Publications

Journals

J1 K. Zhi, C. Pan, H. Ren, K. K. Chai, C. X. Wang, R. Schober, X. You, ‘‘Performance Analysis and Low-Complexity Design for XL-MIMO with Near-Field Spatial Non-Stationarities,’’ IEEE J. Sel. Areas Commun., vol. 42, no. 6, pp. 1656-1672, Apr. 2024 (Popular paper).

J2 K. Zhi, C. Pan, H. Ren, K. Wang, M. Elkashlan, M. D. Renzo, R. Schober, H. V. Poor, J. Wang, L. Hanzo, ‘‘Two-timescale design for reconfigurable intelligent surface-aided massive MIMO systems with imperfect CSI,’’ IEEE Transactions on Information Theory, vol. 69, no. 5, pp. 3001-3033, May 2023 (ESI Highly Cited Paper).

J3 K. Zhi, C. Pan, G. Zhou, H. Ren, M. Elkashlan, R. Schober, ‘‘Is RIS-Aided Massive MIMO Promising With ZF Detectors and Imperfect CSI?,’’ IEEE J. Sel. Areas Commun., vol. 40, no. 10, pp. 3010-3026, Oct. 2022.

J4 K. Zhi, C. Pan, H. Ren, K. Wang, ‘‘Power Scaling Law Analysis and Phase Shift Optimization of RIS-Aided Massive MIMO Systems With Statistical CSI,’’ IEEE Trans. Commun., vol. 70, no. 5, pp. 3558-3574, May 2022 (ESI Highly Cited Paper).

J5 K. Zhi, C. Pan, H. Ren, K. K. Chai, M. Elkashlan, ‘‘Active RIS Versus Passive RIS: Which is Superior With the Same Power Budget?,’’ IEEE Commun. Lett., vol. 26, no. 5, pp. 1150-1154, May 2022 (2025 IEEE ComSoc Heinrich Hertz Award) (*ESI Hot Paper) (ESI Highly Cited Paper).

J6 K. Zhi, C. Pan, H. Ren, K. Wang, ‘‘Ergodic Rate Analysis of Reconfigurable Intelligent Surface-Aided Massive MIMO Systems With ZF Detectors,’’ IEEE Commun. Lett., vol. 26, no. 2, pp. 264-268, Feb. 2022.

J7 K. Zhi, C. Pan, H. Ren, K. Wang, ‘‘Statistical CSI-Based Design for Reconfigurable Intelligent Surface-Aided Massive MIMO Systems With Direct Links,’’ IEEE Wireless Commun. Lett., vol. 10, no. 5, pp. 1128-1132, May 2021.

J8 K. Zhi, C. Pan, H. Ren, K. Wang, ‘‘Uplink Achievable Rate of Intelligent Reflecting Surface-Aided Millimeter-Wave Communications With Low-Resolution ADC and Phase Noise,’’ IEEE Wireless Commun. Lett., vol. 10, no. 3, pp. 654-658, March 2021.

J9 G. Chen, Q. Wu, K. Zhi (Corresponding author), X. Mu, and Y. Liu, ‘‘Sum Capacity Characterization of Pinching Antennas-Assisted Multiple Access Channels,’’ early access in IEEE Trans. Veh. Technol., pp. 1-6, 2026.

J10 J. Yao, X. Lai, K. Zhi (Corresponding author), T. Wu, M. Jin, C. Pan, M. Elkashlan, C. Yuen, K. K. Wongs, ‘‘A Framework of FAS-RIS Systems: Performance Analysis and Throughput Optimization,’’ early access in IEEE Trans. Wireless Commun.

J11 Q. Tao, Z. Li, K. Zhi (Corresponding author), S. Li, W. Yuan, L. Zaniboni, S. Stanczak, E. Viterbo, X. Wang, ‘‘A Survey on Reconfigurable Intelligent Surface-Assisted Orthogonal Time Frequency Space Systems,’’ IEEE Open J. Veh. Technol., vol. 6, pp. 1-29, Jan. 2025 (Invited Paper).

