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    METHOD AND APPARATUS FOR RECOVERING OPTICAL CHANNEL TRANSPORT UNIT K FRAME, AND SYSTEM FOR TRANSMITTING OPTICAL CHANNEL TRANSPORT UNIT K FRAME
    3.
    发明公开
    METHOD AND APPARATUS FOR RECOVERING OPTICAL CHANNEL TRANSPORT UNIT K FRAME, AND SYSTEM FOR TRANSMITTING OPTICAL CHANNEL TRANSPORT UNIT K FRAME 有权
    方法和设备的OTUk一个框架结构FOR A的OTUk帧的传输恢复以及系统

    公开(公告)号：EP2456096A4

    公开(公告)日：2012-10-03

    申请号：EP09847229

    申请日：2009-07-17

    申请人： HUAWEI TECH CO LTD

    发明人： ZENG LI ,  ZHAO CHAN ,  XIE CHANGSONG

    IPC分类号： H04B10/00 ,  H04J3/16

    CPC分类号： H04J3/14 ,  H04B10/614 ,  H04B10/616 ,  H04J3/1652

    摘要： A method for recovering an OTUk frame includes: receiving an optical signal sent by using a method of multi-lane distribution from the OTUk frame to an interface of an optical module; converting the optical signal into an electrical signal, performing electrical equalization and demodulation on the electrical signal, and recovering multi-lane data from the demodulated signal; aligning and rearranging the data on each lane, according to a lane sequence identifier included in an overhead frame header of the data on each lane; and recovering the OTUk frame according to the aligned and rearranged data. According to the present invention, lane rearrangement is performed by detecting the lane sequence identifier, and the recovery of the OTUk frame is achieved. Therefore, a training sequence overhead does not need to be additionally introduced, and the influence on the system performance is avoided.

    METHOD FOR CARRIER FREQUENCY RECOVERY AND OPTICAL INTRADYNE COHERENT RECEIVER
    4.
    发明公开
    METHOD FOR CARRIER FREQUENCY RECOVERY AND OPTICAL INTRADYNE COHERENT RECEIVER 有权
    VERFAHRENFÜRTRÄGERQUENZWIEDERHERSTELLUNGUND OPTISCHERKOHÄRENTERINTRADYN-EMPFÄNGER

    公开(公告)号：EP2436127A4

    公开(公告)日：2012-08-15

    申请号：EP09845989

    申请日：2009-06-17

    申请人： HUAWEI TECH CO LTD

    发明人： XIE CHANGSONG

    IPC分类号： H04B10/60 ,  H04B10/61

    CPC分类号： H04B10/6161 ,  H04B10/60 ,  H04B10/611 ,  H04B10/6162 ,  H04B10/6164

    摘要： A method for carrier frequency recovery in an optical coherent transmission system is provided in which at least one kind of equalization of a received signal is performed in frequency domain, the method comprising: performing a frequency offset compensation in frequency domain on a received signal according to an estimated value of the frequency offset; obtaining the signal with the frequency offset compensated. Further, an optical coherent receiver is provided comprising: an equalization unit, adapted to perform at least one kind of optical distortion compensation of a received signal in frequency domain; a frequency offset compensation unit, adapted to perform the frequency offset compensation in frequency domain on a received signal according to an estimated value of the frequency offset to obtain the signal with frequency offset compensated.

    摘要翻译： 提供了一种在光学相干传输系统中进行载波频率恢复的方法，其中在频域中执行接收信号的至少一种均衡，所述方法包括：根据接收到的信号对频域执行频偏补偿 频率偏移的估计值; 获得频率偏移补偿的信号。 此外，提供了一种光学相干接收机，包括：均衡单元，适于对频域中的接收信号执行至少一种光学失真补偿; 频率偏移补偿单元，适于根据频率偏移的估计值对接收信号在频域执行频偏补偿，以获得频偏补偿的信号。