Journal
* YEAR 2025
- [55] J. An, M. Debbah, T. J. Cui, Z. N. Chen and C. Yuen, “Emerging technologies in intelligent metasurfaces: Shaping the future of wireless communications,” IEEE Trans. Antennas Propag., 2025, Early Access. (Invited Paper)
[arXiv] - [54] H. Liu, J. An, X. Jia, L. Gan, G. K. Karagiannidis, B. Clerckx, M. Bennis, M. Debbah and T. J. Cui, “Stacked intelligent metasurfaces for wireless communications: Applications and challenges,” IEEE Wireless Commun., 2025, Early Access.
[arXiv] [code] [slides] [post-EN] [post-CN] [video-EN] [video-CN] - [53] M. Liu, J. An, C. Huang and C. Yuen, “Over-the-air ODE-inspired neural network for dual task-oriented semantic communications,” IEEE Trans. Cogn. Commun. Netw., 2025, Early Access.
[arXiv] - [52] Z. Teng, J. An, C. Masouros, H. Li, L. Gan and D. W. K. Ng, “Dynamic precoding for near-field secure communications: Implementation and performance analysis,” IEEE Internet Things J., 2025, Early Access.
[arXiv] - [51] H. Liu, J. An, G. C. Alexandropoulos, D. W. K. Ng, C. Yuen and L. Gan, “Multi-user MISO with stacked intelligent metasurfaces: A DRL-based sum-rate optimization approach,” IEEE Trans. Cogn. Commun. Netw., 2025, Early Access.
[arXiv] - [50] S. U. Hassan, Z. Ye, J. An and M. B. Hossen, “Sparse channel estimation and passive beamforming with practical phase shift model for IRS-assisted OFDM systems,” Signal Process., vol. 234, Sept. 2025.
[arXiv] - [49] J. An, M. D. Renzo, M. Debbah, H. V. Poor and C. Yuen, “Stacked intelligent metasurfaces for multiuser downlink beamforming in the wave domain,” IEEE Trans. Wireless Commun., 2025, Early Access.
[arXiv] - [48] E. Shi, J. Zhang, J. An, G. Zhang, Z. Liu, C. Yuen and B. Ai, “Joint AP-UE association and precoding for SIM-aided cell-free massive MIMO systems,” IEEE Trans. Wireless Commun., 2025, Early Access.
[arXiv] - [47] J. An, Z. Han, D. Niyato, M. Debbah, C. Yuen and L. Hanzo, “Flexible intelligent metasurfaces for enhancing MIMO communications,” IEEE Trans. Commun., 2025, Early Access.
[arXiv] - [46] Z. Yu, J. An, L. Gan, H. Li and S. Chatzinotas, “Weighted codebook scheme for RIS-assisted point-to-point MIMO communications,” IEEE Wireless Commun. Lett., vol. 14, no. 5, pp. 1571-1575, May 2025.
[arXiv] - [45] S. Yang, J. An, Y. Xiu, W. Lyu, B. Ning, Z. Zhang, M. Debbah and C. Yuen, “Flexible antenna arrays for wireless communications: Modeling and performance evaluation,” IEEE Trans. Wireless Commun., 2025, Early Access.
[arXiv] - [44] Q. Li, M. El-Hajjar, C. Xu, J. An, C. Yuen and L. Hanzo, “Stacked intelligent metasurface-based transceiver design for near-field wideband systems,” IEEE Trans. Commun., 2025, Early Access.
[arXiv] [code] [slides] [post-EN] [post-CN] [video-EN] [video-CN] - [43] E. Shi, J. Zhang, Y. Zhu, J. An, C. Yuen and B. Ai, “Uplink performance of stacked intelligent metasurface-enhanced cell-free massive MIMO systems,” IEEE Trans. Wireless Commun., vol. 24, no. 5, pp. 3731-3746, May 2025.
[arXiv] - [42] J. An, C. Yuen, M. D. Renzo, M. Debbah, H. V. Poor and L. Hanzo, “Flexible intelligent metasurfaces for downlink multiuser MISO communications,” IEEE Trans. Wireless Commun., vol. 24, no. 4, pp. 2940-2955, Apr. 2025.
