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cs.IT2026
Multi-User MIMO with Rotatable Antennas and IRS: Joint Antenna Boresight and IRS Orientation Design
Guoying Zhang, Qingqing Wu, Ziyuan Zheng +5
In this paper, we investigate an intelligent reflecting surface (IRS)-assisted multi-user system, where the base station (BS) employs rotatable antennas (RAs) and the IRS can adjus…
cs.IT2026
Fluid RIS (FRIS)-Assisted Index Modulation for 6G Wireless Communications
Xusheng Zhu, Kai-Kit Wong, Sai Xu +3
Fluid reconfigurable intelligent surfaces (FRIS) extend conventional reconfigurable intelligent surfaces (RIS) by adding spatial reconfigurability through switchable apertures, pat…
cs.IT2025
Joint Space Time Coding on RIS for Simultaneous Direct Modulation and Beamforming
Shiyuan Li, Baojiang Yan, Yihan Xie +5
Reconfigurable Intelligent Surface (RIS)-based direct modulation communication systems have garnered significant attention due to their low cost, low power consumption, and baseban…