公开(公告)号：US08218614B2

公开(公告)日：2012-07-10

申请号：US13248555

申请日：2011-09-29

申请人： Zihuan Chen ,  Lei Liu ,  Changsong Xie

发明人： Zihuan Chen ,  Lei Liu ,  Changsong Xie

IPC分类号： H04L27/01

CPC分类号： H04L25/03159 ,  H04L27/2626

摘要： Embodiments of the present invention disclose an electronic equalization and electronic depolarization method, a receiving end equipment, and a communication system. According to the embodiments of the present invention, parameters required by electronic equalization and electronic depolarization are calculated by detecting a Synchronization Sequence (SS) in a received signal, and then the electronic equalization and the electronic depolarization are performed on the received signal in a frequency domain by utilizing the parameters, so as to solve a problem of the electronic equalization and the electronic depolarization in a Polarization Division Multiplexing (PDM) Orthogonal Frequency Division Multiplexing (OFDM) system. Furthermore, the realization complexity of the electronic equalization and the electronic depolarization performed in the frequency domain is greatly reduced relative to the electronic equalization and the electronic depolarization performed in a time domain.

摘要翻译： 本发明的实施例公开了电子均衡和电子去极化方法，接收端设备和通信系统。 根据本发明的实施例，通过检测接收信号中的同步序列（SS）来计算电子均衡和电子去极化所需的参数，然后以频率对接收到的信号执行电子均衡和电子去极化 通过利用参数，解决了偏振分复用（PDM）正交频分复用（OFDM）系统中的电子均衡和电子去极化的问题。 此外，相对于在时域中执行的电子均衡和电子去极化，在频域中执行的电子均衡和电子去极化的实现复杂度大大降低。

公开(公告)号：US20120020405A1

公开(公告)日：2012-01-26

申请号：US13248555

申请日：2011-09-29

申请人： Zihuan CHEN ,  Lei Liu ,  Changsong Xie

发明人： Zihuan CHEN ,  Lei Liu ,  Changsong Xie

IPC分类号： H04L27/01

CPC分类号： H04L25/03159 ,  H04L27/2626

摘要： Embodiments of the present invention disclose an electronic equalization and electronic depolarization method, a receiving end equipment, and a communication system. According to the embodiments of the present invention, parameters required by electronic equalization and electronic depolarization are calculated by detecting a Synchronization Sequence (SS) in a received signal, and then the electronic equalization and the electronic depolarization are performed on the received signal in a frequency domain by utilizing the parameters, so as to solve a problem of the electronic equalization and the electronic depolarization in a Polarization Division Multiplexing (PDM) Orthogonal Frequency Division Multiplexing (OFDM) system. Furthermore, the realization complexity of the electronic equalization and the electronic depolarization performed in the frequency domain is greatly reduced relative to the electronic equalization and the electronic depolarization performed in a time domain.

摘要翻译： 本发明的实施例公开了电子均衡和电子去极化方法，接收端设备和通信系统。 根据本发明的实施例，通过检测接收信号中的同步序列（SS）来计算电子均衡和电子去极化所需的参数，然后以频率对接收到的信号执行电子均衡和电子去极化 通过利用参数，解决了偏振分复用（PDM）正交频分复用（OFDM）系统中的电子均衡和电子去极化的问题。 此外，相对于在时域中执行的电子均衡和电子去极化，在频域中执行的电子均衡和电子去极化的实现复杂度大大降低。

公开(公告)号：US09042488B2

公开(公告)日：2015-05-26

申请号：US13593820

申请日：2012-08-24

申请人： Changsong Xie

发明人： Changsong Xie

IPC分类号： H04L27/00 ,  H04L27/227

CPC分类号： H04L27/227 ,  H04L27/0014 ,  H04L2027/0057 ,  H04L2027/0067 ,  H04L2027/0069

摘要： A phase offset compensator for compensating a phase offset is provided. The phase offset includes a first phase sub-offset and a second phase sub-offset. The phase offset compensator includes a feedback loop comprising a first loop filter, the feedback loop being configured to compensate the first phase sub-offset of the phase offset, and a feed forward loop comprising a second loop filter, the feed forward loop being configured to compensate the second phase sub-offset of the phase offset.

