrated Sensing and Communication”, IEEE Communication Letters, vol. 26, no. 3, pp. 677-681, March 2022. [Arxiv]

      41. Non-Orthogonal Multiple Access (NOMA)

      2024

    41. M. Zhang, R. Zhong, X. Mu and Y. Liu, "Machine Learning enabled Heterogeneous Semantic and Bit Communication", IEEE Transactions on Wireless Communications, Early Access, 2024.
    42. Y. Zhang, R. Zhong, Y. Liu, W. Xu and P. Zhang, "Interference Suppressed NOMA for Semantic-aware Communication Networks", IEEE Transactions on Wireless Communications, vol. 23, no. 8, pp. 10383-10397, Aug. 2024.
    43. Z. Xie, W. Yi, X. Wu, Y. Liu and A. Nallanathan, "Is the Envelope Beneficial to Non-Orthogonal Multiple Access?", IEEE Transactions on Communications, vol. 72, no. 3, pp. 1625-1640, March 2024. [Arxiv]

      44. 2023

    44. X. Mu, and Y. Liu, "Exploiting Semantic Communication for Non-Orthogonal Multiple Access", IEEE Journal on Selected Areas in Communications, vol. 41, no. 8, pp. 2563-2576, Aug. 2023. [Arxiv]
    45. X. Xu, Y. Liu, X. Mu, Q. Chen and Z. Ding, "Cluster-Free NOMA Communications Towards Next Generation Multiple Access", IEEE Transactions on Communications, vol. 71, no. 4, pp. 2184-2200, April 2023. [Arxiv]
    46. X. Xu, Y. Liu, Q. Chen, X. Mu and Z. Ding, "Distributed Auto-Learning GNN for Multi-Cell Cluster-Free NOMA Communications", IEEE Journal on Selected Areas in Communications, vol. 41, no. 4, pp. 1243-1258, April 2023.[Arxiv]
    47. X. Xu, Y. Liu, X. Mu, Q. Chen, H. Jiang and Z. Ding, "Artificial Intelligence Enabled NOMA Toward Next Generation Multiple Access", IEEE Wireless Communications, vol. 30, no. 1, pp. 86-94, February 2023. [Arxiv]
    48. C. Zhao, Y. Liu, Y. Cai, M. Zhao and Z. Ding, "Non-Orthogonal Multiple Access for UAV-Aided Heterogeneous Networks: A Stochastic Geometry Model", IEEE Transactions on Vehicular Technology, vol. 72, no. 1, pp. 940-956, Jan. 2023. [Arxiv]
    49. X. Mu, Y. Liu, L. Guo and N. Al-Dhahir, "Heterogeneous Semantic and Bit Communications: A Semi-NOMA Scheme", IEEE Journal on Selected Areas in Communications, vol. 41, no. 1, pp. 155-169, Jan. 2023. [Arxiv]

      50. 2022

    50. Z. Liu, Y. Liu, et al., "Performance Analysis of Reconfigurable Intelligent Surface Assisted Two-Way NOMA Networks", IEEE Transactions on Vehicular Technology, vol. 71, no. 12, pp. 13091-13104, Dec. 2022. [Arxiv]
    51. Y. Liu, W. Yi, Z. Ding, X. Liu, O. Dobre, and N. Al-Dhahir, "Developing NOMA to Next Generation Multiple Access (NGMA): Future Vision and Research Opportunities", IEEE Wireless Communications; vol. 29, no. 6, pp. 120-127, December 2022. [Arxiv]
    52. X. Mu, Y. Liu, L. Guo, J. Lin, and L. Hanzo, "NOMA-Aided Joint Radar and Multicast-Unicast Communication Systems", IEEE Journal on Selected Areas in Communications (JSAC), vol. 40, no. 6, pp. 1978-1992, June 2022. [Arxiv]
    53. Y. Liu, S. Zhang, X. Mu, Z. Ding, R. Schober, N. Al-Dhahir, E. Hossain, X. Shen, "Evolution of NOMA Toward Next Generation Multiple Access (NGMA) for 6G", IEEE Journal on Selected Areas in Communications (JSAC); vol. 40, no. 4, pp. 1037-1071, April 2022. [Arxiv] (Web of Science Highly Cited Paper)
    54. C. Zhang, Y. Liu, and Z. Ding, ``Semi-Grant-Free NOMA: A Stochastic Geometry Model'', IEEE Transactions on Wireless Communications; vol. 21, no. 2, pp. 1197-1213, Feb. 2022. [Arxiv]

      55. 2021

    55. X. Mu, Y. Liu, L. Guo, J. Lin and Z. Ding ``Energy-Constrained UAV Data Collection Systems: NOMA and OMA'', IEEE Transactions on Vehicular Technology; vol. 70, no. 7, pp. 6898-6912, July 2021. [Arxiv]
    56. C. Deng, M. Liu, X. Li, and Y. Liu, ``Hardware Impairments Aware Full-Duplex NOMA Networks Over Rician Fading Channels'', IEEE System Journal; vol. 15, no. 2, pp. 2515-2518, June 2021. [Arxiv]
    57. X. Liu, Y. Liu, Z. Yang, X. Yue, C. Wang and Y. Chen, "Integrated 3C in NOMA-enabled Remote-E-Health Systems"', IEEE Wireless Communications; vol. 28, no. 3, pp. 62-68, June 2021. [Arxiv]
    58. Z. Song, Y. Liu, and, X. Sun, ``Joint Task Offloading and Resource Allocation for NOMA-Enabled Multi-Access Mobile Edge Computing'', IEEE Transactions on Communications; vol. 69, no. 3, pp. 1548-1564, March 2021.

      59. 2020

    59. X. Li, M. Zhao, Y. Liu, L. Li, Z. Ding, and A. Nallanathan, ``Secrecy Analysis of Ambient Backscatter NOMA Systems under I/Q Imbalance'', IEEE Transactions on Vehicular Technology; vol. 69, no. 10, pp. 12286-12290, Oct. 2020. [Arxiv](Web of Science Highly Cited Paper)
    60. X. Li, Q. Wang, Y. Liu, T. A.Tsiftsis, Z. Ding, and A. Nallanathan, "UAV-Aided Multi-Way NOMA Networks with Residual Hardware Impairments", IEEE Wireless Communications Letters; vol. 9, no. 9, pp. 1538-1542, Sept. 2020 [Arxiv]
    61. Z. Yang, Y. Liu, Y. Chen, and N. AL-Dhahir, ``Cache-Aided NOMA Mobile Edge Computing: A Reinforcement Learning Approach'', IEEE Transactions on Wireless Communications; vol. 19, no. 10, pp. 6899-6915, Oct. 2020. [Arxiv]
    62. T. Hou, Y. Liu, Z. Song, X. Sun, Y. Chen, ``UAV-to-Everything (U2X) Networks Relying on NOMA: A Stochastic Geometry Model'', IEEE Transactions on Vehicular Technology; vol. 69, no. 7, pp. 7558-7568, July 2020. [Arxiv]
    63. H. Shen, W. Yi, Y. Liu, Z. Qin, and A. Nallanathan, "Coverage Analysis of MmWave Networks With Cooperative NOMA Systems'", IEEE Communications Letters; vol. 24, no. 7, pp. 1544-1547, July 2020.
    64. X. Yue, Y. Liu, Y. Yao, T. Li, X. Li, R. Liu, and A. Nallanathan, ``Outage Behaviors of NOMA-based Satellite Network over Shadowed-Rician Fading Channels'', IEEE Transactions on Vehicular Technology; vol. 69, no. 6, pp. 6818-6821, June 2020. [Arxiv]
    65. X. Mu, Y. Liu, L. Guo and J. Lin, "Non-Orthogonal Multiple Access for Air-to-Ground Communication", IEEE Transactions on Communications; vol. 68, no. 5, pp. 2934-2949, May 2020. [Arxiv]
    66. T. Hou, Y. Liu, Z. Song, X. Sun, Y. Chen, ``NOMA Enhanced Terrestrial and Aerial IoT Networks with Partial CSI'' IEEE Internet of Things; vol. 7, no. 4, pp. 3254-3266, April 2020. [Arxiv]
    67. X. Yue, Y. Liu, Y. Hao, X. Li, R. Liu and A. Nallanathan, ``Secure Communications in a Unified Non-Orthogonal Multiple Access Framework'', IEEE Transactions on Wireless Communications, vol. 19, no. 3, pp. 2163-2178, March 2020. [Arxiv]
    68. J. Cui, Y. Liu, Z. Ding, P, Fan, A. Nallanathan, and L. Hanzo, "Next-generation Mm-Wave Small-cell Networks", IEEE Vehicular Communication Magazine; vol. 15, no. 1, pp. 46-53, March 2020.
    69. X. Li, J. Li, Y. Liu, Z. Ding, and A. Nallanathan, ``Residual Transceiver Hardware Impairments on Cooperative NOMA Networks'', IEEE Transactions on Wireless Communications; vol. 19, no. 1, pp. 680-695, Jan. 2020. (Web of Science Highly Cited Paper)
    70. X. Li, M. Liu, C. Deng, T. Mathiopoulos, Z. Ding, and Y. Liu ``Full-Duplex Cooperative NOMA Relaying Systems with I/Q Imbalance and Imperfect SIC", IEEE Wireless Communications Letters; ol. 9, no. 1, pp. 17-20, Jan. 2020.

      71. 2019

    71. M. Vaezi, G. Amarasuriya, Y. Liu, A. Arafa, F. Fang, Z. Ding, ``Interplay Between NOMA and Other Emerging Technologies: A Survey'', IEEE Transactions on Cognitive Communications and Networking (TCCN); vol. 5, no. 4, pp. 900-919, Dec. 2019 (invited paper).
    72. T. Hou, Y. Liu, Z. Song, X. Sun, Y. Chen,``Exploiting NOMA for Multi-UAV Communications in Large-Scale Networks'', IEEE Transactions on Communications; vol. 67, no. 10, Oct. 2019.
    73. Y. Liu, Z. Ding, N. Al-Dhahir, R. Schober, O. A. Dobre, G. K. Karagiannidis, and P. Fan, "Editorial -- Introduction to the Issue on Signal Processing Advances for Non-Orthogonal Multiple Access in Next Generation Wireless Networks'", IEEE Journal of Selected Topics in Signal Processing;vol. 13, no. 3, pp. 388-391, June 2019.
    74. W. Yi, Y. Liu, A. Nallanathan and M. Elkashlan, ``Clustered Millimeter Wave Networks with Non-Orthogonal Multiple Access'', IEEE Transactions on Communications; vol. 67, no. 6, pp. 4350-4364, June 2019.
    75. Y. Fu, Y. Liu, H. Wang, Z. Shi and Y. Liu ``Mode Selection Between Index Coding and Superposition Coding in Cache-based NOMA Networks'', IEEE Communications Letters; vol. 23, no. 3, pp. 478-481, March 2019.
    76. Y. Liu, Z. Qin, Y. Cai, Y. Gao, G. Ye Li, and A. Nallanathan, "UAV Communications Based on Non-Orthogonal Multiple Access'" IEEE Wireless Communications; vol. 26, no. 1, pp. 52-57, Feb. 2019, [Arxiv] included in [IEEE Best Readings] on UAV. (Web of Science Highly Cited Paper)
    77. T. Hou, Y. Liu, Z. Song, X. Sun, Y. Chen, "Multiple Antenna Aided NOMA in UAV Networks: A Stochastic Geometry Approach", IEEE Transactions on Communications; vol. 67, no. 2, pp. 1031-1044, Feb. 2019. [Arxiv]

