发明名称 |
METHOD AND SYSTEM FOR COHERENT EQUALIZATION OF CHROMATIC DISPERSION OF OPTICAL SIGNALS IN A FIBER |
摘要 |
Method and system for optimally equalizing distortion of an optical data channel carrying coherent optical signals with a given analog bandwidth B. A receiving end with IQ paths receives signals and a balanced detector detects signals in each path. The bandwidth of the detected signals is reduced by a factor of N by filtering the output of each path using an AAF with a cutoff frequency optimized to the analog bandwidth 2B/N of each path, where the AAF has deterministic attributes and introducing Known ISI. The signal is sampled at the AAF output by an ADC, at a sampling rate of 2B/N. The samples of each path are post-processed by a digital processor operating at a data rate of 2B/N, where post-processing represents the compensation of the distortion and the input data stream is reconstructed by optimally decoding the output of the processor using a decoder, which compensates the ISI. |
申请公布号 |
EP2514093(A4) |
申请公布日期 |
2015.09.02 |
申请号 |
EP20100837158 |
申请日期 |
2010.12.13 |
申请人 |
MULTIPHY LTD. |
发明人 |
SADOT, DAN;KATZ, GILAD;GORSHTEIN, ALIK;LEVY, OMRI |
分类号 |
H03H7/30;H04B10/61 |
主分类号 |
H03H7/30 |
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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