公开(公告)号：US20230198605A1

公开(公告)日：2023-06-22

申请号：US17996264

申请日：2021-06-11

Applicant: ARIZONA BOARD OF REGENTS ON BEHALF OF ARIZONA STATE UNIVERSITY

Inventor： Ahmed ALKHATEEB ,  Umut DEMIRHAN ,  Xiaoyan YING

IPC: H04B7/155 ,  H04B7/06 ,  H01Q15/14 ,  H01Q19/10 ,  H01Q19/18

CPC classification number: H04B7/15507 ,  H04B7/0617 ,  H01Q15/14 ,  H01Q19/104 ,  H01Q19/18

Abstract: Relay-aided intelligent reconfigurable surfaces (IRSs) are provided. A novel relay-aided intelligent surface architecture is described herein that has the potential of achieving the promising gains of IRSs with a much smaller number of elements, opening the door for realizing these surfaces in practice. A half-duplex or full-duplex relay is connected to one or more IRSs. This merges the gains of relays and reconfigurable surfaces and splits the required signal-to-noise ratio (SNR) gain between them. This architecture can hen significantly reduce the required number of reconfigurable elements in the IRS(s) while achieving the same spectral efficiencies. Consequently, the proposed relay-aided intelligent surface architecture needs far less channel estimation/beam training overhead and provides enhanced robustness compared to traditional IRS solutions.