J12 C. Pan, G. Zhou, K. Zhi, S. Hong, T. Wu, Y. Pan, H. Ren, M. D. Renzo, A. Lee Swindlehurst, R. Zhang, A. Y. Zhang, ‘‘An Overview of Signal Processing Techniques for RIS/IRS-aided Wireless Systems,’’ IEEE J. Sel. Topics Signal Process., vol. 16, no. 5, pp. 883-917, Aug. 2022 (ESI Hot Paper) (ESI Highly Cited Paper) (Invited Paper).

J13 J. Dai, Y. Wang, C. Pan, K. Zhi, H. Ren, K. Wang, ‘‘Reconfigurable Intelligent Surface Aided Massive MIMO Systems With Low-Resolution DACs,’’ IEEE Commun. Lett., vol. 25, no. 9, pp. 3124-3128, Sept. 2021.

J14 M. Liu, Y. Zhang, Y. Jin, K. Zhi, C. Pan, ‘‘Towards Near-Field Communications for 6G: Challenges and Opportunities,’’ ZTE Communications, 2024, 22(1): 3-15.

J15 J. Dai, J. Ge, K. Zhi, C. Pan, Z. Zhang, J. Wang, and X. You, ‘‘Two-Timescale Transmission Design for RIS-Aided Cell-Free Massive MIMO Systems,’’ IEEE Trans. Wireless Commun., vol. 23, no. 6, pp. 6498-6517, June 2024.

J16 J. Dai, S. Zhang, K. Zhi, C. Pan, H. Ren, X. Wang, and C.-X. Wang, ‘‘Two-Timescale Design for Simultaneous Transmitting and Reflecting RIS-Assisted Massive MIMO Systems With Imperfect CSI,’’ IEEE Trans. Commun., vol. 72, no. 7, pp. 4287-4304, July 2024.

J17 T. Wu, C. Pan, K. Zhi, H. Ren, M. Elkashlan, C. X. Wang, R. Schober, X. H. You, ‘‘Exploit High-Dimensional RIS Information to Localization: What Is the Impact of Faulty Element?,’’ IEEE J. Sel. Areas Commun., vol. 42, no. 10, pp. 2803-2819, Oct. 2024.

J18 N. Yan, K. Wang, K. Zhi, C. Pan, K. Keong Chai, and H. Vincent Poor, ‘‘Device Scheduling for Secure Aggregation in Wireless Federated Learning,’’ IEEE Internet Things J., vol. 11, no. 17, pp. 28851-28862, Sept. 2024.

J19 T. Wu, C. Pan, K. Zhi, H. Ren, M. Elkashlan, J. Wang, and C. Yuen, ‘‘Employing High-Dimensional RIS Information for RIS-aided Localization Systems,’’ IEEE Commun. Lett., vol. 28, no. 9, pp. 2046-2050, Sept. 2024.

J20 M. Liu, H. Ren, C. Pan, B. Wang, Z. Yu, R. Weng, K. Zhi, and Y. He, ‘‘Joint Beamforming Design for Double Active RIS-Assisted Radar-Communication Coexistence Systems,’’ IEEE Trans. Cogn. Commun. Netw., vol. 10, no. 5, pp. 1704-1717, Oct. 2024.

J21 M. Liu, C. Pan, K. Zhi, H. Ren, and J. Wang, ‘‘Hybrid Precoding Design for Near-Field Wideband THz Systems with Spatial Non-Stationarity,’’ IEEE Commun. Lett., vol. 28, no. 10, pp. 2372-2376, Oct. 2024.

J22 X. Lai, J. Yao, K. Zhi, T. Wu, D. Morales-Jimenez, K. K. Wong, ‘‘FAS-RIS: A Block-Correlation Model Analysis,’’ IEEE Trans. Veh. Technol., vol. 74, no. 2, pp. 3412-3417, Feb. 2025.