摘要翻译： 提供了用于补偿相位偏移的相位偏移补偿器。 相位偏移包括第一相位偏移和第二相位子偏移。 相位偏移补偿器包括反馈环路，该反馈回路包括第一环路滤波器，该反馈回路被配置为补偿相位偏移的第一相位偏移量，以及包括第二环路滤波器的前馈回路，所述前馈回路被配置为 补偿相位偏移的第二相位偏移。

公开(公告)号：US08848747B2

公开(公告)日：2014-09-30

申请号：US13347863

申请日：2012-01-11

申请人： Li Zeng ,  Chan Zhao ,  Changsong Xie

发明人： Li Zeng ,  Chan Zhao ,  Changsong Xie

IPC分类号： H04J3/06 ,  H04J3/14 ,  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.

摘要翻译： 一种用于恢复OTUk帧的方法包括：接收通过使用从OTUk帧到光模块的接口的多通道分配方法发送的光信号; 将光信号转换成电信号，对电信号执行电均衡和解调，以及从解调信号中恢复多通道数据; 根据包括在每个车道上的数据的开销帧头中的车道序列标识符，对每个车道上的数据进行排列和重排; 并根据对齐和重新排列的数据恢复OTUk帧。 根据本发明，通过检测车道序列标识符来执行车道重排，并且实现了OTUk帧的恢复。 因此，不需要额外引入训练序列开销，避免对系统性能的影响。

公开(公告)号：US20120143935A1

公开(公告)日：2012-06-07

申请号：US13339746

申请日：2011-12-29

申请人： Changsong Xie ,  Fabian Nikolaus Hauske

发明人： Changsong Xie ,  Fabian Nikolaus Hauske

IPC分类号： G06F17/10

CPC分类号： H03H17/06 ,  H03H17/0294 ,  H03H2220/08

摘要： The invention relates to a filter device (200) for filtering an input signal (s(t)). The filter device (200) has a plurality of taps (210-216) having a respective filter coefficient (w0-w6) and a plurality of delay elements (221-226), wherein at least two delay elements (221-226) have different delays.

摘要翻译： 本发明涉及一种用于滤波输入信号（s（t））的滤波器装置（200）。 滤波器装置（200）具有多个具有相应滤波器系数（w0-w6）和多个延迟元件（221-226）的抽头（210-216），其中至少两个延迟元件（221-226）具有 不同的延误。

公开(公告)号：US20100128772A1

公开(公告)日：2010-05-27

申请号：US12373614

申请日：2007-07-05

申请人： Fabian Hauske ,  Berthold Lankl ,  Ernst-Dieter Schmidt ,  Changsong Xie

发明人： Fabian Hauske ,  Berthold Lankl ,  Ernst-Dieter Schmidt ,  Changsong Xie

IPC分类号： H04L27/01

CPC分类号： H04L27/223 ,  H04L25/03012 ,  H04L2025/03439

摘要： The invention relates to a receiver for a quadrature-modulated signal, which can be divided into an inphase signal (I) and a quadrature signal (Q). The inphase signal (I) is fed to first and third equalizers (EZ1, EZ3), and the quadrature signal (Q) is fed to second and fourth equalizers (EZ2, EZ4), wherein the first and second equalizers (EZ1, EZ2) each perform a first equalization of the respective signal. An output of the first equalizer (EZ1) is connected to a second input of the fourth equalizer (EZ4), which, by means of a second equalization of the quadrature signal (Q), transmits an equalized quadrature signal (Q2) as a function of the previously fed equalized inphase signal (II) of the first equalizer (EZ1). An output of the second equalizer (EZ2) is connected to the second input of the third equalizer (EZ3), which, by means of a second equalization of the inphase signal (I), transmits an equalized inphase signal (12) as a function of the previously fed equalized quadrature signal (Q1) of the second equalizer (EZ2).