      78. 2018

    78. Z. Song, Y. Liu, X. Sun "Joint Radio and Computational Resource Allocation for NOMA Based Mobile Edge Computing in Heterogeneous Networks", IEEE Communications Letters; vol. 22, no. 12, pp. 2559-2562, Dec. 2018.
    79. X. Yue, Z. Qin, Y. Liu, S. Kao, and Y. Chen, "A Unified Framework for Non-Orthogonal Multiple Access", IEEE Transactions on Communications; VOL. 66, NO. 11, NOVEMBER 2018. [PDF]
    80. J. Cui, Y. Liu, Z. Ding, P. Fan, and A. Nallanathan, "QoE-based Resource Allocation for Multi-cell NOMA Networks", IEEE Transactions on Wireless Communications; vol. 17, no. 9, pp. 6160-6176, Sept. 2018. [PDF]
    81. X. Yue, Y. Liu, S. Kao, A. Nallanathan, and Y. Chen, "Modeling and Analysis of Two-Way Relay Non-Orthogonal Multiple Access Systems", IEEE Transactions on Communications; VOL. 66, NO. 9, SEPTEMBER 2018. [PDF]
    82. X. Yue, Y. Liu, S. Kao, A. Nallanathan, and Z. Ding, "Spatially Random Relay Selection for Full/Half-Duplex Cooperative NOMA Networks", IEEE Transactions on Communications; vol. 66, no. 8, pp. 3294-3308, Aug. 2018. [PDF]
    83. H. Xing, Y. Liu, A. Nallanathan, Z. Ding and H. V. Poor, "Optimal Throughput Fairness Trade-offs for Downlink Non-Orthogonal Multiple Access over Fading Channels", IEEE Transactions on Wireless Communications; vol. 17, no. 6, pp. 3556-3571, June 2018. [Arxiv]
    84. Z. Qin, X. Yue, Y. Liu, Z. Ding, and A. Nallanathan, “User Association and Resource Allocation in Unified NOMA Enabled Heterogeneous Ultra Dense Networks'', IEEE Communication Magazine; vol. 56, no. 6, pp. 86-92, June 2018. [Arxiv]
    85. Y. Liu, H. Xing, C. Pan, A. Nallanathan, M. Elkashlan, and L. Hanzo, ``Multiple Antenna Assisted Non-Orthogonal Multiple Access'', IEEE Wireless Communications; vol. 25, no. 2, pp. 17-23, April 2018. [Arxiv]
    86. W. Wang, Y. Liu, Z. Luo, T. Jiang, Q. Zhang, and A. Nallanathan, "Toward Cross-Layer Design for Non-Orthogonal Multiple Access: A Quality-of-Experience Perspective", IEEE Wireless Communications; vol. 25, no. 2, pp. 118-124, April 2018. [Arxiv]
    87. J. Cui, Y. Liu, Z. Ding, P. Fan, and A. Nallanathan, "Optimal User Scheduling and Power Allocation for Millimeter Wave NOMA Systems", IEEE Transactions on Wireless Communications; vol. 17, no. 3, pp. 1502-1517, Mar. 2018. [Arxiv]
    88. X. Yue, Y. Liu, S. Kao, A. Nallanathan, and Z. Ding, "Exploiting Full/Half-Duplex User Relaying in NOMA Systems", IEEE Transactions on Communications; vol. 66, no. 2, pp. 560-575, Feb. 2018. (Web of Science Highly Cited Paper) [PDF]

      89. 2017

    89. Y. Liu, Z. Qin, M. Elkashlan, Z. Ding, A. Nallanathan and L. Hanzo "Non-orthogonal Multiple Access for 5G and Beyond", Proceedings of the IEEE; vol. 105, no. 12, pp. 2347-2381, Dec. 2017. (Web of Science Highly Cited Paper, An interesting demonstration for this paper is available on [Video] [Researchgate] and [Slides]. A full tutorial version is available here [Tutorial], included in [IEEE Best Readings] on NOMA )
    90. Y. Liu, Z. Qin, M. Elkashlan, A. Nallanathan and J. A. McCann, "Non-orthogonal Multiple Access in Large-Scale Heterogeneous Networks", IEEE Journal on Selected Areas in Communications; vol. 35, no. 12, pp. 2667-2680, Dec. 2017 [Arxiv], [IEEE Best Readings] on NOMA).
    91. J. Zhao, Y. Liu, K. K. Chai, Y. Chen, and M. Elkashlan, "Joint Subchannel and Power Allocation for NOMA Enhanced D2D Communications", IEEE Transactions on Communications; vol. 65, no. 11, Nov. 2017. [PDF]
    92. J. Zhao, Y. Liu, K. K. Chai, A. Nallanathan, Y. Chen, and Z. Han, "Spectrum Allocation and Power Control for Non-Orthogonal Multiple Access in HetNets", IEEE Transactions on Wireless Communications; vol. 16, no. 9, Sep. 2017. [PDF]
    93. Y. Liu, Z. Qin, M. Elkashlan, Y. Gao, and L. Hanzo, "Enhancing the Physical Layer Security of Non-orthogonal Multiple Access in Large-scale Networks", IEEE Transactions on Wireless Communications; vol. 16, no. 3, pp. 1656-1672, Mar. 2017. [Arxiv] (Web of Science Highly Cited Paper, included in [IEEE Best Readings] on NOMA).
    94. Z. Ding, Y. Liu, J. Choi, Q. Sun, M. Elkashlan, Chih-Lin I, and H. V. Poor, "Application of Non-orthogonal Multiple Access in LTE and 5G Networks", IEEE Communication Magazine; vol.~55, no.~2, pp. 185--191, Feb. 2017. [Arxiv] (Web of Science Highly Cited Paper)

      95. 2016

    95. Y. Liu, Z. Ding, M. Elkashlan, and J. Yuan, "Non-orthogonal Multiple Access in Large-Scale Underlay Cognitive Radio Networks", IEEE Transactions on Vehicular Technology; vol. 65, no. 12, pp. 10152--10157, Dec. 2016. (Web of Science Highly Cited Paper [Arxiv], included in [IEEE Best Readings] on NOMA.)
    96. Y. Liu, M. Elkashlan, Z. Ding, and G. K. Karagiannidis, "Fairness of User Clustering in MIMO Non-orthogonal Multiple Access Systems", IEEE Communications Letters; vol. 20, no. 7, pp. 1465-1468, July 2016. [PDF] (Included in [IEEE Best Readings] on NOMA.)
    97. Y. Liu, Z. Ding, M. Elkashlan, and H. V. Poor, "Cooperative Non-orthogonal Multiple Access with Simultaneous Wireless Information and Power Transfer", IEEE Journal on Selected Areas in Communications; vol. 34, no. 4, pp. 938--953 Apr. 2016. [Slides] [Arxiv] (Web of Science Highly Cited Paper, Top 15 most popular article on JSAC, included in [IEEE Best Readings] on NOMA.)

      98. Simultaneously Transmitting And Reflecting Surfaces (STARS)

      2024

    98. H. Zhu, Y. Liu, Y. -C. Wu and V. K. N. Lau, "A Unified Framework for STAR-RIS Coefficients Optimization", IEEE Transactions on Signal Processing, Early Access, 2024. [Arxiv]
    99. X. Yue, J. Xie, C. Ouyang, Y. Liu, X. Shen and Z. Ding, "Active Simultaneously Transmitting and Reflecting Surface Assisted NOMA Networks", IEEE Transactions on Wireless Communications, vol. 23, no. 8, pp. 9912-9926, Aug. 2024. [Arxiv]
    100. L. -H. Shen, P. -C. Wu, C. -J. Ku, Y. -T. Li, K. -T. Feng, Y. Liu, and L. Hanzo, "D-STAR: Dual Simultaneously Transmitting and Reflecting Reconfigurable Intelligent Surfaces for Joint Uplink/Downlink Transmission", IEEE Transactions on Communications , vol. 72, no. 6, pp. 3305-3322, June 2024. [Arxiv]
    101. N. Xue, X. Mu, Y. Liu and Y. Chen, "NOMA Assisted Full Space STAR-RIS-ISAC", IEEE Transactions on Wireless Communications, vol. 23, no. 8, pp. 8954-8968, Aug. 2024.
    102. Z. Hu, R. Zhong, C. Fang and Y. Liu, "Caching-at-STARS: the Next Generation Edge Caching", IEEE Transactions on Wireless Communications , vol. 23, no. 8, pp. 8372-8387, Aug. 2024. [Arxiv]
    103. Y. Liu, J. Kelly, M. Holm, S. Gopal, S. R. Aghdam and Y. Liu, "Unit Cell Design for Intelligent Reflecting and Refracting Surface (IRS) With Independent Electronic Control Capability", IEEE Antennas and Wireless Propagation Letters , vol. 23, no. 1, pp. 414-418, Jan. 2024.
    104. C. Wu, C. You, Y. Liu, S. Han, M. Di Renzo, "Two-Timescale Design for STAR-RIS Aided NOMA Systems", IEEE Transactions on Communications, vol. 72, no. 1, pp. 585-600, Jan. 2024. [Arxiv]
    105. S. Lv, X. Xu, S. Han, Y. Liu, P. Zhang and A. Nallanathan, "STAR-RIS Enhanced Finite Blocklength Transmission for Uplink NOMA Networks", IEEE Transactions on Communications, vol. 72, no. 1, pp. 273-287, Jan. 2024.
    106. J. Lei, T. Zhang and Y. Liu, "Hybrid NOMA for STAR-RIS Enhanced Communication", IEEE Transactions on Vehicular Technology, vol. 73, no. 1, pp. 1497-1502, Jan. 2024. [Arxiv]
    107. J. Lei, T. Zhang, X. Mu and Y. Liu, "NOMA for STAR-RIS Assisted UAV Networks", IEEE Transactions on Communications , vol. 72, no. 3, pp. 1732-1745, March 2024. [Arxiv]
    108. H. Zhou, M. Erol-Kantarci, Y. Liu and H. V. Poor, "A Survey on Model-Based, Heuristic, and Machine Learning Optimization Approaches in RIS-Aided Wireless Networks", IEEE Communications Surveys & Tutorials, vol. 26, no. 2, pp. 781-823, Secondquarter 2024. [Arxiv]
    109. Z. Xie, Y. Liu, W. Yi, X. Wu, A. Nallanathan, "Physical Layer Security for STAR-RIS-NOMA: A Stochastic Geometry Approach", IEEE Transactions on Wireless Communications, vol. 23, no. 6, pp. 6030-6044, June 2024. [Arxiv]
    110. N. Zhang, Y. Liu, X. Mu, W. Wang and A. Huang, "Queue-Aware STAR-RIS Assisted NOMA Communication Systems", IEEE Transactions on Wireless Communications, vol. 23, no. 5, pp. 4786-4801, May 2024. [Arxiv]
    111. J. Xu, X. Mu and Y. Liu, "Exploiting STAR-RISs in Near-Field Communications", IEEE Transactions on Wireless Communications, vol. 23, no. 3, pp. 2181-2196, March 2024. [Arxiv]

