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R. Jia, X. Chen, C. Zhong, D. W. K. Ng, H. Lin, and Z. Zhang, “Design of Non-Orthogonal Beamspace Multiple Access for Cellular Internet-of-Things,” IEEE Journal of Selected Topics in Signal Processing, 2019.
X. Shao, X. Chen, C. Zhong, J. Zhao, and Z. Zhang, “A Unified Design of Massive Access for Cellular Internet of Things,” IEEE Internet of Things Journal, vol. 6. no. 2, pp. 3934-3947, Apr. 2019.
Q. Qi and X. Chen, “Wireless Powered Massive Access for Cellular Internet of Things with Imperfect SIC and Non-Linear EH,” IEEE Internet of Things Journal, vol. 6, no. 2, pp. 3110-3120, Apr. 2019.
X. Chen, R. Jia, and D. W. K. Ng, “On the Design of Massive Non-Orthogonal Multiple Access with Imperfect Successive Interference Cancellation,” IEEE Transactions on Communications, vol. 67, no. 3, pp. 2539-2551, Mar. 2019.
X. Chen and R. Jia, “Exploiting Rateless Coding for Massive Access,” IEEE Transactions on Vehicular Technology, vol. 67, no. 11, pp. 11253-11257, Nov. 2018.
X. Chen, R. Jia, and D. W. K. Ng, “The Application of Relay to Massive Non-Orthogonal Multiple Access,” IEEE Transactions on Communications, vol. 66, no. 11, pp. 5168-5180, Nov. 2018.
X. Chen, Z. Zhang, C. Zhong, D. W. K. Ng, and R. Jia, “Exploiting Inter-User Interference for Secure Massive Non-Orthogonal Multiple Access,” IEEE Journal on Selected Areas in Communications, vol. 36, no. 4, pp. 788-801, Apr. 2018.
X. Chen, Z. Zhang, C. Zhong, R. Jia, and D. W. K. Ng, “Fully Non-Orthogonal Communication for Massive Access,” IEEE Transactions on Communications, vol. 16, no. 4, pp. 6766-6778, Apr. 2018.
X. Hu, C. Zhong, X. Chen, D.W. K. Ng, and Z. Zhang, “Spatial Modulation Assisted Multi-Antenna Non-Orthogonal Multiple Access,” IEEE Wireless Communications, vol. 25, no. 2, pp. 61-67, Apr. 2018.
Z. Zhang, H. Zhang, H. Dai, X. Chen, and D. Wu, “Fountain-Coded File Spreading over Mobile Networks,” IEEE Transactions on Wireless Communications, vol. 16, no. 10, pp. 6766-6778, Oct. 2017.
X. Chen, Z. Zhang, C. Zhong, and D. W. K. Ng, 'Exploiting Multiple-Antenna Techniques for Non-Orthogonal Multiple Access,' IEEE Journal on Selected Areas in Communications, vol. 35, no. 10, pp. 2207-2220, Oct. 2017.
X. Chen and Y. Zhang, “Mode Selection in MU-MIMO Downlink Networks: A Physical Layer Security Perspective,” IEEE Systems Journal, vol. 11, no. 2, pp. 1128-1136, Jun. 2017.
X. Chen, D. W. K. Ng, W. Gerstacker, and H-H. Chen, “A Survey of Multiple-Antenna Techniques for Physical Layer Security,” IEEE Communications Surveys & Tutorials, vol. 19, no. 2, pp. 1027-1053, Jun. 2017.
X. Jiang, C. Zhong, H. Lin, X. Chen, and Z. Zhang, “Proactive Eavesdropper in Relaying Systems,” IEEE Signal Processing Letters, vol. 24, no. 6, pp. 927-921, Jun. 2017.
H. Liang, C. Zhong, X. Chen, H. Suraweera, and Z. Zhang, “Wireless Powered Dual-Hop Multi-Antenna Relaying Systems: Impact of CSI and Antenna Correlation,” IEEE Transactions on Wireless Communications, vol. 16, no. 4, pp. 2505-2519, Apr. 2017.
J. Chen, X. Chen, T. Liu, and L. Lei, “Towards Green and Secure Communications over Massive MIMO Relay Networks: Joint Source and Relay Power Allocation,” IEEE Access, vol. 5, pp. 869-880, 2017.
C. Du, X. Chen, and L. Lei, “Energy-Efficient Optimization for Secrecy Wireless Information and Power Transfer in Massive MIMO Relaying Systems,” IET Communications, vol. 11, no. 1, pp. 10-16, Jan. 2017.
