3 papers
cs.IT2025
Sharing Intelligent Reflecting Surfaces in Multi-Operator Communication Systems for Sustainable 6G Networks
Hiroaki Hashida, Yuichi Kawamoto, Nei Kato
In this study, we investigate the use of intelligent reflecting surfaces (IRSs) in multi-operator communication systems for 6G networks, focusing on sustainable and efficient resou…
cs.IT2025
Precoding-free Hierarchical Rate-Splitting Multiple Access via Stacked Intelligent Metasurface
Hiroaki Hashida, Boya Di
Interference management is a central bottleneck in dense multi-antenna wireless networks. Therefore, in this study, we present a digital precoding-free hierarchical rate-splitting…
cs.NI2024
IRS-aided Near-field Communication: Prospects and Challenges with Codebook Approach
Ryuhei Hibi, Hiroaki Hashida, Yuichi Kawamoto +1
Intelligent reflecting surfaces (IRSs) are gaining attention as a low-cost solution to the coverage reduction in high-frequency bands used in next-generation communications. IRSs a…