[arXiv] - [41] H. Niu, X. Lei, J. An, L. Zhang and C. Yuen, “On the efficient design of stacked intelligent metasurfaces for secure SISO transmission,” IEEE Trans. Inf. Forensics Security, vol. 20, pp. 60-70, Mar. 2025.
[arXiv] [code] [slides] [post-EN] [post-CN] [video-EN] [video-CN] - [40] G. Huang, J. An, Z. Yang, L. Gan, M. Bennis and M. Debbah, “Stacked intelligent metasurfaces for task-oriented semantic communications,” IEEE Wireless Commun. Lett., vol. 14, no. 2, pp. 310-314, Feb. 2025.
[arXiv] [code] [slides] [post-EN] [post-CN] [video-EN] [video-CN] - [39] Y. Hu, J. Zhang, E. Shi, Y. Lu, J. An, C. Yuen and B. Ai, “Joint beamforming and power allocation design for stacked intelligent metasurfaces-aided cell-free massive MIMO systems,” IEEE Trans. Veh. Technol., vol. 74, no. 3, pp. 5235-5240, Mar. 2025.
[arXiv] [code] [slides] [post-EN] [post-CN] [video-EN] [video-CN]
* YEAR 2024
- [38] L. Liu, Z. Zhang, X. Zhang, P. Wei, J. An and H. Li, “Joint spectrum sensing and DOA estimation based on a resource-efficient sub-Nyquist array receiver,” IEEE Trans. Signal Process., vol. 72, pp. 5354-5370, Oct. 2024.
[arXiv] - [37] H. Niu, J. An, A. Papazafeiropoulos, L. Gan, S. Chatzinotas and M. Debbah, “Stacked intelligent metasurfaces for integrated sensing and communications,” IEEE Wireless Commun. Lett., vol. 13, no. 10, pp. 2807-2811, Oct. 2024.
[arXiv] [code] [slides] [post-EN] [post-CN] [video-EN] [video-CN] - [36] Z. Yu, J. An, E. Basar, L. Gan and C. Yuen, “Environment-aware codebook design for RIS-assisted MU-MISO communications: Implementation and performance analysis,” IEEE Trans. Commun., vol. 72, no. 12, pp. 7466-7479, Dec. 2024.
[arXiv] [code] [slides] [post-EN] [post-CN] [video-EN] [video-CN] - [35] J. An, C. Yuen, Y. L. Guan, M. Di Renzo, M. Debbah, H. V. Poor and L. Hanzo, “Two-dimensional direction-of-arrival estimation using stacked intelligent metasurfaces,” IEEE J. Sel. Areas Commun., vol. 42, no. 10, pp. 2786-2802, Oct. 2024.
[arXiv] - [34] J. An, C. Yuen, L. Dai, M. Di Renzo, M. Debbah and L. Hanzo, “Near-field communications: Research advances, potential, and challenges,” IEEE Wireless Commun., vol. 31, no. 3, pp. 100-107, Jun. 2024.
[arXiv] - [33] Q. Li, M. El-Hajjar, C. Xu, J. An, C. Yuen and L. Hanzo, “Stacked intelligent metasurfaces for holographic MIMO-aided cell-free networks,” IEEE Trans. Commun., vol. 72, no. 11, pp. 7139-7151, Nov. 2024.
[arXiv] - [32] A. Papazafeiropoulos, J. An, P. Kourtessis, T. Ratnarajah and S. Chatzinotas, “Achievable rate optimization for stacked intelligent metasurface-assisted holographic MIMO communications,” IEEE Trans. Wireless Commun., vol. 23, no. 10, pp. 13173-13186, Oct. 2024.
[arXiv] - [31] J. An, C. Yuen, C. Xu, H. Li, D. W. K. Ng, M. Di Renzo, M. Debbah and L. Hanzo, “Stacked intelligent metasurface-aided MIMO transceiver design,” IEEE Wireless Commun., vol. 31, no. 4, pp. 123-131, Aug. 2024. (WoS Highly Cited Paper)
[arXiv] - [30] X. Yao, J. An, L. Gan, M. Di Renzo and C. Yuen, “Channel estimation for stacked intelligent metasurface-assisted wireless networks,” IEEE Wireless Commun. Lett., vol. 13, no. 5, pp. 1349-1353, May 2024.
