Selected Publications of Rui Zhang on Intelligent Reflecting Surface (IRS)
  ♦ Overview/Tutorial:  
   

♠ “Intelligent Reflecting Surface for Communications and Sensing”, Keynote, IEEE International Conference on Communications (ICC), Workshop on Synergies of Communication, Localization, and Sensing Towards 6G, 2022.
♠ Tutorial, “Towards Smart and Reconfigurable Environment: Intelligent Reflecting Surface Aided Wireless Network,” at IEEE Global Communications Conference (Globecom), 2020. “Towards Smart and Reconfigurable Wireless Environment with Intelligent Reflecting Surfaces: A Communications Perspective,” Keynote, Workshop on Reconfigurable Intelligent Surfaces for Wireless Communication for Beyond 5G.
♠ Q. Wu, S. Zhang, B. Zheng, C. You, and R. Zhang, “Intelligent reflecting surface aided wireless communications: a tutorial,” IEEE Transactions on Communications, vol. 69, no. 5, pp. 3313-3351, May 2021. (Invited Paper) [Talk Slides and Video] at IEEE ComSoc Wireless Communications Technical Committee Seminars.  
♠ Tutorial, “Towards Smart and Reconfigurable Environment: Intelligent Reflecting Surface Aided Wireless Networks,” at IEEE WCNC, 2020.
♠ E. Basar, M. D. Renzo, J. D. Rosny, M. Debbah, M. S. Alouini, and R. Zhang, “Wireless communications through reconfigurable intelligent surfaces,” IEEE Access, vol. 7, September 2019.
♠ Q. Wu and R. Zhang, “Towards smart and reconfigurable environment: intelligent reflecting surface aided wireless network,” IEEE Communications Magazine, vol. 58, no. 1, pp. 106-112, January 2020.
  ♦ Passive Beamforming Optimization:
   

♠ W. Ma, L. Zhu, and R. Zhang, “Passive beamforming for 3-D coverage in IRS-assisted communications,” IEEE Wireless Communications Letters.
♠ S. Zhang and R. Zhang, “Capacity characterization for intelligent reflecting surface aided MIMO communication,” IEEE Journal on Selected Areas in Communications, vol. 38, no. 8, pp. 1823-1838, August 2020.
♠ Y. Yang, B. Zheng, S. Zhang, and R. Zhang, “Intelligent reflecting surface meets OFDM: protocol design and rate maximization,” IEEE Transactions on Communications, vol. 60, no. 7, pp. 4522-4535, July 2020. 
♠ Q. Wu and R. Zhang, “Beamforming optimization for wireless network aided by intelligent reflecting surface with discrete phase shifts,” IEEE Transactions on Communications, vol. 68, no. 3, pp. 1838-1851, March 2020.
♠ Q. Wu and R. Zhang, “Intelligent reflecting surface enhanced wireless network via joint active and passive beamforming,” IEEE Transactions on Wireless Communications, vol. 18, no. 11, pp. 5394-5409, November 2019.

  ♦ Channel Estimation, Beam Training:  
   

♠ B. Zheng, C. You, W. Mei, and R. Zhang, “A survey on channel estimation and practical passive beamforming design for intelligent reflecting surface aided wireless communications,”IEEE Communications Surveys and Tutorials.
♠ X. Guan, Q. Wu, and R. Zhang, “Anchor-assisted channel estimation for intelligent reflecting surface aided multiuser communication,” IEEE Transactions on Wireless Communications.
♠ X. Hu, R. Zhang, and C. Zhong, “Semi-passive elements assisted channel estimation for intelligent reflecting surface-aided communications,” IEEE Transactions on Wireless Communications, vol. 21, no. 2, pp. 1132-1142, February 2022.
♠ B. Zheng, C. You, and R. Zhang, “Fast channel estimation for IRS-assisted OFDM,” IEEE Wireless Communications Letters, vol. 10, no. 3, pp. 580-584, March 2021.
♠ C. You, B. Zheng, and R. Zhang, “Fast beam training for IRS-assisted multiuser communications,” IEEE Wireless Communications Letters, vol. 9, no. 11, pp. 1845-1849, November 2020.
♠ B. Zheng, C. You, and R. Zhang, “Intelligent reflecting surface assisted multi-user OFDMA: channel estimation and training design,” IEEE Transactions on Wireless Communications, vol. 19, no. 12, pp. 8315-8329, December 2020.
♠ C. You, B. Zheng, and R. Zhang, “Channel estimation and passive beamforming for intelligent reflecting surface: discrete phase shift and progressive refinement,” IEEE Journal on Selected Areas in Communications, vol. 38, no. 11, pp. 2604-2620, November 2020.
♠ B. Zheng and R. Zhang, “Intelligent reflecting surface enhanced OFDM: channel estimation and reflection optimization,”IEEE Wireless Communications Letters, vol. 9, no. 4, pp. 518-522, April 2020.
  ♦ Double-IRS System:  
   

