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    • 2. 发明申请
    • APPARATUS AND METHOD FOR MONITORING STATISTICAL CHARACTERISTICS OF PHASE NOISES, AND COHERENT OPTICAL COMMUNICATION RECEIVER
    • 用于监测相位噪声统计特性的装置和方法以及相关光通信接收机
    • WO2010060245A1
    • 2010-06-03
    • PCT/CN2008/073245
    • 2008-11-28
    • FUJITSU LIMITEDYAN, WeizhenTAO, ZhenningODA, Shoichiro
    • YAN, WeizhenTAO, ZhenningODA, Shoichiro
    • H04J14/02
    • H04J14/02H04B10/60H04B10/611H04B10/6163
    • This invention relates to an apparatus and a method for monitoring statistical characteristics of phase noises, as well as to a coherent optical communication receiver. The apparatus for monitoring statistical 5 characteristics of phase noises comprises an argument calculating unit (203), for obtaining an argument of a signal input thereto; an unwrapping unit (204), for unwrapping the argument obtained by the argument calculating unit (203) to obtain a phase signal (205); a delaying unit (207), for delaying the phase signal; a differentiating unit (209), for obtaining a difference between a phase 10 signal currently obtained by the unwrapping unit (204) and a phase signal delayed by the delaying unit (207); a modulus squaring unit (210), for obtaining a square of the modulus of the difference; and an averaging unit (211), for averaging squares of moduli of a plurality of differences obtained by the modulus squaring unit (210) to obtain a mean-squared differential phase 15 (MSDP) value.
    • 本发明涉及一种用于监测相位噪声的统计特性以及相干光通信接收机的装置和方法。 用于监视相位噪声的统计特性的装置包括:一个参数计算单元,用于获得输入到其中的信号的自变量; 一个展开单元(204),用于展开由参数计算单元(203)获得的参数以获得相位信号(205); 延迟单元(207),用于延迟所述相位信号; 差分单元(209),用于获得由解包单元(204)当前获得的相位10信号与延迟单元(207)延迟的相位信号之间的差; 模数平方单元(210),用于获得所述差的模数的平方; 以及平均单元(211),用于对通过所述模量平方单元(210)获得的多个差的模量的平均值进行平均,以获得均方差分相位15(MSDP)值。