[arXiv] [code] [slides] [post-EN] [post-CN] [video-EN] [video-CN] - [29] S. Lin, J. An, L. Gan, M. Debbah and C. Yuen, “Stacked intelligent metasurface enabled LEO satellite communications relying on statistical CSI,” IEEE Wireless Commun. Lett., vol. 13, no. 5, pp. 1295-1299, May 2024.
[arXiv] [code] [slides] [post-EN] [post-CN] [video-EN] [video-CN] - [28] G. Sun, R. He, J. An, B. Ai, Y. Song, Y. Niu, G. Wang and C. Yuen, “Geometric-based channel modeling and analysis for double-RIS-aided vehicle-to-vehicle communication systems,” IEEE Internet Things J., vol. 11, no. 10, pp. 18888-18901, May 2024.
[arXiv] - [27] J. An, C. Xu, D. W. K. Ng, C. Yuen and L. Hanzo, “Adjustable-delay RIS is capable of improving OFDM systems,” IEEE Trans. Veh. Technol., vol. 73, no. 7, pp. 9927-9942, Jul. 2024.
[arXiv] - [26] N. U. Hassan, J. An, M. Di Renzo, M. Debbah and C. Yuen, “Efficient beamforming and radiation pattern control using stacked intelligent metasurfaces,” IEEE Open J. Commun. Soc., vol. 5, pp. 599-611, Jan. 2024.
[arXiv] - [25] W. Wang, C. Luo, J. An, L. Gan, H. Liao and C. Yuen, “Semisupervised RF fingerprinting with consistency-based regularization,” IEEE Internet Things J., vol. 11, no. 5, pp. 8624-8636, Mar. 2024.
[arXiv] - [24] W. Xu, J. An, H. Li, L. Gan and C. Yuen, “Algorithm-unrolling-based distributed optimization for RIS-assisted cell-free networks,” IEEE Internet Things J., vol. 11, no. 1, pp. 944-957, Jan. 2024. (WoS Highly Cited Paper)
[arXiv] - [23] J. An, C. Xu, Q. Wu, D. W. K. Ng, M. Di Renzo, C. Yuen and L. Hanzo, “Codebook-based solutions for reconfigurable intelligent surfaces and their open challenges,” IEEE Wireless Commun., vol. 31, no. 2, pp. 134-141, Apr. 2024. (WoS Highly Cited Paper)
[arXiv]
* YEAR 2023
- [22] J. An, C. Xu, D. W. K. Ng, G. C. Alexandropoulos, C. Huang, C. Yuen and L. Hanzo, “Stacked intelligent metasurfaces for efficient holographic MIMO communications in 6G,” IEEE J. Sel. Areas Commun., vol. 41, no. 8, pp. 2380-2396, Aug. 2023. (WoS Highly Cited Paper)
[arXiv] - [21] H. Liu, J. An, W. Xu, X. Jia, L. Gan and C. Yuen, “K-means based constellation optimization for index modulated reconfigurable intelligent surfaces,” IEEE Commun. Lett., vol. 27, no. 8, pp. 2152-2156, Aug. 2023.
[arXiv] [code] [slides] [post-EN] [post-CN] [video-EN] [video-CN] - [20] J. An, C. Yuen, C. Huang, M. Debbah, H. V. Poor and L. Hanzo, “A tutorial on holographic MIMO communications — Part III: Open opportunities and challenges,” IEEE Commun. Lett., vol. 27, no. 7, pp. 1674-1678, Jul. 2023. (Invited Paper)
[arXiv] - [19] J. An, C. Yuen, C. Huang, M. Debbah, H. V. Poor and L. Hanzo, “A tutorial on holographic MIMO communications — Part II: Performance analysis and holographic beamforming,” IEEE Commun. Lett., vol. 27, no. 7, pp. 1669-1673, Jul. 2023. (Invited Paper)
[arXiv] - [18] J. An, C. Yuen, C. Huang, M. Debbah, H. V. Poor and L. Hanzo, “A tutorial on holographic MIMO communications — Part I: Channel modeling and channel estimation,” IEEE Commun. Lett., vol. 27, no. 7, pp. 1664-1668, Jul. 2023. (Invited Paper)
[arXiv] - [17] J. An, H. Li, D. W. K. Ng and C. Yuen, “Fundamental detection probability vs. achievable rate tradeoff in integrated sensing and communication systems,” IEEE Trans. Wireless Commun., vol. 22, no. 12, pp. 9835-9853, Dec. 2023.
