发明名称 |
Digital coherent receiver and phase control method |
摘要 |
A digital coherent receiver includes a sampling phase detector to detect a phase of a sampled digital signal, and a phase adjustor to adjust the sampling phase of the digital signal based upon the detected phase. The phase detector includes filters to equalize the digital signal with different equalization characteristics; sensitivity monitoring phase detectors, each connected to one of the filters and outputting a phase detection signal representing the phase of the output signal from the associated filter together with a sensitivity monitoring signal representing the sensitivity of the phase detection; sensitivity correction coefficient generators, each generating a sensitivity correction coefficient for correcting the associated phase detection signal using a square sum of the sensitivity monitoring signals; and an adder to add the phase detection signals that have been corrected by the sensitivity correction coefficients, and output a phase signal. |
申请公布号 |
EP2530856(B1) |
申请公布日期 |
2017.03.22 |
申请号 |
EP20120163880 |
申请日期 |
2012.04.12 |
申请人 |
FUJITSU LIMITED |
发明人 |
Komaki, Kosuke;Nakashima, Hisao |
分类号 |
H04B10/2507;H04B10/2569;H04B10/69;H04L7/00;H04L7/033 |
主分类号 |
H04B10/2507 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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