公开(公告)号：US20200228175A1

公开(公告)日：2020-07-16

申请号：US16745516

申请日：2020-01-17

Applicant: Apple Inc.

Inventor： Wen TONG ,  Ming JIA ,  Jianglei MA ,  Peiying ZHU ,  Hua XU ,  Dong-Sheng YU ,  Hang ZHANG ,  Mo-Han FONG

IPC: H04B7/0456 ,  H04B7/06 ,  H04L5/00 ,  H04W48/08 ,  H04B7/0413 ,  H04W72/04 ,  H04W72/08 ,  H04W74/06 ,  H04L5/02

Abstract: Systems and methods for closed loop MIMO (multiple input and multiple output) wireless communication are provided. Various transmit formats including spatial multiplexing and STTD are defined in which vector or matrix weighting is employed using information fed back from receivers. The feedback information may include channel matrix or SVD-based feedback.