      112. 2023

    112. X. Gao, W. Yi, Y. Liu, J. Zhang and P. Zhang, "DRL Enabled Coverage and Capacity Optimization in STAR-RIS-assisted Networks", IEEE Transactions on Communications, vol. 71, no. 11, pp. 6616-6632, Nov. 2023. [Arxiv]
    113. J. Xu, J. Zuo, J. T. Zhou and Y. Liu, "Active Simultaneously Transmitting and Reflecting (STAR)-RISs: Modelling and Analysis", IEEE Communications Letters, vol. 27, no. 9, pp. 2466-2470, Sept. 2023. [Arxiv]
    114. Z.Wang, X. Mu, J. Xu, Y. Liu, "Simultaneously Transmitting and Reflecting Surface (STARS) for Terahertz Communications", IEEE Journal of Selected Topics in Signal Processing, vol. 17, no. 4, pp. 861-877, July 2023. [Arxiv]
    115. S. Lv, Y. Liu, X. Xu and A. Nallanathan, "Security Enhancement for STARS with An Untrusted User", IEEE Wireless Communications Letters, vol. 12, no. 9, pp. 1489-1493, Sept. 2023.
    116. Z. Zhang, Z. Wang, Y. Liu, B. He, L. Lv and J. Chen, "Security Enhancement for Coupled Phase-Shift STAR-RIS Networks", IEEE Transactions on Vehicular Technology, vol. 72, no. 6, pp. 8210-8215, June 2023. [Arxiv]
    117. Q. Gao, Y. Liu, X. Mu, M. Jia, D. Li and L. Hanzo, "Joint Location and Beamforming Design for STAR-RIS Assisted NOMA Systems" IEEE Transactions on Communications, vol. 71, no. 4, pp. 2532-2546, April 2023. [Arxiv]
    118. R. Zhong, X. Mu, Y. Liu, Y. Chen, J. Zhang and P. Zhang, "STAR-RISs Assisted NOMA Networks: A Distributed Learning Approach", IEEE Journal of Selected Topics in Signal Processing, vol. 17, no. 1, pp. 264-278, Jan. 2023.
    119. Z. Wang, X. Mu, Y. Liu and R. Schober, "Coupled Phase-Shift STAR-RISs: A General Optimization Framework", IEEE Wireless Communications Letters, vol. 12, no. 2, pp. 207-211, Feb. 2023. [Arxiv]
    120. X. Zhai, G. Han, Y. Cai, Y. Liu and L. Hanzo, "Simultaneously Transmitting and Reflecting (STAR) RIS Assisted Over-the-Air Computation Systems", IEEE Transactions on Communications, vol. 71, no. 3, pp. 1309-1322, March 2023. [Arxiv]
    121. J. Xu, X. Mu, J. T. Zhou and Y. Liu, "Simultaneously Transmitting and Reflecting (STAR)-RISs: Are They Applicable to Dual-Sided Incidence?", IEEE Wireless Communications Letters, vol. 12, no. 1, pp. 129-133, Jan. 2023. [Arxiv]
    122. J. Zuo, Y. Liu, Z. Ding, L. Song, and H. V. Poor, "Joint Design for Simultaneously Transmitting And Reflecting (STAR) RIS Assisted NOMA Systems", IEEE Transactions on Wireless Communications, vol. 22, no. 1, pp. 611-626, Jan. 2023. [Arxiv] (Web of Science Highly Cited Paper)
    123. X. Yue, J. Xie, Y. Liu, Z. Han, R. Liu and Z. Ding, "Simultaneously Transmitting and Reflecting Reconfigurable Intelligent Surface Assisted NOMA Networks", IEEE Transactions on Wireless Communications, vol. 22, no. 1, pp. 189-204, Jan. 2023. [Arxiv] (Web of Science Highly Cited Paper)

      124. 2022

    124. S. Zeng, Y. Liu, et al., "Intelligent Omni-Surfaces: Reflection-Refraction Circuit Model, Full-Dimensional Beamforming, and System Implementation", IEEE Transactions on Communications, vol. 70, no. 11, pp. 7711-7727, Nov. 2022. [Arxiv]
    125. J. Zhao, Y. Zhu, X. Mu, K. Cai, Y. Liu and L. Hanzo, "Simultaneously Transmitting and Reflecting Reconfigurable Intelligent Surface (STAR-RIS) Assisted UAV Communications", IEEE Journal on Selected Areas in Communications, vol. 40, no. 10, pp. 3041-3056, Oct. 2022. [Arxiv]
    126. R. Zhong, Y. Liu, X. Mu, Y. Chen, X. Wang and L. Hanzo, "Hybrid Reinforcement Learning for STAR-RISs: A Coupled Phase-Shift Model Based Beamformer", IEEE Journal on Selected Areas in Communications, vol. 40, no. 9, pp. 2556-2569, Sept. 2022. [Arxiv]
    127. Z. Zhang, J. Chen, Y. Liu, Q. Wu, B. He and L. Yang, "On the Secrecy Design of STAR-RIS Assisted Uplink NOMA Networks", IEEE Transactions on Wireless Communications, vol. 21, no. 12, pp. 11207-11221, Dec. 2022. [Arxiv]
    128. H. Liu, G. Li, X. Li, Y. Liu, G. Huang and Z. Ding, "Effective Capacity Analysis of STAR-RIS-Assisted NOMA Networks", IEEE Wireless Communications Letters, vol. 11, no. 9, pp. 1930-1934, Sept. 2022.
    129. W. Ni, Y. Liu, Y. C. Eldar, Z. Yang and H. Tian, "STAR-RIS Integrated Non-Orthogonal Multiple Access and Over-the-Air Federated Learning: Framework, Analysis, and Optimization", IEEE Internet of Things Journal, vol. 9, no. 18, pp. 17136-17156, Sept. 2022. [Arxiv]
    130. B. Zhao, C. Zhang, W. Yi and Y. Liu, "Ergodic Rate Analysis of STAR-RIS Aided NOMA Systems", IEEE Communications Letters; vol. 26, no. 10, pp. 2297-2301, Oct. 2022. [Arxiv]
    131. Z. Xie, W. Yi, X. Wu, Y. Liu, and A. Nallanathan, "STAR-RIS Aided NOMA in Multi-Cell Networks: A General Analytical Framework with Gamma Distributed Channel Modeling", IEEE Transactions on Communications; vol. 70, no. 8, pp. 5629-5644, Aug. 2022. [Arxiv]
    132. C. Wu, C. You, Y. Liu, X. Gu, and Y. Cai, "Channel Estimation for STAR-RIS-aided Wireless Communication", IEEE Communication Letters; vol. 26, no. 3, pp. 652-656, March 2022. [Arxiv]
    133. J. Xu, Y. Liu, X. Mu, R. Schober, and H. V. Poor, "STAR-RISs: A Correlated T&R Phase-Shift Model and Practical Phase-Shift Configuration Strategies", IEEE Journal of Selected Topics in Signal Processing, vol. 16, no. 5, pp. 1097-1111, Aug. 2022. [Arxiv]
    134. C. Wu, X. Mu, Y. Liu, X. Gu, and X. Wang, "Resource Allocation in STAR-RIS-Aided Networks: OMA and NOMA", IEEE Transactions on Wireless Communications, vol. 21, no. 9, pp. 7653-7667, Sept. 2022. [Arxiv]
    135. J. Xu, Y. Liu, X. Mu, J. T. Zhou, L. Song, H. V. Poor, and L. Hanzo, "Simultaneously Transmitting and Reflecting Intelligent Omni-Surfaces: Modeling and Implementation", IEEE Vehicular Technology Magazine, vol. 17, no. 2, pp. 46-54, June 2022. [Arxiv]
    136. C. Zhang, W. Yi, Y. Liu, Z. Ding, and L. Song, "STAR-IOS Aided NOMA Networks: Channel Model Approximation and Performance Analysis", IEEE Transactions on Wireless Communications; vol. 21, no. 9, pp. 6861-6876, Sept. 2022. [Arxiv]
    137. X. Mu, Y. Liu, L. Guo, J. Lin, and R. Schober, “Simultaneously Transmitting And Reflecting (STAR) RIS Aided Wireless Communications”, IEEE Transactions on Wireless Communications; vol. 21, no. 5, pp. 3083-3098, May 2022. [Arxiv] (Web of Science Highly Cited Paper)

      138. 2021

    138. Y. Liu, J. Xu, R. Schober, Y. Hao, H.V. Poor and L. Hanzo, ``STAR: Simultaneous Transmission And Reflection for 360° Coverage by Intelligent Surfaces'', IEEE Wireless Communications; vol. 28, no. 6, pp. 102-109, December 2021. [Arxiv] (Web of Science Highly Cited Paper)
    139. J. Xu, Y. Liu, X. Mu, and O. A. Dobre "STAR-RISs: Simultaneous Transmitting and Reflecting Reconfigurable Intelligent Surfaces", IEEE Communications Letters; vol. 25, no. 9, pp. 3036-3040, Sept. 2021. [Arxiv] (Web of Science Highly Cited Paper)
    140. C. Wu, Y. Liu, X. Mu, X. Gu and O. A. Dobre "Coverage Characterization of STAR-RIS Networks: NOMA and OMA", IEEE Communications Letters; vol. 25, no. 9, pp. 3134-3138, Sept. 2021. [Arxiv]

      141. Reconfigurable Intelligent Surface (RIS) Aided Wireless Communications

      2024

    141. E. Basar, G. C. Alexandropoulos, Y. Liu et al "Reconfigurable Intelligent Surfaces for 6G: Emerging Hardware Architectures, Applications, and Open Challenges", IEEE Vehicular Technology Magazine , Early Access, 2024.
    142. H. Zhou, M. Erol-Kantarci, Y. Liu and H. V. Poor, "Heuristic Algorithms for RIS-Assisted Wireless Networks: Exploring Heuristic-Aided Machine Learning", IEEE Wireless Communications , vol. 31, no. 4, pp. 106-114, August 2024. [Arxiv]
    143. C. Zhang, W. Yi, Y. Liu, Z. Ma and X. Zhang, "NOMA for Multi-Cell RIS Networks: A Stochastic Geometry Model", IEEE Transactions on Wireless Communications, vol. 23, no. 8, pp. 10398-10413, Aug. 2024. [Arxiv]

      144. 2023

    144. Y. Zou, Y. Liu, X. Mu, X. Zhang, Y. Liu and C. Yuen, "Machine Learning in RIS-assisted NOMA IoT Networks", IEEE Internet of Things Journal, vol. 10, no. 22, pp. 19427-19440, 15 Nov.15, 2023.
    145. X. Gao, X. Mu, W. Yi and Y. Liu, "Intelligent Trajectory Design for RIS-NOMA aided Multi-robot Communications", IEEE Transactions on Wireless Communications, vol. 22, no. 11, pp. 7648-7662, Nov. 2023. [Arxiv]
    146. A. Huang, L. Guo, X. Mu, C. Dong and Y. Liu, "Coexisting Passive RIS and Active Relay Assisted NOMA Systems", IEEE Transactions on Wireless Communications, vol. 22, no. 3, pp. 1948-1963, March 2023.

      147. 2022

    147. R. Zhong, X. Liu, Y. Liu, Y. Chen, and Z. Han, "Mobile Reconfigurable Intelligent Surfaces for NOMA Networks: Federated Learning Approaches", IEEE Transactions on Wireless Communications; vol. 21, no. 11, pp. 10020-10034, Nov. 2022. [Arxiv]
    148. W. Ni, Y. Liu, Z. Yang, H. Tian and X. Shen, "Integrating Over-the-Air Federated Learning and Non-Orthogonal Multiple Access: What Roles Can RIS Play?", IEEE Transactions on Wireless Communications; vol. 21, no. 12, pp. 10083-10099, Dec. 2022. [Arxiv]
    149. Z. Xie, W. Yi, X. Wu, Y. Liu, and A. Nallanathan, “Downlink Multi-RIS Aided Transmission in Backhaul Limited Networks”, IEEE Wireless Communications Letters; vol. 11, no. 7, pp. 1458-1462, July 2022.
    150. Z. Tang, T. Hou, Y. Liu, J. Zhang and L. Hanzo, "Physical Layer Security of Intelligent Reflective Surface Aided NOMA Networks", IEEE Transactions on Vehicular Technology; vol. 71, no. 7, pp. 7821-7834, July 2022. [Arxiv]
    151. Y. Liu, X. Mu, X. Liu, M. Di Renzo, Z. Ding, and R. Schober,“Reconfigurable Intelligent Surface (RIS) Aided Multi-User Networks: Interplay Between NOMA and RIS ”, IEEE Wireless Communications; vol. 29, no. 2, pp. 169-176, April 2022.[Arxiv]
    152. X. Yue and Y. Liu, "Performance Analysis of Intelligent Reflecting Surface Assisted NOMA Networks", IEEE Transactions on Wireless Communications; vol. 21, no. 4, pp. 2623-2636, April 2022.[Arxiv] (Web of Science Highly Cited Paper)
    153. X. Gao, Y. Liu, X. Liu and L. Song “Machine Learning Empowered Resource Allocation in IRS Aided MISO-NOMA Networks”, IEEE Transactions on Wireless Communications; vol. 21, no. 5, pp. 3478-3492, May 2022.[Arxiv]
    154. C. Zhang, W. Yi, Y. Liu, K. Yang, and Z. Ding “Reconfigurable Intelligent Surfaces Aided Multi-Cell NOMA Networks: A Stochastic Geometry Model”, IEEE Transactions on Communications; vol. 70, no. 2, pp. 951-966, Feb. 2022. [Arxiv]
    155. J. Xu and Y. Liu ``A Novel Physics-based Channel Model for Reconfigurable Intelligent Surface-assisted Multi-user Communication Systems'', IEEE Transactions on Wireless Communications; vol. 21, no. 2, pp. 1183-1196, Feb. 2022. [Arxiv]
    156. R. Zhong, Y. Liu, X. Mu, Y. Chen, and L. Song “AI Empowered RIS-Assisted NOMA Networks: Deep Learning or Reinforcement Learning?”, IEEE Journal on Selected Areas in Communications (JSAC); vol. 40, no. 1, pp. 182-196, Jan. 2022.