[arXiv] - [16] X. Cai, C. Huang, J. An, W. Xu, L. Wang and C. Yuen, “Non-coherent chaotic communications aided by RIS: A performance-enhanced approach,” IEEE Commun. Lett., vol. 27, no. 6, pp. 1614-1618, Jun. 2023.
[arXiv] - [15] X. Jia, J. An, H. Liu, H. Liao, L. Gan and C. Yuen, “Environment-aware codebook for reconfigurable intelligent surface-aided MISO communications,” IEEE Wireless Commun. Lett., vol. 12, no. 7, pp. 1174-1178, Jul. 2023.
[arXiv] [code] [slides] [post-EN] [post-CN] [video-EN] [video-CN] - [14] R. Li, H. Liao, J. An, C. Yuen and L. Gan, “Intra-class universal adversarial attacks on deep learning-based modulation classifiers,” IEEE Commun. Lett., vol. 27, no. 5, pp. 1297-1301, May 2023.
[arXiv] - [13] C. Xu, J. An, T. Bai, S. Sugiura, R. G. Maunder, L.-L. Yang, M. Di Renzo and L. Hanzo, “Antenna selection for reconfigurable intelligent surfaces: A transceiver-agnostic passive beamforming configuration,” IEEE Trans. Wireless Commun., vol. 22, no. 11, pp. 7756-7774, Nov. 2023.
[arXiv] - [12] C. Xu, J. An, T. Bai, S. Sugiura, R. G. Maunder, Z. Wang, L.-L. Yang and L. Hanzo, “Channel estimation for reconfigurable intelligent surface assisted high-mobility wireless systems,” IEEE Trans. Veh. Technol., vol. 72, no. 1, pp. 718-734, Jan. 2023.
[arXiv] - [11] C. Xu, L. Xiang, J. An, C. Dong, S. Sugiura, R. G. Maunder, L.-L. Yang and L. Hanzo, “OTFS-aided RIS-assisted SAGIN systems outperform their OFDM counterparts in doubly selective high-Doppler scenarios,” IEEE Internet Things J., vol. 10, no. 1, pp. 682-703, Jan. 2023.
[arXiv]
* YEAR 2022
- [10] W. Xu, J. An, Y. Xu, C. Huang, L. Gan and C. Yuen, “Time-varying channel prediction for RIS-assisted MU-MISO networks via deep learning,” IEEE Trans. Cogn. Commun. Netw., vol. 8, no. 4, pp. 1802-1815, Dec. 2022.
[arXiv] - [9] W. Xu, J. An, C. Huang, L. Gan and C. Yuen, “Deep reinforcement learning based on location-aware imitation environment for RIS-aided mmWave MIMO systems,” IEEE Wireless Commun. Lett., vol. 11, no. 7, pp. 1493-1497, Jul. 2022.
[arXiv] - [8] J. An, C. Xu, Y. Liu, L. Gan and L. Hanzo, “The achievable rate analysis of generalized quadrature spatial modulation and a pair of low-complexity detectors,” IEEE Trans. Veh. Technol., vol. 71, no. 5, pp. 5203-5215, May 2022.
[arXiv] - [7] C. Xu, J. An, T. Bai, L. Xiang, S. Sugiura, R. G. Maunder, L.-L. Yang and L. Hanzo, “Reconfigurable intelligent surface assisted multi-carrier wireless systems for doubly selective high-mobility Ricean channels,” IEEE Trans. Veh. Technol., vol. 71, no. 4, pp. 4023-4041, Apr. 2022.
[arXiv] - [6] J. An, Q. Wu and C. Yuen, “Scalable channel estimation and reflection optimization for reconfigurable intelligent surface-enhanced OFDM systems,” IEEE Wireless Commun. Lett., vol. 11, no. 4, pp. 796-800, Apr. 2022.
[arXiv] - [5] J. An, C. Xu, L. Wang, Y. Liu, L. Gan and L. Hanzo, “Joint training of the superimposed direct and reflected links in reconfigurable intelligent surface assisted multiuser communications,” IEEE Trans. Green Commun. Netw., vol. 6, no. 2, pp. 739-754, Jun. 2022.
