公开(公告)号：US08260156B2

公开(公告)日：2012-09-04

申请号：US12607166

申请日：2009-10-28

申请人： Dayou Qian ,  Ting Wang

发明人： Dayou Qian ,  Ting Wang

IPC分类号： H04B10/06 ,  H04B10/12 ,  H04B10/00

CPC分类号： H04J14/002 ,  H04B10/2513 ,  H04B10/60 ,  H04B10/6161 ,  H04B10/6162 ,  H04J14/06

摘要： A method for the polarization independent frequency domain equalization (FDE) on polarization multiplexing (POLMUX) coherent systems employing an adaptive crossing FDE which advantageously produces CD compensation, PMD compensation and PolDeMux within one functional block of a digital signal processor (DSP).

摘要翻译： 一种在偏振复用（POLMUX）相干系统上使用自适应交叉FDE的偏振无关频域均衡（FDE）的方法，其有利地在数字信号处理器（DSP）的一个功能块内产生CD补偿，PMD补偿和PolDeMux。

公开(公告)号：US08233797B2

公开(公告)日：2012-07-31

申请号：US12545159

申请日：2009-08-21

申请人： Dayou Qian ,  Neda Cvijetic ,  Junqiang Hu ,  Ting Wang

发明人： Dayou Qian ,  Neda Cvijetic ,  Junqiang Hu ,  Ting Wang

IPC分类号： H04B10/20 ,  H04J14/00

CPC分类号： H04J14/0282 ,  H04J14/0232 ,  H04J14/0247 ,  H04J14/0252 ,  H04J14/0298 ,  H04L25/0216

摘要： Methods and systems for processing communication signals in an Orthogonal Frequency Division Multiple Access (OFDMA)-Passive Optical Network (PON) are disclosed. An optical carrier at a wavelength generated at an optical line terminal (OLT) may be reused by optical network units (ONUs) in the network for upstream transmission of data signals to the OLT. In addition, each ONU may perform carrier suppression to avoid broadband beating noise resulting from the simultaneous transmission of upstream data signals on the same wavelength. Further, the optical source at the OLT used to generate the optical carrier may be reused as a local oscillator for coherent detection of received upstream signals to minimize any frequency offsets.

摘要翻译： 公开了在正交频分多址（OFDMA）无源光网络（PON）中处理通信信号的方法和系统。 在光线路终端（OLT）处生成的波长的光载波可以由网络中的光网络单元（ONU）重新使用，用于向OLT发送数据信号。 此外，每个ONU可以执行载波抑制以避免由于在相同波长上的上行数据信号的同时传输而导致的宽带打扰噪声。 此外，用于生成光载波的OLT处的光源可以重新用作本地振荡器，用于相干检测接收到的上行信号，以使任何频率偏移最小化。

公开(公告)号：US08218977B2

公开(公告)日：2012-07-10

申请号：US12731869

申请日：2010-03-25

申请人： Philip Nan Ji ,  Lei Xu ,  Ting Wang ,  Shuji Murakami ,  Tsutomu Tajima ,  Yutaka Yano

发明人： Philip Nan Ji ,  Lei Xu ,  Ting Wang ,  Shuji Murakami ,  Tsutomu Tajima ,  Yutaka Yano

IPC分类号： H04B10/06

CPC分类号： H04B10/677

摘要： An optical device includes an interferometer for a received optical differential phase shift keying DPSK signal, and an equalizer integrated with the interferometer in a manner for reducing from optical filtering effects an interference by signal bits of the DPSK signal with signal bits of a contiguous DPSK signal. The interferometer is a Michelson delay interferometer type, but can also be a Mach-Zehnder delay interferometer type on fiber, waveguide or other optical structure. The equalizer is a Fabry-Perot type equalizer, but can be a ring resonator type or a fiber based equalizer.

摘要翻译： 光学装置包括用于接收的光学差分相移键控DPSK信号的干涉仪，以及与干涉仪集成的均衡器，以减少光学滤波的方式，利用DPSK信号的信号位与相邻DPSK信号的信号位的干扰 。 干涉仪是迈克尔逊延迟干涉仪型号，但也可以是光纤，波导或其他光学结构上的马赫 - 曾德延迟干涉仪。 均衡器是法布里 - 珀罗型均衡器，但可以是环形谐振器型或基于光纤的均衡器。

公开(公告)号：US20120172492A1

公开(公告)日：2012-07-05

申请号：US13395488

申请日：2010-09-16

申请人： Ting Wang ,  Meng-Jiao Wang ,  Bernard Mariadass ,  Thirunavuc Karasu Govindan ,  Anthony das Thiruhelvanathan ,  Boon Kwang Lee ,  Xuan Zhang