      157. 2021

    157. Y. Liu, X. Liu, X. Mu, T. Hou, J. Xu, M. Di Renzo, and N. Al-Dhahir, "Reconfigurable Intelligent Surfaces: Principles and Opportunities", IEEE Communications Surveys and Tutorials; vol. 23, no. 3, pp. 1546-1577, thirdquarter 2021. [Arxiv] (Web of Science Highly Cited Paper, Web of Science Hot Paper)
    158. Y. Cheng, K. H. Li, Y. Liu, K. C. Teh and G. K. Karagiannidis, ``Non-Orthogonal Multiple Access (NOMA) with Multiple Intelligent Reflecting Surfaces'', IEEE Transactions on Wireless Communications; vol. 20, no. 11, pp. 7184-7195, Nov. 2021. [Arxiv]
    159. Z. Yang, Y. Liu, Y. Chen, and N. Al-Dhahir ``Machine Learning for User Partitioning and Phase Shifters Design in RIS-Aided NOMA Networks '', IEEE Transactions on Communications; vol. 69, no. 11, pp. 7414-7428, Nov. 2021. [Arxiv]
    160. Z. Tang, T. Hou, Y. Liu, J. Zhang, and C. Zhong ``A Novel Design of RIS for Enhancing the Physical Layer Security of RIS-aided NOMA Network'', IEEE Wireless Communications Letters; vol. 10, no. 11, pp. 2398-2401, Nov. 2021.
    161. X. Mu, Y. Liu, L. Guo, J. Lin and H. V. Poor, ``Intelligent Reflecting Surface Enhanced Multi-UAV NOMA Networks'', IEEE Journal on Selected Areas in Communications (JSAC); vol. 39, no. 10, pp. 3051-3066, Oct. 2021, [Arxiv]
    162. J. Zuo, Y. Liu, and N. Al-Dhahir ``Reconfigurable Intelligent Surface Assisted Cooperative Non-orthogonal Multiple Access Systems'', IEEE Transactions on Communications; vol. 69, no. 10, pp. 6750-6764, Oct. 2021. [Arxiv]
    163. X. Mu, Y. Liu, L. Guo, J. Lin and R. Schober, ``Joint Deployment and Multiple Access Design for Intelligent Reflecting Surface Assisted Networks'', IEEE Transactions on Wireless Communications; vol. 20, no. 10, pp. 6648-6664, Oct. 2021. [Arxiv]
    164. X. Liu, Y. Liu, and Y. Chen ``Machine Learning Empowered Trajectory and Passive Beamforming Design in UAV-RIS Wireless Networks'', IEEE Journal on Selected Areas in Communications; vol. 39, no. 7, pp. 2042-2055, July 2021, [Arxiv]. (Web of Science Highly Cited Paper)
    165. X. Mu, Y. Liu, L. Guo, J. Lin and R. Schober, ``Intelligent Reflecting Surface Enhanced Indoor Robot Path Planning: A Radio Map based Approach'', IEEE Transactions on Wireless Communications; vol. 20, no. 7, pp. 4732-4747, July 2021, [Arxiv]
    166. W. Ni, X. Liu, Y. Liu, H. Tian, and Y. Chen, ``Resource Allocation for Multi-Cell IRS-Aided NOMA Networks'', IEEE Transactions on Wireless Communications; vol. 20, no. 7, pp. 4253-4268, July 2021 [Arxiv]
    167. Y. Cheng, K. H. Li, Y. Liu, K. C. Chan, and H. V. Poor, ``Downlink and Uplink Intelligent Reflecting Surface Aided Networks: NOMA and OMA'', IEEE Transactions on Wireless Communications; vol. 20, no. 6, pp. 3988-4000, June 2021 [Arxiv]
    168. X. Mu, Y. Liu, L. Guo, J. Lin and N. Al-Dhahir, ``Capacity and Optimal Resource Allocation for IRS-assisted Multi-user Communication Systems'' , IEEE Transactions on Communications; vol. 69, no. 6, pp. 3771-3786, June 2021, [Arxiv]
    169. X. Liu, Y. Liu, Y. Chen, and H. V. Poor, ``RIS Enhanced Massive Non-orthogonal Multiple Access Networks: Deployment and Passive Beamforming Design'', IEEE Journal on Selected Areas in Communications; vol. 39, no. 4, pp. 1057-1071, April 2021, [Arxiv], included in [IEEE Best Readings] on RIS. (Web of Science Highly Cited Paper)
    170. J. Zuo Y. Liu, L. Yang, L. Song, and Y-C Liang, ``Reconfigurable Intelligent Surface Enhanced NOMA Assisted Backscatter Communication System'', IEEE Transactions on Vehicular Technology; vol. 70, no. 7, pp. 7261-7266, July 2021. [Arxiv]
    171. Y. Guo, Z. Qin, Y. Liu, and N. Al-Dhahir, ``Intelligent Reflecting Surface Aided Multiple Access Over Fading Channels'', IEEE Transactions on Communications; vol. 69, no. 3, pp. 2015-2027, March 2021, [Arxiv]

      172. 2020

    172. T. Hou, Y. Liu, Z. Song, X. Sun, Y. Chen and L. Hanzo, ``Reconfigurable Intelligent Surface Aided NOMA Networks'', IEEE Journal on Selected Areas in Communications; vol. 38, no. 11, pp. 2575-2588, Nov. 2020, [Arxiv] (Web of Science Highly Cited Paper, included in[IEEE Best Readings] on RIS.)
    173. T. Hou, Y. Liu, Z. Song, X. Sun, Y. Chen, ``MIMO-NOMA Networks Relying on Reconfigurable Intelligent Surface: A Signal Cancellation Based Design'', IEEE Transactions on Communications; vol. 68, no. 11, pp. 6932-6944, Nov. 2020. [Arxiv]
    174. J. Zuo, Y. Liu, Z. Qin, and N. Al-Dhahir, ``Resource Allocation in Intelligent Reflecting Surface Assisted NOMA Systems'', IEEE Transactions on Communications; vol. 68, no. 11, pp. 7170-7183, Nov. 2020, [Arxiv], included in [IEEE Best Readings] on RIS.
    175. J. Zuo, Y. Liu, E. Basar, and O. Dobre, ``Intelligent Reflecting Surface Enhanced Millimeter-Wave NOMA Systems'', IEEE Communications Letters; , vol. 24, no. 11, pp. 2632-2636, Nov. 2020, included in [Arxiv] [IEEE Best Readings] on RIS.
    176. X. Mu, Y. Liu, L. Guo, J. Lin, and N. Al-Dhahir, ``Exploiting Intelligent Reflecting Surfaces in NOMA Networks: Joint Beamforming Optimization'', IEEE Transactions on Wireless Communications; vol. 19, no. 10, pp. 6884-6898, Oct. 2020, [Arxiv] (Web of Science Highly Cited Paper, included in [IEEE Best Readings] on RIS.)

      177. Machine Learning in Wireless Communications: NOMA, UAV Communications, and MEC/Caching

      2023

    177. X. Gao, W. Yi, Y. Liu, and L. Hanzo, "Multi-Objective Optimisation of URLLC-Based Metaverse Services", IEEE Transactions on Communications, vol. 71, no. 11, pp. 6745-6761, Nov. 2023. [Arxiv]

      178. 2022

    178. Z. Yang, Y. Fu, Y. Liu, Y. Chen, and J. Zhang, "A New Look at AI-Driven NOMA-F-RANs: Features Extraction, Cooperative Caching, and Cache-Aided Computing", IEEE Wireless Communications, vol. 29, no. 3, pp. 123-130, June 2022. [Arxiv]
    179. R. Zhong, X. Liu, Y. Liu, Y. Chen and X. Wang, "Path Design and Resource Management for NOMA enhanced Indoor Intelligent Robots", IEEE Transactions on Wireless Communications, vol. 21, no. 10, pp. 8007-8021, Oct. 2022. [Arxiv]
    180. R. Zhong, X. Liu, Y. Liu, and Y. Chen "Multi-Agent Reinforcement Learning in NOMA-aided UAV Networks for Cellular Offloading", IEEE Transactions on Wireless Communications, vol. 21, no. 3, pp. 1498-1512, March 2022. [Arxiv]
    181. X. Xu, Q. Chen, X. Mu, Y. Liu, and H. Jiang, "Graph-Embedded Multi-Agent Learning for Smart Reconfigurable THz MIMO-NOMA Networks", IEEE Journal on Selected Areas in Communications (JSAC); vol. 40, no. 1, pp. 259-275, Jan. 2022.[Arxiv]
    182. Z. Yang, Y. Liu, Y. Chen, and T. Zhou, "Deep Learning for Latent Events Forecasting in NOMA-enabled Content Caching Networks", IEEE Transactions on Wireless Communications, vol. 21, no. 1, pp. 413-428, Jan. 2022. [Arxiv]

      183. 2021

    183. M. Fayaz, W. Yi, Y. Liu, and A. Nallanathan "Transmit Power Pool Design for Grant-Free NOMA-IoT Networks via Deep Reinforcement Learning"", IEEE Transactions on Wireless Communications, vol. 20, no. 11, pp. 7626-7641, Nov. 2021. [Arxiv]
    184. Z. Yang, M. Chen, X. Liu, Y. Liu, Y. Chen, S. Cui, and H. V. Poor "Artificial Intelligence Driven UAV-NOMA-MEC in Next Generation Wireless Networks", IEEE Wireless Communications; vol. 28, no. 5, pp. 66-73, October 2021, [Arxiv]
    185. Y. Liu, X. Liu, X. Gao, X. Mu, X. Zhou, O. Dobre, and H.V. Poor, "Robotic Communications for 5G and Beyond: Challenges and Research Opportunities", IEEE Communications Magazine, vol. 59, no. 10, pp. 92-98, October 2021. [Arxiv]
    186. W. Yi, Y. Liu and A. Nallanathan, ``Signal Fractions Analysis and Safety-Distance Modeling in V2V Inter-lane Communications'', IEEE Communications Letters; vol. 25, no. 4, pp. 1387-1390, April 2021.
    187. X. Liu, M. Chen, Y. Liu, Y. Chen, S. Cui and L. Hanzo, ``Artificial Intelligence Aided Next-Generation Networks Relying on UAVs'', IEEE Wireless Communications; vol. 28, no. 1, pp. 120-127, February 2021. [Arxiv]

