Title:
OPTICAL RECEIVER AND DELAY ESTIMATION METHOD
Document Type and Number:
WIPO Patent Application WO/2018/195722
Kind Code:
A1
Abstract:
An optical receiver and a delay estimation method. The optical receiver comprises: an analogue signal processor for carrying out photoelectric conversion processing on a received optical signal so as to obtain an electrical signal; a digital signal processor for carrying out time-frequency transform processing on the electrical signal so as to obtain a frequency domain signal; a delay estimator for acquiring, according to the frequency domain signal, a first sub-frequency domain signal of a co-phase component of the optical signal and a second sub-frequency domain signal of an orthogonal component of the optical signal, and according to the first sub-frequency domain signal and the second sub-frequency domain signal, calculating the phase difference between the co-phase component and the orthogonal component; and a delay compensator for using the phase difference to carry out delay compensation on the optical signal.
Inventors:
LU YANZHAO (CN)
LI LIANGCHUAN (CN)
LI LIANGCHUAN (CN)
Application Number:
PCT/CN2017/081706
Publication Date:
November 01, 2018
Filing Date:
April 24, 2017
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H04B10/00
Foreign References:
| CN101610114A | 2009-12-23 | |||
| EP1959590A2 | 2008-08-20 |
Attorney, Agent or Firm:
TDIP & PARTNERS (CN)
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