J23 L. Li, K. Zhi, and C. Pan, ‘‘Transmission Design for XL-RIS-Aided Massive MIMO System with Visibility Regions,’’ Front. Inf. Tech. Electron. Eng., vol. 25, 1679-1694, Feb. 2025.

J24 N. Yan, K. Wang, K. Zhi, C. Pan, K. K. Chai, H. V. Poor, ‘‘Secure and Private Over-the-air Federated Learning: Biased and Unbiased Aggregation Design,’’ IEEE Trans. Wireless Commun., vol. 24, no. 7, pp. 5901-5916, July 2025.

J25 Y. Zhao, L. Dai, et al., ‘‘Near-field Communications: Characteristics, Technologies, and Engineering,’’ Front. Inf. Tech. Electron. Eng., vol. 25, 1580-1626, Feb. 2025 (Cover paper).

J26 X. Chen, H. Ren, C. Pan, Z. Peng, K. Zhi, et al., ‘‘Performance Analysis on RIS-Aided Wideband Massive MIMO OFDM Systems with Low-Resolution ADCs,’’ early access in IEEE Trans. Wireless Commun.

J27 T. Wu, J. Yao, J. Zheng, K. Zhi, X. Li, M. Elkashlan, N. Al-Dhahir, M. C. Valenti, and C. Yuen, ‘‘Unleashing More Potential from FAS: A Framework of FAS-CoNOMA Systems,’’ early access in IEEE Trans. Commun., pp. 1-1, 2026.

J28 T. Wu, K. Zhi, J. Yao, X. Lai, J. Zheng, H. Niu, M. Elkashlan, K.-K. Wong, C.-B. Chae, Z. Ding, G. K. Karagiannidis, M. Debbah, and C. Yuen, ‘‘Fluid Antenna Systems Enabling 6G: Principles, Applications, and Research Directions,’’ early access in IEEE Wireless Commun., pp. 1-9, 2025.

J29 T. Wu, X. Lai, K. Zhi, M. Elkashlan, N. Al-Dhahir, M. C. Valenti, and F. Adachi, ‘‘FAS-RIS for V2X: Unlocking Realistic Performance Analysis with Finite Elements,’’ early access in IEEE Trans. Veh. Technol., pp. 1-6, 2025.

Conference

C1 K. Zhi, G. Chen, L. Qiu, X. Liang, C. Ren, ‘‘Analysis and Optimization of Random Cache in Multi-Antenna HetNets with Interference Nulling,’’ IEEE Global Communications Conference (GLOBECOM), 2019, pp. 1-6.

C2 K. Zhi, C. Pan, G. Zhou, H. Ren, K. Wang, ‘‘Analysis and Optimization of RIS-aided Massive MIMO Systems with Statistical CSI,’’ IEEE/CIC International Conference on Communications in China (ICCC Workshops), 2021, pp. 153-158.

C3 K. Zhi, C. Pan, H. Ren, K. Wang, M. Elkashlan, ‘‘Reconfigurable Intelligent Surface-Aided MISO Systems with Statistical CSI: Channel Estimation, Analysis and Optimization,’’ IEEE Workshop on Signal Processing Advances in Wireless Communications (SPAWC), 2021, pp. 576-580 (Invited Paper).

C4 K. Zhi, C. Pan, G. Zhou, H. Ren, M. Elkashlan, R. Schober, ‘‘Analysis and Optimization of RIS-Aided Massive MIMO with ZF Detectors and Imperfect CSI,’’ IEEE International Conference on Communications (ICC), 2022, pp. 219-224.

C5 K. Zhi, C. Pan, H. Ren, K. K. Chai, C. X. Wang, R. Schober, X. You, ‘‘XL-MIMO with Near-Field Spatial Non-Stationarities: Low-complexity Detector Design,’’ IEEE Global Communications Conference (GLOBECOM), Kuala Lumpur, Malaysia, 2023, pp. 7194-7199.

