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1. (WO2018040011) CLOCK RECOVERY APPARATUS AND CLOCK RECOVERY METHOD

Pub. No.:    WO/2018/040011    International Application No.:    PCT/CN2016/097648
Publication Date: Fri Mar 09 00:59:59 CET 2018 International Filing Date: Thu Sep 01 01:59:59 CEST 2016
IPC: H04L 7/033
Applicants: HUAWEI TECHNOLOGIES CO., LTD.
华为技术有限公司
Inventors: WAN, Wentong
万文通
YAN, Min
颜敏
Title: CLOCK RECOVERY APPARATUS AND CLOCK RECOVERY METHOD
Abstract:
A clock recovery apparatus (300) and a clock recovery method. In the clock recovery apparatus (300), a signal clock compensator (301) is configured to adjust clock phases of a first signal and a second signal in the frequency domain according to a parameter B and a parameter C, and output the first signal and the second signal; a signal adjuster (302) is configured to adjust, according to a parameter A, polarization angles of the first signal and the second signal for which the clock phases have been adjusted, and determine target positive spectrum information and target negative spectrum information; a phase discriminator (303) is configured to determine a clock error signal according to the target positive and negative spectrum information; a loop filter (304) is configured to filter the clock error signal, and further configured to lead out a signal from an integration branch of the loop filter (304) as a monitored signal; an interpolation controller (305) is configured to determine the parameter B according to the filtered clock error signal; and a signal characteristic parameter modifier (306) is configured to determine whether the monitored signal is within a preset fluctuation range, and if not, adjust the parameter A and the parameter C so that the monitored signal is within the preset fluctuation range.