摘要翻译： 本发明涉及一种用于正交调制信号的接收机，其可分为同相信号（I）和正交信号（Q）。 同相信号（I）被馈送到第一和第三均衡器（EZ1，EZ3），并且正交信号（Q）被馈送到第二和第四均衡器（EZ2，EZ4），其中第一和第二均衡器（EZ1，EZ2） 每个执行相应信号的第一均衡。 第一均衡器（EZ1）的输出连接到第四均衡器（EZ4）的第二输入端，通过正交信号（Q）的第二均衡，发送均衡的正交信号（Q2）作为函数 的第一均衡器（EZ1）的先前馈入的均衡同相信号（II）。 第二均衡器（EZ2）的输出连接到第三均衡器（EZ3）的第二输入端，通过同相信号（I）的第二均衡，发送均衡的同相信号（12）作为函数 的第二均衡器（EZ2）的先前馈送的均衡正交信号（Q1）。

公开(公告)号：US20120141116A1

公开(公告)日：2012-06-07

申请号：US13347863

申请日：2012-01-11

申请人： Li Zeng ,  Chan Zhao ,  Changsong Xie

发明人： Li Zeng ,  Chan Zhao ,  Changsong Xie

IPC分类号： H04J14/00 ,  H04B10/08

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.

摘要翻译： 一种用于恢复OTUk帧的方法包括：接收通过使用从OTUk帧到光模块的接口的多通道分配方法发送的光信号; 将光信号转换成电信号，对电信号执行电均衡和解调，以及从解调信号中恢复多通道数据; 根据包括在每个车道上的数据的开销帧头中的车道序列标识符，对每个车道上的数据进行排列和重排; 并根据对齐和重新排列的数据恢复OTUk帧。 根据本发明，通过检测车道序列标识符来执行车道重排，并且实现了OTUk帧的恢复。 因此，不需要额外引入训练序列开销，避免对系统性能的影响。

公开(公告)号：US20120087680A1

公开(公告)日：2012-04-12

申请号：US13328384

申请日：2011-12-16

申请人： Changsong Xie

发明人： Changsong Xie

IPC分类号： H04B10/06

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，适于在频域中执行接收信号的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。

公开(公告)号：US08855501B2

公开(公告)日：2014-10-07

申请号：US13328384

申请日：2011-12-16

申请人： Changsong Xie

发明人： Changsong Xie

IPC分类号： H04B10/06 ,  H04B10/61 ,  H04B10/60

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，适于在频域中执行接收信号的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。

公开(公告)号：US08199803B2

公开(公告)日：2012-06-12

申请号：US12373614

申请日：2007-07-05

申请人： Fabian Hauske ,  Berthold Lankl ,  Ernst-Dieter Schmidt ,  Changsong Xie

发明人： Fabian Hauske ,  Berthold Lankl ,  Ernst-Dieter Schmidt ,  Changsong Xie

IPC分类号： H03H7/30

CPC分类号： H04L27/223 ,  H04L25/03012 ,  H04L2025/03439

摘要： A receiver is provided for a quadrature-modulated signal, which can be divided into an inphase signal and a quadrature signal. The inphase signal is fed to first and third equalizers, and the quadrature signal is fed to second and fourth equalizers, wherein the first and second equalizers each perform a first equalization of the respective signal. An output of the first equalizer is connected to a second input of the fourth equalizer, which, by means of a second equalization of the quadrature signal, transmits an equalized quadrature signal as a function of the previously fed equalized inphase signal of the first equalizer. An output of the second equalizer is connected to the second input of the third equalizer, which, through a second equalization of the inphase signal, transmits an equalized inphase signal as a function of the previously fed equalized quadrature signal of the second equalizer.

摘要翻译： 为正交调制信号提供接收机，其可以被分成同相信号和正交信号。 同相信号被馈送到第一和第三均衡器，并且正交信号被馈送到第二和第四均衡器，其中第一和第二均衡器各自执行相应信号的第一均衡。 第一均衡器的输出端连接到第四均衡器的第二输入端，该第四均衡器借助正交信号的第二均衡器发送作为第一均衡器的先前馈入的均衡同相信号的函数的均衡正交信号。 第二均衡器的输出端连接到第三均衡器的第二输入端，第三均衡器的第二输入端通过同相信号的第二均衡器发射作为第二均衡器的先前馈入的均衡正交信号的函数的均衡同相信号。