C6 K. Zhi, C. Pan, T. Wu, H. Ren, and K. Keong Chai, ‘‘Analysis of XL-Array with Near-Field EM Channels,’’ European Signal Processing Conference (EUSIPCO), Helsinki, Finland, 2023, pp. 910-914 (Invited Paper).

C7 K. Zhi, T. Yang, S. Li, Y. Song, T. Wu, and G. Caire, ‘‘Multi-Cell Holographic MIMO with Per-RF Chain Power Constraints,’’ IEEE International Conference on Communications Workshops (ICC Workshops), Montreal, QC, Canada, 2025, pp. 806-811.

C8 K. Zhi, and G. Caire, ‘‘Beam Training-Based Hybrid Precoding for Multi-User Holographic MIMO,’’ International Workshop on Smart Antennas (WSA), 2025 (Invited Paper).

C9 K. Zhi, T. Yang, S. Xue, and G. Caire, ‘‘Near-Field 3D Localization and MIMO Channel Estimation with Sub-Connected Planar Arrays,’’ accepted by IEEE Global Communications Conference Workshops (GLOBECOM Workshops), 2025.

C10 G. Zhou, C. Pan, H. Ren, K. Zhi, S. Hong, K. K. Chai, ‘‘User Cooperation for RIS-aided Secure SWIPT MIMO Systems under the passive eavesdropping,’’ IEEE/CIC International Conference on Communications in China (ICCC Workshops), 2021, pp. 171-176.

C11 J. Dai, S. Zhang, K. Zhi, C. Pan, H. Ren, Z. Zhang, and J. Wang, ‘‘Two-Timescale Design for Simultaneous Transmitting and Reflecting RIS-Assisted Massive MIMO Systems,’’ IEEE Wireless Communications and Networking Conference (WCNC), Dubai, United Arab Emirates, 2024, pp. 01-06.

C12 M. Liu, H. Ren, C. Pan, B. Wang, Z. Yu, R. Weng, and K. Zhi, ‘‘Joint Beamforming Design for Double Active RIS-assisted Radar-Communication Coexistence,’’ IEEE International Workshop on Radio Frequency and Antenna Technologies (iWRF&AT), Shenzhen, China, 2024, pp. 295-300.

C13 X. Lai, K. Zhi, W. Li, T. Wu, C. Pan, and M. Elkashlan, ‘‘FAS-assisted Wireless Powered Communication Systems,’’ IEEE International Conference on Communications Workshops (ICC Workshops), Denver, CO, USA, 2024, pp. 1731-1736.

C14 T. Yang, S. Li, Y. Song, K. Zhi, and G. Caire, ‘‘Cooperative Multistatic Target Detection in Cell-Free Communication Networks,’’ IEEE Wireless Communications and Networking Conference (WCNC), 2025.

C15 Y. Song, K. Zhi, T. Yang, S. Li, P. Ciblat and G. Caire, ‘‘Performance Analysis of Network Sensing in the Distributed MIMO Radar System,’’ IEEE International Conference on Communications Workshops (ICC), Montreal, QC, Canada, 2025, pp. 6609-6614.

C16 T. Yang, K. Zhi, S. Li, and G. Caire, ‘‘Near-Field Imaging by Exploiting Frequency Correlation in Wireless Communication Networks,’’ accepted by IEEE Global Communications Conference Workshops (GLOBECOM Workshops), 2025.

C17 M. Liu, C. Pan, K. Zhi, H. Ren, and J. Wang, ‘‘Low-Complexity Precoding Design for mmWave/Terahertz Multiuser System in Near Field,’’ 2025 Seventeenth International Conference on Wireless Communications and Signal Processing (WCSP), 2025, pp. 1-6.