      188. 2020

    188. X. Liu, Y. Liu, Y. Chen, and L. Hanzo, ``Enhancing the Fuel-Economy of V2I-Assisted Autonomous Driving: A Reinforcement Learning Approach'', IEEE Transactions on Vehicular Technology; vol. 69, no. 8, pp. 8329-8342, Aug. 2020.
    189. W. Yi, Y. Liu, Y. Deng, and A. Nallanathan, ``Clustered UAV Networks with Millimeter Wave Communications: A Stochastic Geometry View'', IEEE Transactions on Communications; vol. 68, no. 7, pp. 4342-4357, July 2020.
    190. Z. Yang, Y. Liu, Y. Chen, and L. Jiao, ``Learning Automata Based Q-learning for Content Placement in Cooperative Caching'', IEEE Transactions on Communications; vol. 68, no. 6, pp. 3667-3680, June 2020. [Arxiv]
    191. Y. Liu, S. Bi, Z. Shi, and L. Hanzo, ``When Machine Learning Meets Big Data: A Wireless Communication Perspective''IEEE Vehicular Communication Magazine; vol. 15, no. 1, pp. 63-72, March 2020. [Arxiv]
    192. J. Cui, Y. Liu, A. Nallanathan, ``Multi-Agent Reinforcement Learning Based Resource Allocation for UAV Networks'', IEEE Transactions on Wireless Communications; vol. 19, no. 2, pp. 729-743, Feb. 2020. [Arxiv] (Web of Science Highly Cited Paper)

      193. 2019

    193. W. Yi, Y. Liu, E. Bodanese, A. Nallanathan, and G. K. Karagiannidis, ``A Unified Spatial Framework for UAV-aided MmWave Networks", IEEE Transactions on Communications; vol. 67, no. 12, pp. 8801-8817, Dec. 2019. [Arxiv]
    194. X. Liu, Y. Liu, Y. Chen, and L. Hanzo, "Trajectory Design and Power Control for Multi-UAV Assisted Wireless Networks: A Machine Learning Approach", IEEE Transactions on Vehicular Technology; vol. 68, no. 8, pp. 7957-7969, Aug. 2019. [Arxiv]
    195. X. Liu, Y. Liu, and Y. Chen, ``Reinforcement Learning in Multiple-UAV Networks: Deployment and Movement Design'', IEEE Transactions on Vehicular Technology; vol. 68, no. 8, pp. 8036-8049, Aug. 2019. [Arxiv]

      196. Energy Harvesting

      2017

    196. Z. Qin, Y. Liu, Y. Gao, M. Elkashlan, and A. Nallanathan, "Wireless Powered Cognitive Radio Networks with Compressive Sensing and Matrix Completion", IEEE Transactions on Communications; vol. 65, no. 4, pp. 1464-1476, Apr. 2017. [Arxiv]

      197. 2016

    197. Y. Liu, S. A. Mousavifar, Y. Deng, C. Leung, and M. Elkashlan, "Wireless Energy Harvesting in a Cognitive Relay Network" , IEEE Transactions on Wireless Communications, vol. 15, no. 4, pp. 2498-2508, April 2016. [Arxiv]
    198. Y. Liu, L. Wang, S. A. R. Zaidi, M. Elkashlan, and T. Q. Duong, "Secure D2D Communication in Large-scale Cognitive Cellular Networks: A Wireless Power Transfer Model", IEEE Transactions on Communications; vol. 64, no. 1, pp. 329-342, Jan. 2016. [PDF]

      199. Millimeter Wave Communications

      2019

    199. W. Yi, Y. Liu, Y. Deng, A. Nallanathan and R. Heath, ``Modeling and Analysis of MmWave V2X Networks With Vehicular Platoon Systems'', IEEE Journal on Selected Areas in Communications; vol. 37, no. 12, pp. 2851-2866, Dec. 2019.

      200. 2018

    200. W. Yi, Y. Liu, and A. Nallanathan, "Cache-enabled HetNets with Millimeter Wave Small Cells", IEEE Transactions on Communications; vol. 66, no. 11, pp. 5497-5511, Nov. 2018. [PDF]

      201. 2017

    201. W. Yi, Y. Liu, and A. Nallanathan, "Modeling and Analysis of D2D Millimeter-Wave Networks with Poisson Cluster Processes'', IEEE Transactions on Communications; vol. 65, no. 12, Dec. 2017. [PDF]

      202. IoT and Other Reserach Topics

      2021

    202. X. Li, M. Huang, Y. Liu, V. G. Menon, A. Paul and Z. Ding, I/Q Imbalance Aware Nonlinear Wireless-Powered Relaying of B5G Networks: Security and Reliability Analysis," IEEE Transactions on Network Science and Engineering, vol. 8, no. 4, pp. 2995-3008, Dec. 2021. (Web of Science Highly Cited Paper）

      203. 2019

    203. Z. Qin, Y. Liu, Geoffrey Y. Li, and J. A. McCann, "Performance Analysis of Clustered Low-Power Wide-Area Networks'', IEEE Transactions on Vehicular Technology; vol. 68, no. 8, pp. 7616-7629, Aug. 2019. [Arxiv]

      204. 2018

    204. Z. Qin, J. Fan, Y. Liu, Y. Gao and G. Y. Li, "Sparse Representation with Applications in Wireless Communications'', IEEE Signal Processing Magazine; vol. 35, no. 3, pp. 40-58, May 2018. [Arxiv] (Top 5 most popular article on IEEE SPM)

      205. 2017

    205. J. Zhao, Y. Liu, K. K. Chai, M. Elkashlan, and Y. Chen, "Matching with Peer Effects for Context-Aware Resource Allocation in D2D Communications", IEEE Communications Letters; vol. 21, no. 4, pp. 837-840, Apr. 2017. [PDF]
    206. J. Zhao, Y. Liu, K. K. Chai, Y. Chen, and M. Elkashlan, "Many-to-Many Matching with Externalities for Device-to-Device Communications", IEEE Wireless Communications Letters; vol. 6, no. 1, pp. 138-141, Feb. 2017. [PDF]

      207. 2015

    207. Y. Liu, L. Wang, T. T. Duy, M. Elkashlan, and T. Q. Duong, "Relay Selection for Security Enhancement in Cognitive Relay Networks", IEEE Wireless Communications Letters; vol. 4, no. 1, pp. 46-49, Feb. 2015. [PDF] ( Top 15 most popular article on WCL)

      208. Selected Conference Publications

      See a full list of publications on [Google Scholar].

        2024


      1. Z. Wang, X. Mu, and Y. Liu, "Performance Bounds of Near-Field Sensing With Circular Arrays", in Proc. IEEE Global Communications Conf. (GLOBECOM'24), Cape Town, South Africa, December 2024.
      2. H. Ting, Z. Wang, and Y. Liu, "A Model Segmentation Method for Personalized Mobile Edge Generation", in Proc. IEEE Global Communications Conf. (GLOBECOM'24), Cape Town, South Africa, December 2024.
      3. H. Jiang, Z. Wang, Y. Zou, Y. Liu, and Z. Ding, "Near-field Sensing (NISE)-Enabled User Tracking via Deep Unfolding Neural Network", in Proc. IEEE Global Communications Conf. (GLOBECOM'24), Cape Town, South Africa, December 2024.
      4. B. Zhao, C. Ouyang, X. Zhang, and Y. Liu, "Capacity Limits of Near-Field Multiple Access Channel", in Proc. IEEE Global Communications Conf. (GLOBECOM'24), Cape Town, South Africa, December 2024.
      5. C. Ouyang, X. Zhang, and Y. Liu, "On the Performance of Continuous Aperture Array (CAPA)-Based Wireless Communications", in Proc. IEEE Global Communications Conf. (GLOBECOM'24), Cape Town, South Africa, December 2024.
      6. C. Ouyang, Y. Liu, and X. Zhang, "Aperture Selection for CAP Arrays (CAPAs)", in Proc. IEEE Global Communications Conf. (GLOBECOM'24), Cape Town, South Africa, December 2024.
      7. Y. Guo, Y. Zhang, Z. Wang, Y. Liu, and Z. Ding, "Energy-Efficient Near-Field Wideband Beamforming with Circular Arrays", in Proc. IEEE Global Communications Conf. (GLOBECOM'24), Cape Town, South Africa, December 2024.
      8. R. Zhong, X. Mu, M. Jaber, and Y. Liu, "A Mobile Edge Generation Approach", in Proc. IEEE Global Communications Conf. (GLOBECOM'24), Cape Town, South Africa, December 2024.
      9. Q. Gao, R. Zhong, and Y. Liu, "Trajectory and Beamforming Optimization in UAV-enabled ISAC System", in Proc. IEEE Global Communications Conf. (GLOBECOM'24), Cape Town, South Africa, December 2024.
      10. Q. Gao, R. Zhong, and Y. Liu, "Antenna Selection and Beamforming in ELAA-based ISAC System: A Distributed Approach", in Proc. IEEE Global Communications Conf. (GLOBECOM'24), Cape Town, South Africa, December 2024.
      11. Z. Zhang, Y. Liu, Z. Wang, and J. Chen, "Dynamic Metasurface Antenna-Enabled Near-Field NOMA Communications", in Proc. IEEE Global Communications Conf. (GLOBECOM'24), Cape Town, South Africa, December 2024.
      12. R. Zhang, Z. Wang, Z. Wei, Y. Liu, Z. Xiong, and Z. Feng, "ISAR OFDM Based Integrated Sensing and Communications for Extended Targets", in Proc. IEEE Global Communications Conf. (GLOBECOM'24), Cape Town, South Africa, December 2024.
      13. H. Li, X. Mu, Y. Liu, and Y. Chen, "Joint Beamforming Design for STAR-RIS Aided Cognitive Radio Systems", in Proc. IEEE Global Communications Conf. (GLOBECOM'24), Cape Town, South Africa, December 2024.
      14. Z. Gao, Z. Rong, X. Mu, J. Liu, and Y. Liu, "Beamforming Based on DRL for STAR-RIS Aided Cell-Free Massive MIMO Network", in Proc. IEEE Global Communications Conf. (GLOBECOM'24), Cape Town, South Africa, December 2024.
      15. N. Xue, X. Mu, Y. Chen, and Y. Liu, "Near-field ISAC for A RIS-assisted System", in Proc. IEEE Global Communications Conf. (GLOBECOM'24), Cape Town, South Africa, December 2024.
      16. Q. Gao, Y. Hao and Y. Liu, “AutoSen: Improving Automatic WiFi Human Sensing through Cross-Modal Autoencoder”, in Proc. IEEE Int. Conf. Acoust. Speech Signal Process. (ICASSP'24), Seoul, Korea, April 2024.
      17. X. Mu, and Y. Liu, “Semantic Communication-assisted Physical Layer Security over Fading Wiretap Channels”, in Proc. IEEE Int. Communications Conf. (ICC'24), Denver, USA, June 2024.
      18. Z. Wang, X. Mu, Y. Zou, and Y. Liu, “Near-Field Wideband Beamforming Design with Short-Range True-Time Delayers”, in Proc. IEEE Int. Communications Conf. (ICC'24), Denver, USA, June 2024.
      19. H. Jiang, Z. Wang, and Y. Liu, “Active-Sensing-Based Beam Alignment for Near Field MIMO Communications”, in Proc. IEEE Int. Communications Conf. (ICC'24), Denver, USA, June 2024.
      20. M. Zhang, R. Zhong, X. Mu, and Y. Liu, “AI-Empowered Beam Tracking for Near-Field Communications”, in Proc. IEEE Int. Communications Conf. (ICC'24), Denver, USA, June 2024.
      21. Z. Zhang, Y. Liu, Z. Wang, X. Mu, and J. Chen, “Hybrid Beamforming Design for Near-Field SWIPT Networks”, in Proc. IEEE Int. Communications Conf. (ICC'24), Denver, USA, June 2024.
      22. H. Li, Z. Wang, X. Mu, Y. Liu, Y. Chen, Z. Pan, “Downlink CRB Minimization for Near-Field Integrated Sensing and Communication”, in Proc. IEEE Int. Communications Conf. (ICC'24), Denver, USA, June 2024.
      23. B. Zhao, C. Ouyang, X. Zhang, and, Y. Liu, “A Cluster-Based NOMA Framework for Integrated Sensing and Communications”, in Proc. IEEE Int. Communications Conf. (ICC'24), Denver, USA, June 2024.
      24. B. Zhao, C. Ouyang, X. Zhang, and, Y. Liu, “Performance Analysis of Near-Field ISAC Based on an Accurate Channel Model”, in Proc. IEEE Int. Communications Conf. (ICC'24), Denver, USA, June 2024.
      25. C. Ouyang, A. Bereyhi, S. Asaad, Y. Liu, X. Zhang, and, R. Müller, “Joint Receive Antenna Selection and Beamforming in RIS-Aided MIMO Systems”, in Proc. IEEE Int. Communications Conf. (ICC'24), Denver, USA, June 2024.
      26. Y. Zhang, R. Zhong, Y. Liu, W. Xu, and P. Zhang, “Non-orthogonal Multiple Access for Semantic Communications”, in Proc. IEEE Int. Communications Conf. (ICC'24), Denver, USA, June 2024.
      27. T. Shi, T. Zhang, R. Zhong, Y. Liu, and R. Huang, “Inter-user Dependent Task Offloading and Resource Allocation in Dynamic MEC Networks”, in Proc. IEEE Int. Communications Conf. (ICC'24), Denver, USA, June 2024.
      28. R. Zhong, X. Mu, Y. Chen, and Y. Liu, "Exploiting Multi-user Semantic Communications: A Non-orthogonal Approach", in Proc. IEEE Wireless Communications and Networking Conference (WCNC'24), Dubai, UAE, April 2024.
      29. B. Zhao, C. Ouyang, X. Zhang, and Y. Liu, "Performance of MIMO-NOMA-ISAC Based on Signal Alignment", in Proc. IEEE Wireless Communications and Networking Conference (WCNC'24), Dubai, UAE, April 2024.

