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    • 1. 发明申请
    • COHERENT PHASE-SHIFT-KEYING
    • 相关相移键控
    • WO2007021569A1
    • 2007-02-22
    • PCT/US2006/030322
    • 2006-08-02
    • LUCENT TECHNOLOGIES INC.CHEN, Young-kaiKOC, Ut-VaLEVEN, Andreas, Bertold
    • CHEN, Young-kaiKOC, Ut-VaLEVEN, Andreas, Bertold
    • H04L27/223H04B10/60H04B10/6164H04B10/6165H04B10/63H04L27/227H04L2027/003
    • A receiver for coherent detection of a PSK modulated optical carrier includes an optical detector, digital-to-analog converters, and a digital module. The optical detector is configured to mix the modulated optical carrier with two phase components of a reference optical carrier and to produce analog output signals representative of optical signals produced by said mixing. The digital-to-analog converters are connected to receive the analog output signals and to produce digital signals from the received analog output signals. The digital module is connected to receive the digital signals and to perform one of compensating the received digital signals for a conjugate phase misalignment between the mixed components, extracting phase of the received digital signals, and estimating a frequency offset between the two carriers from the received digital signals.
    • 用于PSK调制光载波的相干检测的接收机包括光检测器,数模转换器和数字模块。 光学检测器被配置为将调制光载波与参考光载波的两相分量进行混合,并产生代表由所述混频产生的光信号的模拟输出信号。 数模转换器被连接以接收模拟输出信号并从接收到的模拟输出信号产生数字信号。 数字模块被连接以接收数字信号,并且执行补偿接收的数字信号之一用于混合分量之间的共轭相位失准,提取接收的数字信号的相位,以及从接收到的两个载波之间估计频率偏移 数字信号。