X. Chen, X. Chen, and T. Liu, 'A Unified Performance Optimization for Secrecy Wireless Information and Power Transfer over Interference Channels,' IEEE Access, vol. 5, pp. 12726-12736, 2017.
Y. Wu, X. Chen, C. Yuen, and C. Zhong, “Robust Resource Allocation for Secrecy Wireless Powered Communication Networks,” IEEE Communications Letters, vol. 20, no. 12, pp. 2430-2433, Dec. 2016.
X. Chen, J. Chen, H. Zhang, Y. Zhang, and C. Yuen, “On Secrecy Performance of A Multi-Antenna Jammer Aided Secure Communications with Imperfect CSI,” IEEE Transactions on Vehicular Technology, vol. 65, no. 10, pp. 8014-8024, Oct. 2016.
X. Chen, J. Chen, and T. Liu, “Secure Transmission in Wireless Powered Massive MIMO Relaying Systems: Performance Analysis and Optimization,” IEEE Transactions on Vehicular Technology, vol. 65, no. 10, pp. 8025-8035, Oct. 2016.
X. Jiang, C. Zhong, X. Chen, T. Q. Duong, T. Tsiftsis, and Z. Zhang, “Secrecy Performance of Wireless Powered Wiretap Channels,” IEEE Transactions on Communications, vol. 64, no. 9, pp. 3858-3871, Sept. 2016.
J. Chen, X. Chen, W. Gerstacker, and D. W. K. Ng, “Resource Allocation for a Massive MIMO Relay Aided Secure Communication,” IEEE Transactions on Information Forensics and Security, vol. 11, no. 8, pp. 1700-1711, Aug. 2016.
Y. Wu and X. Chen, “Robust Beamforming and Power Splitting for Secrecy Information and Power Transfer in Cognitive Relay Networks,” IEEE Communications Letters, vol. 20, no. 6, pp. 1152-1155, Jun. 2016.
X. Wang, X. Chen, W. Wu, N. An, and L. Wang, “Cooperative Application Execution in Mobile Cloud Computing: A Stackelberg Game Approach,” IEEE Communications Letters, vol. 20, no. 5, pp. 946-949, May 2016.
X. Chen, D. W. K. Ng, and H-H. Chen, “Secrecy Wireless Information and Power Transfer: Challenges and Opportunities,” IEEE Wireless Communications Magazine, vol. 23, no. 2, pp. 54-61, Apr. 2016.
X. Chen and X. Wang, “Statistical Precoder Design for Space-Time-Frequency Block Codes in Multiuser MIMO-MC-CDMA Systems,” IEEE Systems Journal, vol. 10, no. 1, pp. 218-227, Mar. 2016.
X. Chen and C. Yuen, “On Interference Alignment with Imperfect CSI: Characterizations of Outage Probability, Ergodic Rate and Symbol Error Rate,” IEEE Transactions on Vehicular Technology, vol. 65, no. 1, pp. 47-58, Jan. 2016.
X. Chen and C. Yuen, “Joint Optimization of Spectrum Sensing and Accessing in Multiuser MISO Cognitive Networks,” Wireless Communications and Mobile Computing, vol. 16, no. 1, pp. 111-123, Jan. 2016.
X. Chen, C. Zhong, C. Yuen, and H-H. Chen, “Multi-Antenna Relay Aided Wireless Physical Layer Security,” IEEE Communications Magazine, vol. 53, no. 12, pp. 40-46, Dec. 2015.
C. Zhong, X. Chen, Z. Zhang, and G. Karagiannidis, “Wireless Powered Communications: Performance Analysis and Optimization,” IEEE Transactions on Communications, vol. 63, no. 12, pp. 5178-5190, Dec. 2015.
X. Chen, Z. Zhang, and C. Yuen, “Resource Allocation for Cost Minimization in Limited Feedback MU-MIMO Systems with Delay Guarantee,” IEEE Systems Journal, vol. 9, no. 4, pp. 1229-1236, Dec. 2015.
X. Chen, L. Lei, H. Zhang, and C. Yuen, “Large-Scale MIMO Relaying Techniques for Physical Layer Security: AF or DF?” IEEE Transactions on Wireless Communications, vol.14, no. 9, pp. 5135-5146, Sept. 2015.
X. Chen, Z. Zhang, H-H. Chen, and H. Zhang, “Enhancing Wireless Information and Power Transfer by Exploiting Multi-Antenna Techniques,” IEEE Communications Magazine, vol. 53, no. 4, pp. 133-141, Apr. 2015.
