Title:
PHASE NOISE ESTIMATION METHOD AND APPARATUS
Document Type and Number:
WIPO Patent Application WO/2022/022521
Kind Code:
A1
Abstract:
Provided are a phase noise estimation method and apparatus. The method comprises: firstly, receiving an analog waveform signal which comes from a sending end and has been affected by phase noise; performing demodulation processing on the analog waveform signal to obtain a time-frequency signal corresponding to the analog waveform signal; and after the time-frequency signal corresponding to the analog waveform signal is obtained, constructing a cyclic matrix according to a phase noise estimation order P and the number of sub-carriers, such that the cyclic matrix can be used to estimate inter-carrier interference caused by the phase noise, thereby estimating the inter-carrier interference caused by the phase noise. In addition, since the elements of a cyclic matrix comprise a phase tracking reference signal (PTRS) and user data, when the cyclic matrix is used to estimate inter-carrier interference caused by phase noise, the accuracy of inter-carrier interference estimation can be improved to a certain extent.
Inventors:
LI FENG (CN)
DU HENG (CN)
XUE JIANG (CN)
MENG DEYU (CN)
DUAN QIHONG (CN)
MEI YUAN (CN)
DU HENG (CN)
XUE JIANG (CN)
MENG DEYU (CN)
DUAN QIHONG (CN)
MEI YUAN (CN)
Application Number:
PCT/CN2021/108706
Publication Date:
February 03, 2022
Filing Date:
July 27, 2021
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H04L25/03
Foreign References:
| US20110090975A1 | 2011-04-21 | |||
| CN109257080A | 2019-01-22 | |||
| CN102130879A | 2011-07-20 | |||
| US20180132122A1 | 2018-05-10 |
Attorney, Agent or Firm:
LEADER PATENT & TRADEMARK FIRM (CN)
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