Title:
PHASE NOISE ESTIMATION METHOD AND DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/004566
Kind Code:
A1
Abstract:
The present application relates to the technical field of communications, and provides a phase noise estimation method and device, for use in improving the accuracy of phase noise estimation. The phase noise estimation method provided in the present application comprises: obtaining a pilot signal and a data signal from a received signal; filtering the pilot signal to obtain a pilot filtered signal, and comparing the pilot filtered signal with a theoretical pilot signal to obtain a pilot phase noise value; respectively performing forward filtering and backward filtering on the data signal to obtain a forward filtered signal and a backward filtered signal, and respectively determining a first phase noise value of the forward filtered signal and a second phase noise value of the backward filtered signal according to the pilot phase noise value; compensating the data signal according to the first phase noise value to obtain a first compensation signal; compensating the data signal according to the second phase noise value to obtain a second compensation signal; and selecting a compensation signal from the first compensation signal and the second compensation signal as a demodulation signal of the received signal.
Inventors:
LYU RUI (CN)
Application Number:
PCT/CN2021/108580
Publication Date:
February 02, 2023
Filing Date:
July 27, 2021
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H04L25/03; H04B10/61; H04L27/18
Foreign References:
| CN103095615A | 2013-05-08 | |||
| US20150098535A1 | 2015-04-09 | |||
| CN107395282A | 2017-11-24 | |||
| US20190245569A1 | 2019-08-08 | |||
| CN109600332A | 2019-04-09 |
Other References:
ZHANG QINGQING, ZHANG PING; LU JIN; REN HONGLIANG; GUO SHUQIN; QIN YALI; HU WEISHENG: "Joint Phase Noise Compensation Algorithm Using RF-Pilot and Extended Kalman Filter in CO-OFDM Systems", ACTA OPTICA SINICA, vol. 38, no. 9, 4 May 2018 (2018-05-04), pages 108 - 117, XP093029247, DOI: 10.3788/AOS201838.0906006
Attorney, Agent or Firm:
BEIJING ZBSD PATENT & TRADEMARK AGENT LTD. (CN)
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