Group-Connected Non-Diagonal RIS: An Energy Efficiency Analysis. - Mostafa Samy; Hayder Al-Hraishawi; Madyan Alsenwi; Abuzar B. M. Adam; Symeon Chatzinotas; Björn Ottersten (IEEE Wirel. Commun. Lett., 2025)

Low-Complexity Channel Estimation Protocol for Non-Diagonal RIS-Assisted Communications. - Mostafa Samy; Hayder Al-Hraishawi; Abuzar B. M. Adam; Madyan Alsenwi; Symeon Chatzinotas; Björn Ottersten (IEEE Trans. Veh. Technol., 2025)