Title:
PRECODING METHOD AND APPARATUS
Document Type and Number:
WIPO Patent Application WO/2020/259138
Kind Code:
A1
Abstract:
The present application relates to the technical field of communications, and provides a precoding method and apparatus, capable of improving the power utilization of antennas. The method comprises: in the m-th iteration of J iterative operations, determining a generalized inverse matrix Hm
+ of a channel value matrix H m of K users, m=1, 2,..., 1≤J≤M-K+1, J being an integer, and M being the number of antennas; selecting an antenna index n m and an update coefficient α m corresponding to n m from a set S1 m-1 according to Hm
+, S1 m-1 being a set of unselected n in the antenna index n of M antennas until the (m-1)-th iteration is finished; determining a weight matrix W m according to Hm
+ and α m; and assigning a row in W m corresponding to n m to a row in a final weight matrix W opt corresponding to n m, W opt being used for regulating the transmitted power of at least J antennas in the M antennas to the preset maximum transmitted power P after the J iterative operations are finished.
Inventors:
GUO SENBAO (CN)
LI GUIBAO (CN)
WANG ZHIYING (CN)
LI GUIBAO (CN)
WANG ZHIYING (CN)
Application Number:
PCT/CN2020/091271
Publication Date:
December 30, 2020
Filing Date:
May 20, 2020
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H04B7/0426
Foreign References:
| CN103582101A | 2014-02-12 | |||
| CN108683440A | 2018-10-19 | |||
| CN105430734A | 2016-03-23 | |||
| US20180288709A1 | 2018-10-04 | |||
| CN201910567028A | 2019-06-27 |
Other References:
NORTEL: "Differential Codebook for LTE Downlink Closed-Loop MIMO", 3GPP TSG-RAN WORKING GROUP 1 MEETING #47BIS R1-070458, 19 January 2007 (2007-01-19), XP050104489, DOI: 20200806170407A
See also references of EP 3958473A4
See also references of EP 3958473A4
Attorney, Agent or Firm:
CHINABLE IP (CN)
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