Title:
METHOD AND APPARATUS FOR DETERMINING CHANNEL STATISTICAL COVARIANCE
Document Type and Number:
WIPO Patent Application WO/2023/011075
Kind Code:
A1
Abstract:
The present application relates to the technical field of communications, and provides a method and apparatus for determining a channel statistical covariance to accurately determine a statistical covariance of a channel. A network device performs channel estimation on the basis of the received uplink reference signal to obtain an uplink channel estimation matrix. Then, the uplink channel estimation matrix is transformed on the basis of a first transformation matrix to obtain a first channel estimation matrix, and the first transformation matrix is related to an uplink channel. A first statistical average energy corresponding to the first channel estimation matrix is determined, wherein the first statistical average energy is obtained by performing statistical averaging on energy corresponding to some or all elements in the first channel estimation matrix. Next, a first power spectrum is determined on the basis of the first statistical average energy, wherein a mapping relationship exists between the first statistical average energy and the first power spectrum. A statistical covariance matrix of a downlink channel is determined on the basis of the first power spectrum and a second transformation matrix. The second transformation matrix is related to the downlink channel.
Inventors:
MENG XIN (CN)
YAN GUANWEN (CN)
LAN RUINING (CN)
QIN CHENXIANG (CN)
YANG YE (CN)
YAN GUANWEN (CN)
LAN RUINING (CN)
QIN CHENXIANG (CN)
YANG YE (CN)
Application Number:
PCT/CN2022/103404
Publication Date:
February 09, 2023
Filing Date:
July 01, 2022
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H04L25/02
Foreign References:
| CN107733549A | 2018-02-23 | |||
| CN105577582A | 2016-05-11 | |||
| US20200373984A1 | 2020-11-26 | |||
| US20210126692A1 | 2021-04-29 |
Other References:
XIE, HONGXIANG ET AL.: "Channel Estimation for TDD/FDD Massive MIMO Systems With Channel Covariance Computing.", IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, vol. 17, no. 6, 30 June 2018 (2018-06-30), XP055527208, DOI: 10.1109/TWC.2018.2821667
Attorney, Agent or Firm:
TDIP & PARTNERS (CN)
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