发明名称 CYCLE SLIP REDUCTION IN COHERENT OPTICAL COMMUNICATIONS
摘要 Carrier phase estimation techniques are provided for processing a received optical signal having a carrier modulated according to a modulation scheme. First and second carrier phase estimation operations are performed on a digital signal derived from an optical carrier obtained from the received optical signal using coherent optical reception. The first carrier phase estimation operation tracks relatively fast phase variations of the optical carrier of the received optical signal to produce a first carrier phase estimation and the second carrier phase estimation operation tracks relatively slow phase variations of the optical carrier of the received optical signal to produce a second carrier phase estimation. A difference between the first and second carrier phase estimations is computed. Occurrence of a cycle slip is determined when the difference is greater than a threshold. A correction is applied to the first carrier phase estimation when the low pass filtered difference exceeds the threshold.
申请公布号 WO2013184325(A1) 申请公布日期 2013.12.12
申请号 WO2013US41497 申请日期 2013.05.17
申请人 CISCO TECHNOLOGY, INC. 发明人 GEYER, JONAS;BISPLINGHOFF, ANDREAS;KUPFER, THEODOR
分类号 H04B10/61 主分类号 H04B10/61
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