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    • 33. 发明申请
    • DIGITAL COHERENT DETECTION OF MULTI-CARRIER OPTICAL SIGNAL
    • 多载波光信号的数字相关检测
    • WO2011037806A1
    • 2011-03-31
    • PCT/US2010/049019
    • 2010-09-16
    • ALCATEL-LUCENT USA INC.LIU, XiangSETHUMADHAVAN, ChandrasekharTKACH, Robert, William
    • LIU, XiangSETHUMADHAVAN, ChandrasekharTKACH, Robert, William
    • H04B10/148H04B10/158H04J14/02
    • H04B10/675H04B10/61H04B10/614H04B10/6161H04B10/6165
    • Embodiments for optical communication are provided in which subbands of a multi- carrier optical signal are digital coherent detected and then processed to recover data carried by the modulated carriers corresponding to at least one of the subbands. An exemplary optical communication system includes a multi-carrier coherent optical receiver for receiving a multi-carrier optical signal having M modulated carriers that are frequency locked, wherein M is greater than 2. The multi-carrier coherent optical receiver includes a subband digital coherent detector configured to provide output signals in a digital form for N different subbands of the multi-carrier optical signal, where N is an integer greater than 1 and less than M; and a digital signal processor configured to process the digital form of the detected output signals in order to recover the data carried by the modulated carriers corresponding to at least one of the subbands of the multicarrier optical signal.
    • 提供了用于光通信的实施例,其中多载波光信号的子带被数字相干检测,然后被处理以恢复由至少一个子带对应的调制载波承载的数据。 示例性光通信系统包括多载波相干光接收机,用于接收具有频率锁定的M个调制载波的多载波光信号,其中M大于2.多载波相干光接收机包括子带数字相干检测器 被配置为为多载波光信号的N个不同子带提供数字形式的输出信号,其中N是大于1且小于M的整数; 以及数字信号处理器,被配置为处理检测到的输出信号的数字形式,以便恢复与多载波光信号的至少一个子带对应的调制载波承载的数据。