[arXiv] - [4] J. An, C. Xu, Y. Liu, L. Gan and L. Hanzo, “Low-complexity improved-rate generalised spatial modulation: Bit-to-symbol mapping, detection and performance analysis,” IEEE Trans. Veh. Technol., vol. 71, no. 1, pp. 1060-1065, Jan. 2022.
[arXiv] - [3] J. An, C. Xu, L. Gan and L. Hanzo, “Low-complexity channel estimation and passive beamforming for RIS-assisted MIMO systems relying on discrete phase shifts,” IEEE Trans. Commun., vol. 70, no. 2, pp. 1245-1260, Feb. 2022. (WoS Highly Cited Paper)
[arXiv]
* YEAR 2021
* YEAR 2020
Conference
* YEAR 2025
- [24] S. Lin, J. An, L. Gan and M. Debbah, “UAV-mounted SIM: A hybrid optical-electronic neural network for DoA estimation,” Proc. IEEE Int. Conf. Acoust., Speech Signal Process. (ICASSP), Hyderabad, India, 2025, pp. 1-5.
[arXiv] [video-EN] - [23] L. Liu, X. Zhang, X. Zhou, L. Gan, J. An and H. Li, “Identical-delay based 2-D DOA and frequency joint estimation with sub-Nyquist sampling for URA,” Proc. IEEE Int. Conf. Acoust., Speech Signal Process. (ICASSP), Hyderabad, India, 2025, pp. 1-5.
[arXiv]
* YEAR 2024
- [22] S. Yang, J. An, Y. Xiu, W. Lyu, B. Ning, Z. Zhang, M. Debbah and C. Yuen, “Flexible antenna arrays for wireless communications: Modeling and performance evaluation,” Proc. Int. Conf. Commun. Technol. (ICCT), Chengdu, China, 2024, pp. 2034-2039.
[arXiv] - [21] J. An, C. Yuen, M. Di Renzo, M. Debbah, H. V. Poor and L. Hanzo, “Downlink multiuser communications relying on flexible intelligent metasurfaces,” Proc. IEEE Global Commun. Conf. (GLOBECOM), Cape Town, South Africa, 2024, pp. 4932-4937.
[arXiv] - [20] Z. Teng, J. An, X. Lu, Z. Xu and L. Gan, “A dynamic precoding scheme for near-field secure communications,” Proc. IEEE Global Commun. Conf. (GLOBECOM), Cape Town, South Africa, 2024, pp. 4095-4100.
[arXiv] - [19] X. Jia, J. An, X. Lu, Z. Xu, L. Gan and C. Yuen, “Dynamic codebook for reconfigurable intelligent surface-aided multiuser MISO communications,” Proc. IEEE Global Commun. Conf. (GLOBECOM), Cape Town, South Africa, 2024, pp. 5138-5143.
[arXiv] - [18] M. Liu, J. An, C. Huang, A. Alhammadi, F. Bader, S. Muhaidat, M. Debbah and C. Yuen, “Air-ODE neural network with distributed RISs aided communication systems,” Proc. IEEE Middle East Conf. Commun. Netw. (MECOM), Abu Dhabi, United Arab Emirates, 2024, pp. 356-361.
[arXiv] - [17] Z. Teng, H. Zhang, J. An, L. Gan, H. Li and C. Yuen, “Low-complexity frequency invariant beamformer design based on SRV-constrained array response control,” Proc. IEEE Veh. Technol. Conf. (VTC2024-Spring), Singapore, Singapore, 2024, pp. 1-5.
[arXiv] [video-EN] - [16] X. Jia, J. An, H. Liu, L. Gan, M. Di Renzo, M. Debbah and C. Yuen, “Stacked intelligent metasurface enabled near-field multiuser beamfocusing in the wave domain,” Proc. IEEE Veh. Technol. Conf. (VTC2024-Spring), Singapore, Singapore, 2024, pp. 1-5.
[arXiv] [video-EN] - [15] Z. Yu, J. An, L. Gan and C. Yuen, “Environment-aware codebook for RIS-assisted MU-MISO communications: Implementation and performance analysis,” Proc. IEEE Veh. Technol. Conf. (VTC2024-Spring), Singapore, Singapore, 2024, pp. 1-5.