发明人： Ting Wang ,  Meng-Jiao Wang ,  Bernard Mariadass ,  Thirunavuc Karasu Govindan ,  Anthony das Thiruhelvanathan ,  Boon Kwang Lee ,  Xuan Zhang

IPC分类号： C08L7/02 ,  C08K3/04 ,  B01J19/00 ,  C08J3/16

CPC分类号： C08J5/02 ,  B01F5/0646 ,  B01F5/0653 ,  B29B7/325 ,  B29B7/7495 ,  B29B7/90 ,  B60C1/0016 ,  C08C1/14 ,  C08J3/005 ,  C08J3/203 ,  C08J2307/02 ,  C08J2321/02 ,  C08J2407/02 ,  C08K3/04 ,  C08K3/045 ,  C08K2201/006 ,  C08L7/02 ,  C08L15/00

摘要： A method of producing a coagulated latex composite. A coagulating mixture of a first elastomer latex and a particulate filler slurry is flowed along a conduit, and a second elastomer latex is introduced into the flow of the coagulating mixture.

摘要翻译： 一种生产凝结胶乳复合材料的方法。 将第一弹性体胶乳和颗粒状填料浆料的凝结混合物沿管道流动，将第二弹性体胶乳引入凝结混合物流中。

公开(公告)号：US08185796B2

公开(公告)日：2012-05-22

申请号：US12392335

申请日：2009-02-25

申请人： Ivan B. Djordjevic ,  Lei Xu ,  Ting Wang

发明人： Ivan B. Djordjevic ,  Lei Xu ,  Ting Wang

IPC分类号： G06F11/00

CPC分类号： H03M13/1117 ,  H03M13/2957 ,  H03M13/6331 ,  H04L1/005 ,  H04L1/0057 ,  H04L1/0071 ,  H04L5/0008 ,  H04L25/03171 ,  H04L25/03203 ,  H04L25/067 ,  H04L27/223 ,  H04L27/2649 ,  H04L2025/03363 ,  H04L2025/03414 ,  H04L2025/03611

摘要： A receiver and method are provided for mitigation of finer non-linearities in multilevel coded-modulation schemes. The receiver includes a multilevel Bahl-Cocke-Jelinek-Raviv (BCJR) equalizer configured to receive channel samples of an input signal, partially mitigate fiber non-linearities, and provide symbol reliabilities. The receiver further includes a bit probabilities module coupled to the BCJR equalizer configured to calculate soft bit reliabilities from the symbol reliabilities. The receiver also includes one or more low-density parity-check (LDPC) decoders coupled to the bit probabilities module and the BCJR equalizer, configured to receive the soft bit reliabilities and output code words. The one or more LDPC decoders iteratively provide extrinsic soft information feedback to the BCJR equalizer to compensate for the fiber non-linearities.

摘要翻译： 提供了一种用于缓解多电平编码调制方案中更精细的非线性的接收机和方法。 接收机包括一个多层次Bahl-Cocke-Jelinek-Raviv（BCJR）均衡器，被配置为接收输入信号的信道样本，部分地减轻光纤非线性并提供符号可靠性。 接收机还包括耦合到BCJR均衡器的位概率模块，其被配置为从符号可靠性计算软比特可靠性。 接收机还包括耦合到比特概率模块和BCJR均衡器的一个或多个低密度奇偶校验（LDPC）解码器，被配置为接收软比特可靠性和输出码字。 一个或多个LDPC解码器向BCJR均衡器迭代地提供外部软信息反馈以补偿光纤非线性。

公开(公告)号：US08184993B2

公开(公告)日：2012-05-22

申请号：US12392317

申请日：2009-02-25

申请人： Ivan B. Djordjevic ,  Lei Xu ,  Ting Wang

发明人： Ivan B. Djordjevic ,  Lei Xu ,  Ting Wang

IPC分类号： H04B10/00

CPC分类号： H04L27/2647 ,  H03M13/1102 ,  H03M13/2957 ,  H03M13/31 ,  H03M13/6561 ,  H04B10/2572 ,  H04B10/548 ,  H04L1/005 ,  H04L1/0057 ,  H04L1/0066

摘要： A receiver and method are provided. The receiver includes a detector configured to receive polarization multiplexed coded orthogonal frequency division multiplexing input sequences and generate estimates of unknown transmitted symbols in the input sequences for x- and y-polarization channels with respect to laser phase noise and PMD. A demapper coupled to the detector is configured to partially cancel polarization mode dispersion (PMD) in the input sequences by computing symbol probabilities for the estimates with respect to the laser phase noise, and averaging the symbol probabilities with respect to the laser phase noise. One or more low-density parity-check (LDPC) decoders coupled to the demapper are configured to receive bit probabilities derived from the averaged symbol probabilities and output code words based at least on the bit probabilities. The one or more LDPC decoders iteratively provide extrinsic soft information feedback to the demapper to compensate for the PMD.