X. Chen and L. Lei, “Adaptive Precoding and Power Allocation in Distributed Antenna Systems with Limited Feedback,” Wireless Communications and Mobile Computing, vol. 15, no. 5, pp. 834-847, Apr. 2015.
X. Chen and H-H. Chen, “Physical Layer Security in Multi-Cell MISO Downlink with Incomplete CSI-A Unified Secrecy Performance Analysis,” IEEE Transactions on Signal Processing, vol. 62, no. 23, pp. 6286-6297, Dec. 2014.
X. Chen, H-H. Chen, and W. Meng, “Cooperative Communications for Cognitive Radio Networks-from Theory to Applications,” IEEE Communications Surveys & Tutorials, vol. 16, no. 3, pp. 1180-1193, Sept. 2014.
X. Chen, Z. Zhang, and C. Yuen, “Adaptive Mode Selection in Multiuser MISO Cognitive Networks with Limited Cooperation and Feedback,” IEEE Transactions on Vehicular Technology, vol. 63, no. 4, pp. 1622-1632, May 2014.
X. Chen and C. Yuen, “Performance Analysis and Optimization for Interference Alignment over MIMO Interference Channels with Limited Feedback,” IEEE Transactions on Signal Processing, vol. 62, no. 7, pp. 1785-1795, Apr. 2014.
X. Chen, C. Yuen, and Z. Zhang, “Wireless Energy and Information Transfer Tradeoff for Limited Feedback Multi-Antenna Systems with Energy Beamforming,” IEEE Transactions on Vehicular Technology, vol. 63, no. 1, pp. 407-412, Jan. 2014.
X. Chen, X. Wang, and X. Chen, “Energy-Efficient Optimization for Wireless Information and Power Transfer in Large-Scale MIMO Systems Employing Energy Beamforming,” IEEE Wireless Communications Letters, vol. 2, no. 6, pp. 667-670, Dec. 2013.
X. Chen and R. Yin, “Performance Analysis for Physical Layer Security in Multi-Antenna Downlink Networks with Limited CSI Feedback,” IEEE Wireless Communications Letters, vol. 2, no. 5, pp. 503-506, Oct. 2013.
X. Chen and H-H. Chen, “Interference-Aware Resource Control in Multi-Antenna Cognitive Ad Hoc Networks with Heterogeneous Delay Constraints,” IEEE Communications Letters, vol. 17, no. 6, pp. 1184-1187, Jun. 2013.
X. Chen and L. Lei, “Energy-Efficient Optimization for Physical Layer Security in Multi-Antenna Downlink Networks with QoS Guarantee,” IEEE Communications Letters, vol. 17, no. 4, pp. 637-640, Apr. 2013.
X. Chen and C. Yuen, “Efficient Resource Allocation in Rateless Coded MU-MIMO Cognitive Radio Network with QoS Provisioning and Limited Feedback,” IEEE Transactions on Vehicular Technology, vol. 62, no. 1, pp. 395-399, Jan. 2013.
X. Chen, Z. Zhang, and S. Chen, “Finite-Signal-to-Noise Ratio Diversity-Multiplexing-Rate Trade-off in Limited Feedback Beamforming Systems with Imperfect Channel State Information,” IET Communications, vol. 6, no. 7, pp. 751-758, May 2012.
X. Chen, Z. Zhang, S. Chen, and C. Wang, “Adaptive Mode Selection for Multiuser MIMO Downlink Employing Rateless Codes with QoS Provisioning,” IEEE Transactions on Wireless Communications, vol. 11, no. 2, pp. 790-799, Feb. 2012.
X. Chen and Z. Zhang, “Exploiting Channel Angular Domain Information for Precoder Design in Distributed antenna System,” IEEE Transactions on Signal Processing, vol. 58, no. 11, pp. 5791-5801, Nov. 2010.
X. Chen, Z. Zhang, and H-H. Chen, “On Distributed Antenna System with Limited Feedback Precoding - Opportunities and Challenges,” IEEE Wireless Communications Magazine, vol. 17, no. 2, pp. 80-88, April, 2010.
X. Chen, Z. Zhang, and C. Wang, “Analysis and Comparison of Transmission Capacity for Multiuser Distributed and Co-located Antenna Systems,” Journal of University of Science and Technology of China, vol. 39, no. 10, pp. 1097-1101, Oct. 2009.
X. Chen and Z. Zhang, “Adaptive Beamforming Mode Selection Algorithm in Wireless Cognitive Radio Networks,” Journal of PLA University of Science and Technology (Natural Science Edition), vol. 9, no. 6, pp. 569-572, Dec. 2008.