MAXIMUM LIKELIHOOD SEQUENCE ESTIMATION FOR HIGH SP

专利名称：MAXIMUM LIKELIHOOD SEQUENCE

ESTIMATION FOR HIGH SPECTRALEFFICIENCY OPTICAL COMMUNICATIONSYSTEMS

发明人：Rene-Jean Essiambre,Michael

Rubsamen,Peter Winzer

申请号：US11306177申请日：20051219

公开号：US20080199191A1公开日：20080821

专利附图：

摘要：Severe inter-symbol interference (ISI), introduced by narrow-band opticalfiltering in high spectral efficiency wavelength-division multiplexed (WDM) systems toavoid coherent WDM crosstalk, can be substantially mitigated by the use of maximum-likelihood sequence estimation (MLSE) reception. Compared to conventional thresholddetection, the use of an MLSE receiver allows, for example, a 22% reduction in opticalreceive filter bandwidth. For tight optical filtering, the MLSE receiver benefits from takinginto account noise correlation. MLSE receivers with one and with two samples per bit aredescribed and it is shown that while oversampling is beneficial for wide-band opticalfilters, the benefit goes away for narrow-band optical filtering, thereby facilitating MLSEdesign for rates beyond 10 Gb/s.

申请人：Rene-Jean Essiambre,Michael Rubsamen,Peter Winzer

地址：Red Bank NJ US,Aachen DE,Aberdeen NJ US

国籍：US,DE,US

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