公开(公告)号：US20230208025A1

公开(公告)日：2023-06-29

申请号：US18086276

申请日：2022-12-21

Applicant: Electronics and Telecommunications Research Institute

Inventor： Young Seog SONG ,  Eun Young CHOI ,  Song NOH ,  Kyung Sik SEO

IPC: H01Q3/16 ,  H04B7/06

CPC classification number: H01Q3/16 ,  H04B7/0617 ,  H04B7/0634

Abstract: A method of estimating a channel of a base station in a communication system using an IRS may comprise: receiving a first signal through a direct path between a terminal and the base station from the terminal and a second signal through an indirect path through the IRS from the terminal; estimating a first angle of arrival of the second signal received from the IRS; estimating a second angle of arrival of a signal transmitted to the IRS by the terminal based on the estimated first angle of arrival; estimating a third angle of arrival of the first signal received from the terminal based on the estimated first angle of arrival; and estimating path gains on the direct path and the indirect path based on the estimated first angle of arrival to the estimated third angle of arrival.