♠ B. Zheng, S. Lin, and R. Zhang, “Intelligent reflecting surface-aided LEO satellite communication: cooperative passive beamforming and distributed channel estimation,” IEEE Journal on Selected Areas in Communications, special issue on Antenna Array Enabled Space/Air/Ground Communications and Networking. 
♠ Y. Han, S. Zhang, L. Duan, and R. Zhang, “Double-IRS aided MIMO communication under LoS channels: capacity maximization and scaling,” IEEE Transactions on Communications, vol. 70, no. 4, pp. 2820-2837, April 2022.
♠ B. Zheng, C. You, and R. Zhang, “Efficient channel estimation for double-IRS aided multi-user MIMO system,” IEEE Transactions on Communications, vol. 9, no. 6, pp. 3818-3832, June 2021. 
♠ C. You, B. Zheng, and R. Zhang, “Wireless communication via double IRS: channel estimation and passive beamforming designs,” IEEE Wireless Communications Letters, vol. 10, no. 2, pp. 431-435, February 2021.
♠ B. Zheng, C. You, and R. Zhang, “Double-IRS assisted multi-user MIMO: cooperative passive beamforming design,” IEEE Transactions on Wireless Communications, vol. 20, no. 7, pp. 4513-4526, July 2021. 
♠ Y. Han, S. Zhang, L. Duan, and R. Zhang, “Cooperative double-IRS aided communication: beamforming design and power scaling,” IEEE Wireless Communications Letters, vol. 9, no. 8, pp. 1206-1210, August 2020.

  ♦ IRS Deployment:  
   

♠ C. You, B. Zheng, W. Mei, and R. Zhang, “How to deploy intelligent reflecting surfaces in wireless network: BS-side, user-side or both sides?” Journal of Communications and Information Networks, vol. 7, no. 1, March 2022. (Invited Paper)
♠ S. Zhang and R. Zhang, “Intelligent reflecting surface aided multi-user communication: capacity region and deployment strategy,” IEEE Transactions on Communications, vol. 69, no. 9, pp. 5790-5806, September 2021.
  ♦ IRS-aided Wireless Network Capacity:  
   

♠ J. Lyu and R. Zhang, “Hybrid active/passive wireless network aided by intelligent reflecting surface: system modeling and performance analysis,” IEEE Transactions on Wireless Communications, vol. 20, no. 11, pp. 7196-7212, November 2021.
♠ J. Lyu and R. Zhang, “Spatial throughput characterization for intelligent reflecting surface aided multiuser system,” IEEE Wireless Communications Letters, vol. 9, no. 6, pp. 834-838, June 2020.
  ♦ Multi-IRS Aided Wireless Network:  
   

♠ Y. Huang, W. Mei, and R. Zhang, “Empowering base stations with co-site intelligent reflecting surfaces: user association, channel estimation and reflection optimization,” IEEE Transactions on Communications.
♠ T. V. Nguyen, D. N. Nguyen, M. D. Renzo, and R. Zhang, “Leveraging secondary reflections and mitigating interference in multi-IRS/RIS aided wireless network,” IEEE Transactions on Wireless Communications.
♠ W. Mei, B. Zheng, C. You, and R. Zhang, “Intelligent reflecting surface aided wireless networks: from single-reflection to multi-reflection design and optimization,” Proceedings of the IEEE. (Invited Paper)
♠ W. Mei and R. Zhang, “Intelligent reflecting surface for multi-path beam routing with active/passive beam splitting and combining,” IEEE Communications Letters, vol. 26, no. 5, pp. 1165-1169, May 2022.
♠ W. Mei and R. Zhang, “Distributed beam training for intelligent reflecting surface enabled multi-hop routing,” IEEE Wireless Communications Letters, vol. 10, no. 11, pp. 2489-2493, November 2021.
♠ W. Mei and R. Zhang, “Multi-beam multi-hop routing for intelligent reflecting surfaces aided massive MIMO,” IEEE Transactions on Wireless Communications, vol. 21, no. 3, pp. 1897-1912, March 2022.
♠ W. Mei and R. Zhang, “Cooperative beam routing for multi-IRS aided communication,” IEEE Wireless Communications Letters, vol. 10, no. 2, pp. 426-430, February 2021.
♠ W. Mei and R. Zhang, “Performance analysis and user association optimization for wireless network aided by multiple intelligent reflecting surfaces,” IEEE Transactions on Communications, vol. 69, no. 9, pp. 6296-6312, September 2021.
  ♦ IRS-aided Active Relaying:  
   