        30. 2023


      30. Z. Wang, X. Mu, J. Xu, Y. Zou, and Y. Liu, "STARS for Spectral Efficiency in Wideband Terahertz Communications", in Proc. IEEE Global Communications Conf. (GLOBECOM'23), Kuala Lumpur, Malaysia, December 2023.
      31. Z. Xie, Y. Liu, W. Yi, X. Wu, and A. Nallanathan, "Secrecy Performance Analysis in STAR-RIS-Aided NOMA Networks", in Proc. IEEE Global Communications Conf. (GLOBECOM'23), Kuala Lumpur, Malaysia, December 2023.
      32. Z. Xie, W. Yi, X. Wu, Y. Liu, and A. Nallanathan, "Exploiting Index Modulation for Enhanced NOMA", in Proc. IEEE Global Communications Conf. (GLOBECOM'23), Kuala Lumpur, Malaysia, December 2023.
      33. Z. Hu, R. Zhong, C. Fang, and Y. Liu, "Exploiting Caching-at-STARS: Joint caching replacement and hybrid beamforming", in Proc. IEEE Global Communications Conf. (GLOBECOM'23), Kuala Lumpur, Malaysia, December 2023.
      34. J. Zuo, X. Mu, and Y. Liu, "Near-Field Non-Orthogonal Multiple Access Communications", in Proc. IEEE Global Communications Conf. (GLOBECOM'23), Kuala Lumpur, Malaysia, December 2023.
      35. Z. Wang, X. Mu, Y. Zou, and Y. Liu, "Near-Field Wideband Beamfocusing Optimization: A Heuristic Two-Stage Approach", in Proc. IEEE Global Communications Conf. (GLOBECOM'23), Kuala Lumpur, Malaysia, December 2023.
      36. Y. Li, J. Wang, Y. Liu, W.Xie, and J. Wang, "Weighted Sum Power Maximization for STAR-RIS Assisted SWIPT Systems", in Proc. IEEE Global Communications Conf. (GLOBECOM'23), Kuala Lumpur, Malaysia, December 2023.
      37. J. Xiao, J. Wang, Y. Liu, W. Xie, J. Wang, and S. Liu, "Multi-Task Learning Based Channel Estimation for Hybrid-Field STAR-RIS Systems", in Proc. IEEE Global Communications Conf. (GLOBECOM'23), Kuala Lumpur, Malaysia, December 2023.
      38. N. Xue, X. Mu, Y. Liu, Y. Chen, and m.khalily, "Simultaneously Transmitting And Reflecting (STAR)-RIS Empowered ISAC with NOMA", in Proc. IEEE Global Communications Conf. (GLOBECOM'23), Kuala Lumpur, Malaysia, December 2023.
      39. H. Li, Y. Liu, X. Mu, Y. Chen, and Z. Pan, "Joint Beamforming for STAR-RIS in Near-Field Communications", in Proc. IEEE Global Communications Conf. (GLOBECOM'23), Kuala Lumpur, Malaysia, December 2023.
      40. C. Ouyang, X. Zhang, and Y. Liu, "Performance Analysis of Downlink NOMA-ISAC", in Proc. IEEE Global Communications Conf. (GLOBECOM'23), Kuala Lumpur, Malaysia, December 2023.
      41. X. Mu and Y. Liu, “Rate Region Characterization for Semantics and Bits Based Multiuser Communications”, (ICASSP’23), Rhodes Island, Greece, June 2023.
      42. Z. Wang, X. Mu, Y. Liu, "Full-Duplex Communication in Bidirectional ISAC", in Proc. IEEE Int. Communications Conf. (ICC'23) Workshop, Rome, Italy, May 2023.
      43. M. Zhang, R. Zhong, X. Mu, Y. Chen, Y. Liu, " Resource Management for Heterogeneous Semantic and Bit Communication Systems", in Proc. IEEE Int. Communications Conf. (ICC'23) Workshop, Rome, Italy, May 2023.
      44. N. X, X. Mu, Y. Liu, Y. Liu, Y. Chen, " Hybrid NOMA Empowered Integrated Sensing and Communications", in Proc. IEEE Int. Communications Conf. (ICC'23) Workshop, Rome, Italy, May 2023.
      45. Y. Zou, Y. Liu, W. Yi, X. Xu, M. Chai, Y. Liu, "Adaptive NGMA Scheme for IoT Networks: A Deep Reinforcement Learning Approach", in Proc. IEEE Int. Communications Conf. (ICC'23), Rome, Italy, May 2023.
      46. X. Mu, Y. Liu, P. Popovski, N. Al-Dhahir, "Opportunistic Semantic and Bit Communications in Uplink NOMA", in Proc. IEEE Int. Communications Conf. (ICC'23), Rome, Italy, May 2023.
      47. Z. Chen, W. Yi, Y. Liu, A. Nallanathan, "Communication-efficient Federated Learning with Heterogeneous Devices", in Proc. IEEE Int. Communications Conf. (ICC'23), Rome, Italy, May 2023.

        48. 2022


      48. X. Mu and Y. Liu, “Semi-NOMA enabled Coexisting Semantic and Bit Communications”, ISWCS 2022, accept to appear. (ISWCS 2022 Best Paper Award)
      49. Z. Wang, X. Mu, Y. Liu, “STARS Enabled Integrated Sensing and Communications: A CRB Optimization Perspective”, VTC2022-Fall, accept to appear. (IEEE VTC2022-Fall Best Student Paper Award)
      50. M. Fayaz, W. Yi, Y. Liu, and A. Nallanathan, "Multi-Agent DRL for Mitigating Power Collisions in SGF-NOMA Systems", in Proc. IEEE Global Communications Conf. (GLOBECOM'22), Rio de Janeiro, Brazil, December 2022.
      51. Z. Wang, X. Mu, Y. Liu, X. Xu, and P. Zhang, "Joint Communication, Sensing, and Multi-tier Computing: A NOMA-aided Framework", in Proc. IEEE Global Communications Conf. (GLOBECOM'22), Rio de Janeiro, Brazil, December 2022.
      52. N. Zhang, Y. Liu, X. Mu, and W. Wang, "Stability-Oriented STAR-RIS Aided MISO-NOMA Communication Systems", in Proc. IEEE Global Communications Conf. (GLOBECOM'22), Rio de Janeiro, Brazil, December 2022.
      53. M. Fayaz, W. Yi, Y. Liu and A. Nallanathan, "Throughput Optimization for SGF-NOMA via Distributed DRL with Prioritized Experience Replay", in Proc. IEEE Int. Communications Conf. (ICC'22), Seoul, South Korea, May 2022.
      54. X. Mu, Y. Liu, L. Guo, J. Lin and L. Hanzo, "Joint Radar and Multicast-Unicast Communication: A NOMA Aided Framework", in Proc. IEEE Int. Communications Conf. (ICC'22), Seoul, South Korea, May 2022.
      55. Y. Liu, X. Mu, R. Chober and H. V. Poor, "Simultaneously Transmitting and Reflecting (STAR)-RISs: A Coupled Phase-Shift Model", in Proc. IEEE Int. Communications Conf. (ICC'22), Seoul, South Korea, May 2022. (IEEE SPCC TC Best Paper Award)
      56. W. Ni, Y. Liu, H. Tian, Y. C. Eldar and K. Huang, "SemiFL: Semi-Federated Learning Empowered by Simultaneously Transmitting and Reflecting Reconfigurable Intelligent Surface", in Proc. IEEE Int. Communications Conf. (ICC'22), Seoul, South Korea, May 2022.
      57. R. Zhong, X. Liu, Y. Liu, Y. Chen and Z. Han, "Federated Learning Empowered Mobile RISs for NOMA Networks", in Proc. IEEE Int. Communications Conf. (ICC'22), Seoul, South Korea, May 2022.
      58. C. Zhang, W. Yi and Y. Liu, "Semi-Integrated-Sensing-and-Communication (Semi-ISaC) Networks Assisted by NOMA", in Proc. IEEE Int. Communications Conf. (ICC'22), Seoul, South Korea, May 2022.
      59. Z. Wang, Y. Liu, X. Mu and Z. Ding, "NOMA Inspired Interference Cancellation for Integrated Sensing and Communication", in Proc. IEEE Int. Communications Conf. (ICC'22), Seoul, South Korea, May 2022.

