Y. Liu, X. Liu, X. Mu, T. Hou, J. Xu, M. Di Renzo, and N. Al-Dhahir, “Reconfigurable Intelligent Surfaces: Principles and Opportunities,” IEEE Commun. Surv. Tutor., vol. 23, no. 3, pp. 1546–1577, 2021.
W. U. Khan, M. Ahmed, C. K. Sheemar, M. Di Renzo, E. Lagunas, A. Mahmood, S. T. Shah, O. A. Dobre, J. Querol, and S. Chatzinotas, “Survey on Beyond Diagonal RIS Enabled 6G Wireless Networks: Fundamentals, Recent Advances, and Challenges,” arXiv preprint arXiv:2503.08423, 2025.
H. Li, S. Shen, and B. Clerckx, “Beyond Diagonal Reconfigurable Intelligent Surfaces: From Transmitting and Reflecting Modes to Single-, Group-, and Fully-Connected Architectures,” IEEE Trans. Wireless Commun., vol. 22, no. 4, pp. 2311–2324, 2022.
H. Li, M. Nerini, S. Shen, and B. Clerckx, “A Tutorial on Beyond-Diagonal Reconfigurable Intelligent Surfaces: Modeling, Architectures, System Design and Optimization, and Applications,” 2025. [Online]. Available: https://arxiv.org/abs/2505.16504
E. Björnson and O. T. Demir, “Capacity Maximization for MIMO Channels Assisted by Beyond-Diagonal RIS,” in 2025 19th European Conference on Antennas and Propagation (EuCAP), 2025, pp. 1–5.
I. Santamaria, M. Soleymani, E. Jorswieck, and J. Gutiérrez, “MIMO Capacity Maximization with Beyond-Diagonal RIS,” in 2024 IEEE 25th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC), 2024, pp. 936–940.
T. Fang and Y. Mao, “A Low-Complexity Beamforming Design for Beyond-Diagonal RIS Aided Multi-User Networks,” IEEE Commun. Lett., vol. 28, no. 1, pp. 203–207, 2024.
H. Yahya, H. Li, M. Nerini, B. Clerckx, and M. Debbah, “Beyond Diagonal RIS: Passive Maximum Ratio Transmission and Interference Nulling Enabler,” IEEE Open J. Commun. Soc., vol. 5, pp. 7613–7627, 2024.
A. L. de Almeida, B. Sokal, H. Li, and B. Clerckx, “Channel estimation for beyond diagonal ris via tensor decomposition,” IEEE Transactions on Signal Processing, 2025.
J. Tapie, M. Nerini, B. Clerckx, and P. del Hougne, “Beyond-diagonal ris prototype and performance evaluation,” arXiv preprint arXiv:2505.13392, 2025.
H. Xie, J. Xu, and Y.-F. Liu, “Max-Min Fairness in IRS-Aided Multi-Cell MISO Systems With Joint Transmit and Reflective Beamforming,” IEEE Trans. Wireless Commun., vol. 20, no. 2, pp. 1379–1393, 2021.
C. K. Sheemar, C. K. Thomas, and D. Slock, “Practical Hybrid Beamforming for Millimeter Wave Massive MIMO Full Duplex With Limited Dynamic Range,” IEEE Open J. Commun. Soc., vol. 3, pp. 127–143, 2022.
S. S. Christensen, R. Agarwal, E. De Carvalho, and J. M. Cioffi, “Weighted sum-rate maximization using weighted MMSE for MIMO-BC beamforming design,” IEEE Trans. Wireless Commun., vol. 7, no. 12, pp. 4792–4799, 2008.