Publications

Journals

J1 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," IEEE Transactions on Wireless Communications, early access.

J2 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 Journal of Vehicular Technology, vol. 6, pp. 1–29, Jan. 2025 (Invited Paper).

J3 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 Journal on Selected Areas in Communications, vol. 42, no. 6, pp. 1656–1672, Apr. 2024 (Popular Paper).

J4 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).

J5 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 Journal on Selected Areas in Communications, vol. 40, no. 10, pp. 3010–3026, Oct. 2022.

J6 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 Transactions on Communications, vol. 70, no. 5, pp. 3558–3574, May 2022 (ESI Highly Cited Paper).

J7 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 Communications Letters, vol. 26, no. 5, pp. 1150–1154, May 2022 (ESI Hot Paper) (ESI Highly Cited Paper) (2025 IEEE ComSoc Heinrich Hertz Award).

J8 K. Zhi, C. Pan, H. Ren, K. Wang, ‘‘Ergodic Rate Analysis of Reconfigurable Intelligent Surface-Aided Massive MIMO Systems With ZF Detectors," IEEE Communications Letters, vol. 26, no. 2, pp. 264–268, Feb. 2022.

J9 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 Communications Letters, vol. 10, no. 5, pp. 1128–1132, May 2021.

J10 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 Communications Letters, vol. 10, no. 3, pp. 654–658, Mar. 2021.

J11 C. Pan, G. Zhou, K. Zhi, S. Hong, T. Wu, Y. Pan, H. Ren, M.D. Renzo, A.L. Swindlehurst, R. Zhang, A.Y. Zhang, ‘‘An Overview of Signal Processing Techniques for RIS/IRS-Aided Wireless Systems," IEEE Journal of Selected Topics in Signal Processing, vol. 16, no. 5, pp. 883–917, Aug. 2022 (ESI Hot Paper) (ESI Highly Cited Paper) (Invited Paper).

J12 J. Dai, Y. Wang, C. Pan, K. Zhi, H. Ren, K. Wang, ‘‘Reconfigurable Intelligent Surface Aided Massive MIMO Systems With Low-Resolution DACs," IEEE Communications Letters, vol. 25, no. 9, pp. 3124–3128, Sept. 2021.

J13 M. Liu, Y. Zhang, Y. Jin, K. Zhi, C. Pan, ‘‘Towards Near-Field Communications for 6G: Challenges and Opportunities," ZTE Communications, vol. 22, no. 1, pp. 3–15, 2024.

J14 J. Dai, J. Ge, K. Zhi, C. Pan, Z. Zhang, J. Wang, X. You, ‘‘Two-Timescale Transmission Design for RIS-Aided Cell-Free Massive MIMO Systems," IEEE Transactions on Wireless Communications, vol. 23, no. 6, pp. 6498–6517, Jun. 2024.

J15 J. Dai, S. Zhang, K. Zhi, C. Pan, H. Ren, X. Wang, C.-X. Wang, ‘‘Two-Timescale Design for Simultaneous Transmitting and Reflecting RIS-Assisted Massive MIMO Systems With Imperfect CSI," IEEE Transactions on Communications, vol. 72, no. 7, pp. 4287–4304, Jul. 2024.

J16 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 Journal on Selected Areas in Communications, vol. 42, no. 10, pp. 2803–2819, Oct. 2024.

J17 N. Yan, K. Wang, K. Zhi, C. Pan, K.K. Chai, H.V. Poor, ‘‘Device Scheduling for Secure Aggregation in Wireless Federated Learning," IEEE Internet of Things Journal, vol. 11, no. 17, pp. 28851–28862, Sept. 2024.

J18 T. Wu, C. Pan, K. Zhi, H. Ren, M. Elkashlan, J. Wang, C. Yuen, ‘‘Employing High-Dimensional RIS Information for RIS-Aided Localization Systems," IEEE Communications Letters, vol. 28, no. 9, pp. 2046–2050, Sept. 2024.

J19 M. Liu, H. Ren, C. Pan, B. Wang, Z. Yu, R. Weng, K. Zhi, Y. He, ‘‘Joint Beamforming Design for Double Active RIS-Assisted Radar-Communication Coexistence Systems," IEEE Transactions on Cognitive Communications and Networking, vol. 10, no. 5, pp. 1704–1717, Oct. 2024.

J20 M. Liu, C. Pan, K. Zhi, H. Ren, J. Wang, ‘‘Hybrid Precoding Design for Near-Field Wideband THz Systems with Spatial Non-Stationarity," IEEE Communications Letters, vol. 28, no. 10, pp. 2372–2376, Oct. 2024.

J21 X. Lai, J. Yao, K. Zhi, T. Wu, D. Morales-Jimenez, K.K. Wong, ‘‘FAS-RIS: A Block-Correlation Model Analysis," IEEE Transactions on Vehicular Technology, vol. 74, no. 2, pp. 3412–3417, Feb. 2025.

J22 L. Li, K. Zhi, C. Pan, ‘‘Transmission Design for XL-RIS-Aided Massive MIMO System with Visibility Regions," Frontiers of Information Technology & Electronic Engineering, vol. 25, pp. 1679–1694, Feb. 2025.

J23 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 Transactions on Wireless Communications, vol. 24, no. 7, pp. 5901–5916, Jul. 2025.

J24 Y. Zhao, L. Dai, et al., ‘‘Near-Field Communications: Characteristics, Technologies, and Engineering," Frontiers of Information Technology & Electronic Engineering, vol. 25, pp. 1580–1626, Feb. 2025.

J25 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," IEEE Transactions on Wireless Communications, early access.

Conference Papers

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, K.K. 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, G. Caire, ‘‘Multi-Cell Holographic MIMO with Per-RF Chain Power Constraints," accepted by IEEE International Conference on Communications Workshops (ICC Workshops), 2025.

C8 K. Zhi, 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, 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 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, J. Wang, ‘‘Two-Timescale Design for Simultaneous Transmitting and Reflecting RIS-Assisted Massive MIMO Systems," IEEE Wireless Communications and Networking Conference (WCNC), Dubai, UAE, 2024, pp. 01–06.

C12 M. Liu, H. Ren, C. Pan, B. Wang, Z. Yu, R. Weng, 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, 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, G. Caire, ‘‘Cooperative Multistatic Target Detection in Cell-Free Communication Networks," accepted by IEEE Wireless Communications and Networking Conference (WCNC), 2025.

C15 Y. Song, K. Zhi, T. Yang, S. Li, P. Ciblat, G. Caire, ‘‘Performance Analysis of Network Sensing in the Distributed MIMO Radar System," accepted by IEEE International Conference on Communications Workshops (ICC), 2025.

C16 T. Yang, K. Zhi, S. Li, 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, J. Wang, ‘‘Low-Complexity Precoding Design for mmWave/Terahertz Multiuser System in Near Field," accepted by International Conference on Wireless Communications and Signal Processing (WCSP), 2025.