        60. 2021


      60. Z. Zhang, J. Chen, Q. Wu, Y. Liu , L. Lv and X. Su, "Enhancing Security of NOMA Networks via Distributed Intelligent Reflecting Surfaces", in Proc. IEEE Global Communications Conf. (GLOBECOM'21), Madrid, Spain, December 2021.
      61. W. Ni, Y. Liu , Y. C. Eldar, Z. Yang and H. Tian, ``Enabling Ubiquitous Non-Orthogonal Multiple Access and Pervasive Federated Learning via STAR-RIS", in Proc. IEEE Global Communications Conf. (GLOBECOM'21), Madrid, Spain, December 2021.
      62. C. Zhang, W. Yi, K. Han, Y. Liu, Z. Ding, and M. Renzo, ``Simultaneously Transmitting And Reflecting RIS Aided NOMA With Randomly Deployed Users", in Proc. IEEE Global Communications Conf. (GLOBECOM'21), Madrid, Spain, December 2021.
      63. W. Ahsan, W. Yi, Y. Liu, and A. Nallanathan, ``Reliable Reinforcement Learning Based NOMA Schemes for URLLC", in Proc. IEEE Global Communications Conf. (GLOBECOM'21), Madrid, Spain, December 2021.
      64. Y. Zou, Y. Liu, K. Han, X. Liu, and K. K. Chai, ``Meta-learning for RIS-assisted Non-Orthogonal Multiple Access Networks", in Proc. IEEE Global Communications Conf. (GLOBECOM'21), Madrid, Spain, December 2021.
      65. J. Zuo, Y. Liu, Z. Ding, and L. Song, ``Simultaneously Transmitting And Reflecting (STAR) RIS Assisted NOMA Systems", in Proc. IEEE Global Communications Conf. (GLOBECOM'21), Madrid, Spain, December 2021.
      66. Z. Tang, T. Hou, Y. Liu and J. Zhang ``Secrecy Performance Analysis for Reconfigurable Intelligent Surface aided NOMA Network", in Proc. IEEE Int. Communications Conf. (ICC'21) Workshop, Montreal, Canada, June 2021.
      67. X. Gao, Y. Liu and X. Mu ``SLARM: Simultaneous Localization and Radio Mapping for Communication-aware Connected Robot", in Proc. IEEE Int. Communications Conf. (ICC'21) Workshop, Montreal, Canada, June 2021.
      68. R. Zhong, X. Liu, Y. Liu and D. Zhang, and Y. Chen ``Path Design for NOMA-Enhanced Robots: A Machine Learning Approach with Radio Maps", in Proc. IEEE Int. Communications Conf. (ICC'21) Workshop, Montreal, Canada, June 2021.
      69. J. Lei, C. Feng, T. Zhang, Y. Liu and A. Nallanathan ``Trajectory Design in UAV-Based Emergency Communication Networks", in Proc. IEEE Int. Communications Conf. (ICC'21) Workshop, Montreal, Canada, June 2021.
      70. J. Xu and Y. Liu ``Reconfigurable Intelligent Surface-assisted Networks: Phase Alignment Categories", in Proc. IEEE Int. Communications Conf. (ICC'21), Montreal, Canada, June 2021.
      71. X. Gao, Y. Liu, and X. Mu, ``Trajectory and Passive Beamforming Design for IRS-aided Multi-Robot NOMA Indoor Networks", in Proc. IEEE Int. Communications Conf. (ICC'21), Montreal, Canada, June 2021.
      72. X. Mu, Y. Liu, L. Guo, J. Lin, and N. Al-Dhahir, ``Capacity Characterization of Intelligent Reflecting Surface Assisted NOMA Systems", in Proc. IEEE Int. Communications Conf. (ICC'21), Montreal, Canada, June 2021.
      73. M. Fayaz, W. Yi, Y. Liu, and A. Nallanathan, ``Transmit Power Pool Design for Uplink IoT Networks with Grant-free NOMA", in Proc. IEEE Int. Communications Conf. (ICC'21), Montreal, Canada, June 2021.
      74. C. Zhang, W. Yi, Y. Liu, and Q. Wang, ``Multi-cell NOMA: Coherent Reconfigurable Intelligent Surfaces Model With Stochastic Geometry", in Proc. IEEE Int. Communications Conf. (ICC'21), Montreal, Canada, June 2021.
      75. Y. Zou, Z. Qin, and Y. Liu, ``Joint User Activity and Data Detection in Grant-Free NOMA using Generative Neural Networks", in Proc. IEEE Int. Communications Conf. (ICC'21), Montreal, Canada, June 2021.
      76. W. Ni, Y. Liu, Z. Yang, and H. Tian ``Over-the-Air Federated Learning and Non-Orthogonal Multiple Access Unified by Reconfigurable Intelligent Surface", in Proc. IEEE INFOCOM workshop (INFOCOM'21).

        77. 2020


      77. Y. Hao, Z. Shi Y. Liu, ``A Wireless-Vision Dataset for Privacy Preserving Human Activity Recognition", in Proc. IEEE Multimedia Computing Networking and Applications (MCNA2020), online, 2020. [Paper]
      78. J. Xu and Y. Liu, ``A Novel Channel Model for Reconfigurable Intelligent Surface-assisted Wireless Networks", in Proc. IEEE Global Communications Conf.(GLOBECOM'20), Taibei, Taiwan, December 2020.
      79. Z. Yang, Y. Liu, Y. Chen and T. Zhou, ``Deep Reinforcement learning for RIS-Aided Non-Orthogonal Multiple Access Downlink Networks", in Proc. IEEE Global Communications Conf.(GLOBECOM'20), Taibei, Taiwan, December 2020.
      80. Z. Wang, T. Zhang, Y. Liu, and W. Xu, ``Caching Placement and Resource Allocation for AR Application in UAV NOMA Networks", in Proc. IEEE Global Communications Conf.(GLOBECOM'20), Taibei, Taiwan, December 2020.
      81. Y. Cheng, K. H. Li, Y. Liu,and K. C. Teh, ``Outage Performance of Downlink IRS-Assisted NOMA Systems", in Proc. IEEE Global Communications Conf.(GLOBECOM'20), Taibei, Taiwan, December 2020.
      82. C. Zhang, W. Yi, Y. Liu, Z. Qin, and K. K. Chai, ``Downlink Analysis for Reconfigurable Intelligent Surfaces Aided NOMA Networks", in Proc. IEEE Global Communications Conf.(GLOBECOM'20), Taibei, Taiwan, December 2020.
      83. Y. Guo, Z. Qin, Y. Liu, and N. AI-Dhahir, ``Intelligent Reflecting Surface Assisted NOMA Over Fading Channels", in Proc. IEEE Global Communications Conf.(GLOBECOM'20), Taibei, Taiwan, December 2020.
      84. X. Gao, Y. Liu, X. Liu and Z. Qin, ``Resource allocation in IRSs aided MISO-NOMA networks: A Machine Learning Approach", in Proc. IEEE Global Communications Conf.(GLOBECOM'20), Taibei, Taiwan, December 2020.
      85. Y. Xu, M. Chen, Z. Yang, Y. Liu, H. Long, and M. Shikh-Bahaei, ``Fair Non-Orthogonal Multiple Access Communication Systems with Reconfigurable Intelligent Surface", in Proc. IEEE PIMRC, Virtual Conference, Sept. 2020.
      86. Z. Yang, Y. Liu, Z. Qin and K. K. Chai, ``Semi-Grant-Free Uplink NOMA with Contention Control: A Stochastic Geometry Model", in Proc. IEEE Int. Communications Conf. (ICC'20), Virtual Conference, June 2020.
      87. Z. Wang, T. Zhang, Y. Liu, and W. Xu, ``Dynamic Caching Placement and Resource Allocation for Cache-Enabling UAV NOMA Networks", in Proc. IEEE Int. Communications Conf. (ICC'20) Workshop, Virtual Conference, June 2020.
      88. Z. Yang, Y. Liu, and Y. Chen, ``Distributed Reinforcement Learning for NOMA-Enabled Mobile Edge Computing", in Proc. IEEE Int. Communications Conf. (ICC'20) Workshop, Virtual Conference, June 2020.
      89. W. Ahsan, W. Yi, Z. Qin, Y. Liu, and A. Nallanathan, ``Reinforcement Learning for User Clustering in NOMA-enabled Uplink IoT", in Proc. IEEE Int. Communications Conf. (ICC'20) Workshop, Virtual Conference, June 2020.
      90. J. Zuo, Y. Liu, Z. Qin, and C. Shen, ``The Application of Intelligent Reflecting Surface in Downlink NOMA Systems", in Proc. IEEE Int. Communications Conf. (ICC'20) Workshop, Virtual Conference, June 2020.
      91. X. Liu, Y. Liu, Y. Chen, L. Wang and Z. Lu, ``Reinforcement Learning in V2I Communication Assisted Autonomous Driving", in Proc. IEEE Int. Communications Conf. (ICC'20), Virtual Conference, June 2020.
      92. T. Hou, Y. Liu, Z. Song, X. Sun, and Y. Chen, ``Performance Analysis for Large Intelligent Surfaces enabled MIMO Networks", in Proc. IEEE Int. Communications Conf. (ICC'20), Virtual Conference, June 2020.
      93. T. Hou, Y. Liu, Z. Song, X. Sun, Y. Chen and J. Hou, ``Massive NOMA Enhanced IoT Networks with Partial CSI", in Proc. IEEE Int. Communications Conf. (ICC'20), Virtual Conference, June 2020.
      94. Y. Wang, T. Zhang, Y. Liu, C. Feng, and A. Nallanathan, ``QoE Based Network Deployment and Caching Placement for Cache-Enabling UAV Networks", in Proc. IEEE Int. Communications Conf. (ICC'20), Virtual Conference, June 2020.

        95. 2019


      95. X. Fang, T. Zhang, Y. Liu, and Z. Zeng, ``Multi-agent Cooperative Alternating Q-learning Caching in D2D-enabled Cellular Networks", in Proc. IEEE Global Communications Conf.(GLOBECOM'19), Hawaii, USA, December 2019.
      96. J. Wang, Y. Liu, Z. Qin, Z. Chen, and Y. Liu, ``Subchannel Assignment and Power Allocation for NOMA in Spatial Modulation Systems", in Proc. IEEE Global Communications Conf.(GLOBECOM'19), Hawaii, USA, December 2019.
      97. T. Hou, Y. Liu, X. Sun, Z. Song and Y. Chen, ``Non-Orthogonal Multiple Access in Air-to-Everything (A2X) Networks", in Proc. IEEE Global Communications Conf.(GLOBECOM'19), Hawaii, USA, December 2019.
      98. W. Yi, Y. Liu, and A. Nallanathan, ``Coverage Analysis for MmWave-enabled V2X Networks via Stochastic Geometry", in Proc. IEEE Global Communications Conf.(GLOBECOM'19), Hawaii, USA, December 2019.
      99. X. Mu, Y. Liu, L. Guo, C. Dong, and J. Lin, ``Interference-Aware Trajectory Design for Ground-Aerial Uplink NOMA Cellular Networks", in Proc. IEEE Global Communications Conf.(GLOBECOM'19), Hawaii, USA, December 2019.
      100. Y. Qi, Z. Yang, Z. Qin, Y. Liu, and Y. Chen ``Big Data Prediction in Location-Aware Wireless Caching: A Machine Learning Approach", in Proc. IEEE Global Communications Conf.(GLOBECOM'19), Hawaii, USA, December 2019.
      101. X. Liu, Y. Liu, Y. Chen, L. Wang, and Z. Lu, ``Machine Learning Aided Trajectory Design and Power Control of Multi-UAV", in Proc. IEEE Global Communications Conf.(GLOBECOM'19), Hawaii, USA, December 2019.
      102. T. Hou, Y. Liu, X. Sun, Z. Song and Y. Chen, ``Non-Orthogonal Multiple Access in Multi-UAV Networks", Proc. IEEE VTC'2019 Fall, Hawaii, USA, Sept 2019.
      103. J. Li, Y. Liu, X. Li, C. Shen, and Y. Chen, ``Non-Orthogonal Multiple Access in Cooperative UAV Networks: A Stochastic Geometry Model", Proc. IEEE VTC'2019 Fall, Hawaii, USA, Sept 2019.
      104. D. Zhang, Y. Liu, L. Dai, A. K. Bashir, A. Nallanathan, and B. Shim, ``Performance Analysis of Decentralized V2X System with FD-NOMA", Proc. IEEE VTC'2019 Fall, Hawaii, USA, Sept 2019.
      105. C. Chao, T. Zhang, Y. Liu, G. Ye Li and Z. Zeng, ``Joint User Association and Caching Placement for Cache-Enabled UAVs in Cellular Networks", in Proc. IEEE INFOCOM'2019 Workshops, Paris, France, May 2019.
      106. C. Fan, T. Zhang, Y. Liu, and Z. Zeng, ``Backhaul Aware Analysis of Cache-enabled Heterogeneous Networks", Proc. IEEE PIMRC2019 Istanbul, Turkey, Sept 2019.
      107. J. Cui, Y. Liu, and A. Nallanathan, ``The Application of Multi-Agent Reinforcement Learning in UAV Networks", in Proc. IEEE Int. Communications Conf. (ICC'19) Workshop, Shanghai, China, May 2019.
      108. W. Yi, Y. Liu, M. Elkashlan, and A. Nallanathan, ``Modeling and Coverage Analysis of Downlink UAV Networks with MmWave Communications", in Proc. IEEE Int. Communications Conf. (ICC'19) Workshop, Shanghai, China, May 2019.
      109. X. Yue, Y. Liu, Y. Yao, X. Li, R. Liu, and A. Nallanathan, ``Secrecy Outage Performance of A Unified Non-Orthogonal Multiple Access Framework", in Proc. IEEE Int. Communications Conf. (ICC'19), Shanghai, China, May 2019.
      110. X. Fang, T. Zhang, Y. Liu, G. Li and Z. Zeng, ``Multi-Winner Auction Based Mobile User Caching in D2D-enabled Cellular Networks", in Proc. IEEE Int. Communications Conf. (ICC'19), Shanghai, China, May 2019.
      111. Z. Yang, Y. Liu, Y. Chen and G. Tyson, ``Deep Reinforcement Learning in Cache-Aided MEC Networks", in Proc. IEEE Int. Communications Conf. (ICC'19), Shanghai, China, May 2019.
      112. P. Zhao, X. Liu, Y. Liu, Y. Chen and K. K. Chai, ``Machine Learning for Position Prediction and Determination in Aerial Base Station System", in Proc. IEEE Int. Communications Conf. (ICC'19), Shanghai, China, May 2019.

