公开(公告)号：US11239887B2

公开(公告)日：2022-02-01

申请号：US16082527

申请日：2017-02-27

Applicant: CHINA ACADEMY OF TELECOMMUNICATIIONS TECHNOLOGY

Inventor： Qiubin Gao ,  Shanzhi Chen ,  Wenhong Chen ,  Runhua Chen ,  Hui Li ,  Rakesh Tamrakar ,  Shaohui Sun

IPC: H04B7/0456 ,  H04L5/00 ,  H04B7/04 ,  H04L25/02 ,  H04B7/06

Abstract: A data transmission method and a data transmission device are provided. The data transmission method includes steps of: determining, by a transmitting end, a first precoding matrix and a second precoding matrix, the first precoding matrix being selected from a predefined first codebook, the second precoding matrix being acquired on the basis of CSI; performing, by the transmitting end, precoding processing on a data stream in accordance with the first precoding matrix and the second precoding matrix; and transmitting, by the transmitting end, the data streamed acquired after the precoding processing to a receiving end.