♠ Z. Kang, C. You, and R. Zhang, “IRS-aided wireless relaying: deployment strategy and capacity scaling,” IEEE Wireless Communications Letters, vol. 11, no.2, pp. 215-219, February 2022.  
♠ B. Zheng and R. Zhang, “IRS meets relaying: joint resource allocation and passive beamforming optimization,” IEEE Wireless Communications Letters, vol. 10, no. 9, pp. 2080-2084, September 2021.
  ♦ Active IRS:  
    ♠ C. You and R. Zhang, “Wireless communication aided by intelligent reflecting surface: active or passive?” IEEE Wireless Communications Letters, vol. 10, no. 12, pp. 2659-2663, December 2021.
  ♦ Passive Beamforming with Imperfect CSI:  
    ♠ M. M. Zhao, A. Liu, and R. Zhang, “Outage-constrained robust beamforming for intelligent reflecting surface aided wireless communication,” IEEE Transactions on Signal Processing, vol. 69, pp. 1301-1316, 2021.
♠ M. M. Zhao, A. Liu, Y. Wan, and R. Zhang, “Two-timescale beamforming optimization for intelligent reflecting surface aided multiuser communication with QoS constraints,” IEEE Transactions on Wireless Communications, vol. 20, no. 9, pp. 6179-6194, September, 2021.
♠ M. M. Zhao, Q. Wu, M. J. Zhao, and R. Zhang, “Exploiting amplitude control in intelligent reflecting surface aided wireless communication with imperfect CSI,” IEEE Transactions on Communications, vol. 9, no. 6, pp. 4216-4231, June 2021.
♠ M. M. Zhao, Q. Wu, M. J. Zhao, and R. Zhang, “Intelligent reflecting surface enhanced wireless networks: two-timescale beamforming optimization,” IEEE Transactions on Wireless Communications, vol. 20, no.1, pp. 2-17, January 2021.
  ♦ IRS Hardware Constraint:  
   

♠ S. Abeywickrama, R. Zhang, Q. Wu, and C. Yuen, “Intelligent reflecting surface: practical phase shift model and beamforming optimization,” IEEE Transactions on Communications, vol. 68, no. 9, pp. 5849-5863, September 2020. 

  ♦ IRS-aided Multiple Access/Spectrum Sharing:  
   

♠ B. Zheng and R. Zhang, “Simultaneous transmit diversity and passive beamforming with large-scale intelligent reflecting surface,” IEEE Transactions on Wireless Communications.
♠ V. Kumar, M. F. Flanagan, R. Zhang, and L.-N. Tran, “Achievable rate maximization for underlay spectrum sharing MIMO system with intelligent reflecting surface,” IEEE Wireless Communications Letters.
♠ Q. Tao, S. Zhang, C. Zhong, and R. Zhang, “Intelligent reflecting surface aided multicasting with random passive beamforming,” IEEE Wireless Communications Letters, vol. 10, no. 1, pp. 92-96, January 2021.
♠ X. Guan, Q. Wu, and R. Zhang, “Joint power control and passive beamforming in IRS-assisted spectrum sharing,” IEEE Communications Letters, vol. 24, no. 7, pp. 1553-1557, July 2020.
♠ B. Zheng, Q. Wu, and R. Zhang, “Intelligent reflecting surface-assisted multiple access with user paring: NOMA or OMA?” IEEE Communications Letters, vol. 24, no. 4, pp. 753-757, April 2020.
♠ Y. Yang, S. Zhang, and R. Zhang, “IRS-enhanced OFDMA: Joint resource allocation and passive beamforming optimization,” IEEE Wireless Communications Letters, vol. 9, no. 6, pp. 760-764, June 2020.
  ♦ IRS-aided SWIPT:  
   

