公开(公告)号：US11005548B2

公开(公告)日：2021-05-11

申请号：US16564938

申请日：2019-09-09

Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

Inventor： Jia-Ming Chen ,  Hung-Fu Wei ,  Jyun-Wei Lai ,  Jen-Yuan Hsu

IPC: H04B7/02 ,  H04B7/06 ,  H04B7/0408 ,  H04B7/024 ,  H04L25/02

Abstract: A multi-antenna system includes: a server; a first antenna group, provided on a base station and including multiple first antennas including a first representative antenna and a first non-representative antenna, the base station performing intra-group channel estimation to obtain and transmit to the server multiple first inner channel estimation coefficients between the first representative antenna and the first non-representative antenna, and serving a user device; and a reference device, communicating with the server and the first antennas, performing channel estimation between the reference device and the first representative antenna to obtain and transmit to the server multiple first outer channel estimation coefficients between the reference device and the first representative antenna. The server calculates a precoding matrix according to the first inner and first outer channel estimation coefficients, and the base station performs data transmission with the user device according to the precoding matrix.