[arXiv] [video-EN] - [14] X. Yao, J. An, G. Huang, H. Liu, L. Gan and C. Yuen, “Sparse channel estimation for stacked intelligent metasurface-assisted mmWave communications,” Proc. IEEE VTS Asia Pacific Wireless Commun. Symp. (APWCS), Singapore, Singapore, 2024, pp. 1-5.
[arXiv] - [13] E. Shi, J. Zhang, Y. Zhu, Z. Liu, J. An, C. Yuen and B. Ai, “Uplink performance and beamforming design of SIM-enhanced cell-free massive MIMO systems,” Proc. IEEE VTS Asia Pacific Wireless Commun. Symp. (APWCS), Singapore, Singapore, 2024, pp. 1-5.
[arXiv] - [12] H. Niu, J. An, L. Zhang, X. Lei and C. Yuen, “Enhancing physical layer security for SISO systems using stacked intelligent metasurfaces,” Proc. IEEE VTS Asia Pacific Wireless Commun. Symp. (APWCS), Singapore, Singapore, 2024, pp. 1-5.
[arXiv] - [11] Z. Li, J. An and C. Yuen, “Stacked intelligent metasurfaces for fully-analog wideband beamforming design,” Proc. IEEE VTS Asia Pacific Wireless Commun. Symp. (APWCS), Singapore, Singapore, 2024, pp. 1-5.
[arXiv] [code] [slides] [post-EN] [post-CN] [video-EN] [video-CN] - [10] H. Liu, J. An, D. W. K. Ng, G. C. Alexandropoulos and L. Gan, “DRL-based orchestration of multi-user MISO systems with stacked intelligent metasurfaces,” Proc. IEEE Int. Conf. Commun. (ICC), Denver, CO, USA, 2024, pp. 4991-4996.
[arXiv] - [9] J. An, C. Yuen, Y. L. Guan, M. Di Renzo, M. Debbah, H. V. Poor and L. Hanzo, “Stacked intelligent metasurface performs a 2D DFT in the wave domain for DOA estimation,” Proc. IEEE Int. Conf. Commun. (ICC), Denver, CO, USA, 2024, pp. 3445-3451.
[arXiv] - [8] A. M. Nor, O. Fratu, S. Halunga, J. An, Z. Zaharis and P. Velanas, “Position based near-field codebook design and beam training for extremely large-scale ARIS,” Proc. IEEE Int. Mediterranean Conf. Commun. Netw. (MeditCom), Madrid, Spain, 2024, pp. 215-220.
[arXiv] - [7] Q. -U. -A. Nadeem, J. An and A. Chaaban, “Hybrid digital-wave domain channel estimator for stacked intelligent metasurface enabled multi-user MISO systems,” Proc. IEEE Wireless Commun. Netw. Conf. (WCNC), Dubai, United Arab Emirates, 2024, pp. 1-6.
[arXiv] - [6] L. Liu, Z. Li, J. An, L. Gan and H. Li, “DOA estimation for switch-element arrays based on sparse representation,” Proc. IEEE Int. Conf. Acoust., Speech Signal Process. (ICASSP), Seoul, Korea, Republic of, 2024, pp. 8506-8510.
[arXiv] - [5] L. Liu, Z. Li, J. An, L. Gan and H. Li, “A CCM-based joint DOA-frequency estimation and signal recovery with efficient sub-Nyquist sampling,” Proc. IEEE Int. Conf. Acoust., Speech Signal Process. (ICASSP), Seoul, Korea, Republic of, 2024, pp. 8501-8505.
[arXiv]
* YEAR 2023
- [4] J. An and C. Yuen, “Pilot power allocation for channel estimation in a multi-RIS aided communication system,” Proc. IEEE Global Commun. Conf. (GLOBECOM), Kuala Lumpur, Malaysia, 2023, pp. 5707-5713.
[arXiv] - [3] J. An, M. Di Renzo, M. Debbah and C. Yuen, “Stacked intelligent metasurfaces for multiuser beamforming in the wave domain,” Proc. IEEE Int. Conf. Commun. (ICC), Rome, Italy, 2023, pp. 2834-2839. (IEEE ICC Best Paper Award)
[arXiv]
* YEAR 2022
* YEAR 2018