♠ Q. Wu, X. Guan, and R. Zhang, “Intelligent reflecting surface aided wireless energy and information transmission: an overview,” Proceedings of the IEEE, vol. 110, no. 1, pp. 150-170, January 2022. (Invited Paper)
♠ A. Khalili, S. Zargari, Q. Wu, D. Ng, and R. Zhang, “Multi-objective resource allocation for IRS-aided SWIPT,” IEEE Wireless Communications Letters, vol. 10, no. 6, pp. 1324-1328, June 2021.
♠ S. Zargari, A. Khalili, and R. Zhang, “Energy efficiency maximization via joint active and passive beamforming design for multiuser MISO IRS-aided SWIPT,” IEEE Wireless Communications Letters, vol. 10, no. 3, pp. 557-561, March 2021.
♠ Q. Wu and R. Zhang, “Joint active and passive beamforming optimization for intelligent reflecting surface assisted SWIPT under QoS constraints,” IEEE Journal on Selected Areas in Communications, vol. 38, no. 8, pp. 1735-1748, August 2020. 
♠ Q. Wu and R. Zhang, “Weighted sum power maximization for intelligent reflecting surface aided SWIPT,” IEEE Wireless Communications Letters, vol. 9, no. 5, pp. 586-590, May 2020.

  ♦ IRS-aided Secure Communication:  
   

♠ M. Zhao, Y. Cai, and R. Zhang, “Intelligent reflecting surface aided wireless information surveillance,” IEEE Transactions on Wireless Communications.
♠ X. Guan, Q. Wu, and R. Zhang, “Intelligent reflecting surface assisted secrecy communication: is artificial noise helpful or not?” IEEE Wireless Communications Letters, vol. 9, no. 6, pp. 778-782, June 2020.
♠ M. Cui, G. Zhang, and R. Zhang, “Secure wireless communication via intelligent reflecting surface,” IEEE Wireless Communications Letters, vol. 8, no. 5, pp. 1410-1414, October 2019.
  ♦ IRS Meets UAV:  
   

♠ X. Pang, W. Mei, N. Zhao, and R. Zhang, “Intelligent reflecting surface assisted interference mitigation for cellular-connected UAV,” IEEE Wireless Communications Letters.
♠ C. You, Z. Kang, Y. Zeng, and R. Zhang, “Enabling smart reflection in integrated air-ground wireless network: IRS meets UAV,” IEEE Wireless Communications, vol. 28, no. 6, pp. 138-144, December 2021.
♠ H. Lu, Y. Zeng, S. Jin, and R. Zhang, “Aerial intelligent reflecting surface: joint placement and passive beamforming design with 3D beam flattening,” IEEE Transactions on Wireless Communications, vol. 20, no. 7, pp.4128-4143, July 2021.
  ♦ IRS-aided MEC:  
    ♠ F. Zhou, C. You, and R. Zhang, “Delay-optimal scheduling for IRS-aided mobile edge computing,” IEEE Wireless Communications Letters, vol. 10, no. 4, pp. 740-744, April 2021.  
  ♦ IRS-aided High-Mobility Communication:  
    ♠ Z. Huang, B. Zheng, and R. Zhang, “Transforming fading channel from fast to slow: intelligent refracting surface aided high-mobility communication,” IEEE Transactions on Wireless Communication
  ♦ IRS-aided Backscatter Communication:  
    ♠ S. Abeywickrama, C. You, R. Zhang, and C. Yuen, “Channel estimation for intelligent reflecting surface assisted backscatter communication,” IEEE Wireless Communications Letters, vol. 10, no. 11, pp. 2519-2523, November 2021.
  ♦ IRS-aided FD Communication:  
    ♠ Y. Cai, M. Zhao, K. Xu, and R. Zhang, “Intelligent reflecting surface aided full-duplex communication: passive beamforming and deployment design,” IEEE Transactions on Wireless Communications, vol. 21, no. 1, pp. 383-397, January 2022.
  ♦ IRS-aided sensing:  
   

♠ X. Shao, C. You, W. Ma, X. Chen, and R. Zhang, “Target sensing with intelligent reflecting surface: architecture and performance,” IEEE Journal on Selected Areas in Communications, special issue on Integrated Sensing and Communication.
♠ S. Lin, B. Zheng, F. Chen, and R. Zhang, “Intelligent reflecting surface-aided spectrum sensing for cognitive radio,” IEEE Wireless Communications Letters, vol. 11, no. 5, pp. 928-932, May 2022.