        113. 2018


      113. X. Liu, Y. Liu, and Y. Chen, ``Deployment and Movement for Multiple Aerial Base Stations by Reinforcement Learning", in Proc. IEEE Global Communications Conf.(GLOBECOM'18), Abu Dhabi, December 2018.
      114. W. Yi, Y. Liu， and A. Nallanathan, ``A Unified Spatial Framework for Clustered UAV Networks Based on Stochastic Geometry'', in Proc. IEEE Global Communications Conf.(GLOBECOM'18), Abu Dhabi, December 2018.
      115. Z. Yang, Y. Liu, and Y. Chen, ``Q-Learning for Content Placement in Wireless Cooperative Caching", in Proc. IEEE Global Communications Conf.(GLOBECOM'18), Abu Dhabi, December 2018.
      116. X. Li, M. Matthaiou, Y. Liu, H. Ngo, and L. Li ``Multi-Pair Two-Way Massive MIMO Relaying with Hardware Impairments over Rician Fading Channels", in Proc. IEEE Global Communications Conf.(GLOBECOM'18), Abu Dhabi, December 2018.
      117. X. Li, J. Li, Y. Liu, Z. Ding, and A. Nallanathan, ``Outage Performance of Cooperative NOMA Networks with Hardware Impairments", in Proc. IEEE Global Communications Conf.(GLOBECOM'18), Abu Dhabi, December 2018.
      118. W. Dong, T. Zhang, Z. Hu, Y. Liu, and X. Han ``Energy-Efficient Hybrid Precoding for mmWave Massive MIMO Systems'', in Proc. IEEE International Conference on Communications in China (ICCC) Workshop, Beijing, China, August 2018.
      119. W. Yi, Y. Liu and A. Nallanathan, ``Modeling and Analysis of mmWave Communications in Cache-enabled HetNets'', in Proc. IEEE Int. Communications Conf. (ICC'18), Kansas City, U.S.A, May 2018.
        120. [Arxiv]
      120. W. Yi, Y. Liu and A. Nallanathan, ``Exploiting Multiple Access in Clustered Millimeter Wave Networks: NOMA or OMA?'', in Proc. IEEE Int. Communications Conf. (ICC'18), Kansas City, U.S.A, May 2018. [Arxiv]
      121. K. Wang, Y. Liu, Z. Ding and A. Nallanathan, ``User Association in Non-Orthogonal Multiple Access Networks'', in Proc. IEEE Int. Communications Conf. (ICC'18), Kansas City, U.S.A, May 2018.
      122. X. Yue, Y. Liu, S. Kang, A. Nallanathan and Y. Chen, ``Outage Performance of Two-Way Relay Non-Orthogonal Multiple Access Systems'', in Proc. IEEE Int. Communications Conf. (ICC'18), Kansas City, U.S.A, May 2018. [Arxiv]
      123. J. Zhao, Y. Liu , T. Mahmoodi, K. K. Chai, Y. Chen and Z. Han, ``Resource Allocation in Cache-Enabled CRAN with Non-Orthogonal Multiple Access'', in Proc. IEEE Int. Communications Conf. (ICC'18), Kansas City, U.S.A, May 2018.
      124. X. Yue, Z. Qin, Y. Liu, X. Dai, and Y. Chen, "Outage Performance of A Unified Non-Orthogonal Multiple Access Framework'', in Proc. IEEE Int. Communications Conf. (ICC'18), Kansas City, U.S.A, May 2018. [Arxiv]
      125. H. Xing, Y. Liu, A. Nallanathan, and Z. Ding ``Sum-rate Maximization Guaranteeing User Fairness for NOMA in Fading Channels'', in Proc. IEEE (WCNC'18), Barcelona, Spain, April 2018.
      126. W. Yi, Y. Liu, and A. Nallanathan, ``Modeling and Analysis of Clustered D2D Millimeter-Wave Communications'', in Proc. IEEE International Conference on Computing, Networking and Communications (ICNC'18), Maui, Hawaii, USA, December 2018.

        127. 2017


      127. X. Yue, Y. Liu, R. Liu, A. Nallanathan, and Z. Ding "Full/Half-Duplex Relay Selection for Cooperative NOMA Networks'', in Proc. IEEE Global Communications Conf.(GLOBECOM'17), Singapore, December 2017. [Slides]
      128. J. Cui, Y. Liu, Z. Ding, P. Fan, and A. Nallanathan "User Selection and Power Allocation for MmWave-NOMA Networks'', in Proc. IEEE Global Communications Conf. (GLOBECOM'17), Singapore, Singapore, December 2017. [Slides](Thanks for J. Cui for preparing the slides)
      129. F. J. Martin-Vega, Y. Liu, G. Gomez, M. C. Aguayo-Torres, and M. Elkashlan "Modeling and Analysis of NOMA Enabled CRAN with Cluster Point Process'', in Proc. IEEE Global Communications Conf. (GLOBECOM'17), Singapore, December 2017. [Slides]
      130. C. Pan, H. Mehrpouyan, Y. Liu, M. Elkashlan, and A. Nallanathan "Joint Pilot Allocation and Robust Beam-vector Design for Ultra-Dense TDD C-RAN'', in Proc. IEEE Global Communications Conf. (GLOBECOM'17), Singapore, December 2017.
      131. D. Fan, Y. Deng, F. Gao, Y. Liu, Z. Zhong and A. Nallanathan, "Training based DOA Estimation in Hybrid MmWave Massive MIMO Systems'', in Proc. IEEE Global Communications Conf. (GLOBECOM'17), Singapore, December 2017.
      132. J. Cui, Y. Liu, Z. Ding, P. Fan, and A. Nallanathan "A QoE-Aware Resource Allocation Strategy for Multi-cell NOMA Networks'', in Proc. IEEE Global Communications Conf. (GLOBECOM'17) Workshop, Singapore, December 2017. [Slides]
      133. D. Fan, Y. Liu, G. Wang, Z. Zhong and A. Nallanathan, "Joint Doppler and Channel Estimation for High-Speed Railway Wireless Communication with Massive ULA'', in Proc. IEEE Veh. Technol. Conf. (VTC-Spring'17) Workshop, Sydney, Australia, June 2017.
      134. D. Zhang, Y. Liu, Z. Ding, Z. Zhou, and A. Nallanathan, "Performance Analysis of Non-regenerative Relay Assisted NOMA System'', in Proc. International Conference on Wireless Communications and Signal Processing (WCSP), Nanjing, China, October 2017.
      135. S. M. Al-Basit, J. Cui, Y. Liu, Z. Ding, and P. Fan "Maximizing SINR for Non-Orthogonal Multiple Access With Bounded Channel Uncertainties'', in Proc. IEEE International Conference on Communications in China (ICCC) , Qingdao, China, October 2017.
      136. Z. Qin, Y. Liu, Geoffrey Y. Li, and J. A. McCann, "Performance Analysis of Clustered Low-Power Wide-Area Networks'', in Proc. IEEE Int. Communications Conf. (ICC'17), Paris, France, May 2017.
      137. X. Yue, Y. Liu, S. Kao, A. Nallanathan, and Z. Ding "Outage Performance of Full/Half-Duplex User Relaying in NOMA Systems'', in Proc. IEEE Int. Communications Conf. (ICC'17), Paris, France, May 2017. [Slides]
      138. J. Zhao, Y. Liu, K. K. Chai, A. Nallanathan, Y. Chen, and Z. Han, "Resource Allocation for Non-Orthogonal Multiple Access in Heterogeneous Networks'', in Proc. IEEE Int. Communications Conf. (ICC'17), Paris, France, May 2017.

        139. 2013-2016


      139. Y. Liu, Z. Qin, M. Elkashlan, Y. Gao, and A. Nallanathan, "Non-orthogonal Multiple Access in Massive MIMO Aided Heterogeneous Networks'', in Proc. IEEE Global Communications Conf. (GLOBECOM'16), Washington DC, USA, Dec. 2016. [Slides]
      140. J. Zhao, Y. Liu, K. K. Chai, Y. Chen, M. Elkashlan, and J. Alonso-Zarate, "NOMA-based D2D Communications: Towards 5G'', in Proc. IEEE Global Communications Conf. (GLOBECOM'16), Washington DC, USA, Dec. 2016. [Slides]
      141. Y. Liu, Z. Qin, M. Elkashlan, Y. Gao, and A. Nallanathan, "Physical Layer Security for 5G Non-orthogonal Multiple Access in Large-scale Networks'', in Proc. IEEE Int. Communications Conf. (ICC'16), Kuala Lumpur, Malaysia, May 2016. [Slides]
      142. Z. Qin, Y. Liu, Y. Gao, M. Elkashlan, and A. Nallanathan, "Throughput Analysis for Compressive Spectrum Sensing with Wireless Power Transfer'', in Proc. IEEE Global Communications Conf. (GLOBECOM'15), San Diego CA, USA, December 2015.
      143. Y. Liu, Z. Ding, M. Elkashlan, and H. V. Poor, "Cooperative Non-orthogonal Multiple Access in 5G system with SWIPT'', in Proc. European Signal Processing Conf. (EUSIPCO' 15), Nice, France, August 2015. (Invited Paper)
      144. Y. Liu, L. Wang, S. A. R. Zaidi, M. Elkashlan, and T. Q. Duong, ``Secure D2D Communication in Large-scale Cognitive Cellular Networks with Wireless Power Transfer'', in Proc. IEEE Int. Communications Conf. (ICC'15), London, UK, June 2015. [Slides]
      145. Y. Liu, L. Wang, M. Elkashlan, T. Q. Duong, and A. Nallanathan, "Two-way Relaying Networks with Wireless Power Transfer: Policies design and throughput analysis'', in Proc. IEEE Global Communications Conf. (GLOBECOM'14), Austin TX, USA, December 2014.
      146. S. A. Mousavifar, Y. Liu, C. Leung, M. Elkashlan, and T. Q. Duong, "Wireless Energy Harvesting and Spectrum Sharing in Cognitive Radio'', in Proc. IEEE Veh. Technol. Conf. (VTC-Fall'14), Vancouver, Canada, September 2014.
      147. Y. Liu, X. Guo, and S. Li, "A Channel Gain-based Hierarchical K-Best OSIC-SE Detection Algorithm for Stable Complexity in MIMO System'', in Proc. IEEE Int. Conf. on Communication Technology (ICCT), Guilin, China, November 2013.