摘要翻译： 提供接收机和方法。 接收机包括检测器，其被配置为接收偏振复用的编码的正交频分复用输入序列，并且针对相对于激光相位噪声和PMD的x和y偏振通道的输入序列生成未知发射符号的估计。 耦合到检测器的去映射器被配置为通过计算关于激光相位噪声的估计的符号概率，并相对于激光相位噪声来平均符号概率来部分地消除输入序列中的偏振模色散（PMD）。 耦合到解映射器的一个或多个低密度奇偶校验（LDPC）解码器被配置为从至少基于位概率接收从平均符号概率导出的比特概率和输出码字。 一个或多个LDPC解码器向解映射器反复地提供外在的软信息反馈以补偿PMD。

公开(公告)号：US08184973B2

公开(公告)日：2012-05-22

申请号：US12371233

申请日：2009-02-13

申请人： Dayou Qian ,  Lei Xu ,  Junqiang Hu ,  Ting Wang

发明人： Dayou Qian ,  Lei Xu ,  Junqiang Hu ,  Ting Wang

IPC分类号： H04J14/06 ,  H04B10/158

CPC分类号： H04J14/06 ,  H04B10/61 ,  H04B10/676

摘要： There is provided a method for detecting optical signals comprising employing a photo diode to both directly detect a received optical signal and convert it into an electrical signal for recovery of data bit stream information in the received optical signal, the received optical signal being derived from a separation of two polarization multiplexed optical signals that were combined before being received.

摘要翻译： 提供了一种用于检测光信号的方法，包括采用光电二极管直接检测接收到的光信号并将其转换成用于恢复所接收的光信号中的数据位流信息的电信号，所接收的光信号从 在接收之前组合的两个偏振复用光信号的分离。

公开(公告)号：US20120099637A1

公开(公告)日：2012-04-26

申请号：US12911455

申请日：2010-10-25

申请人： Junquiang Hu ,  Ting Wang

发明人： Junquiang Hu ,  Ting Wang

IPC分类号： H04L27/01 ,  H03D1/00

CPC分类号： H04L25/022 ,  H04L25/0212 ,  H04L25/03159

摘要： Systems and methods are disclosed for dynamic channel estimation in a digital receiver by performing a dynamic equalization on an incoming signal to compensate for channel distortion; independently estimating one or more channel parameters for the dynamic equalization, wherein the one or more channel parameters track channel change; determining a convolution of the channel parameters and updating the parameters for the dynamic equalization for subsequent processing of incoming signal; and providing an equalized output from the digital receiver.

摘要翻译： 公开了在数字接收机中通过对输入信号执行动态均衡以补偿信道失真的系统和方法来进行动态信道估计; 独立地估计所述动态均衡的一个或多个信道参数，其中所述一个或多个信道参数跟踪信道改变; 确定信道参数的卷积并更新用于动态均衡的参数以用于后续处理输入信号; 并提供来自数字接收机的均衡输出。

公开(公告)号：US20120087664A1

公开(公告)日：2012-04-12

申请号：US13270209

申请日：2011-10-10

申请人： Jingjing Zhang ,  Ting Wang

发明人： Jingjing Zhang ,  Ting Wang

IPC分类号： H04J14/00

CPC分类号： H04J14/0298 ,  H04L5/0007 ,  H04L5/0037 ,  H04L5/0053 ,  H04L5/0064 ,  H04Q11/0067 ,  H04Q2011/0064

摘要： Systems and methods are disclosed for providing media access control (MAC) in an optical network by providing a separate control channel and data channel; dedicating each optical network unit (ONU) with one control channel, wherein the control message is transmitted at any time without constraints; sending a grant message to an ONU just before an allocated time is about to start; and sending data traffic from the ONU immediately after receiving the grant message without synchronizing with an optical line terminal (OLT) clock.

摘要翻译： 公开了用于通过提供单独的控制信道和数据信道在光网络中提供媒体接入控制（MAC）的系统和方法; 将每个光网络单元（ONU）专用于一个控制信道，其中所述控制消息在任何时间被无限制地发送; 在分配的时间即将开始之前向ONU发送授权消息; 并且在接收到授权消息之后立即从ONU发送数据业务，而不与光线路终端（OLT）时钟同步。

公开(公告)号：US08135287B2

公开(公告)日：2012-03-13

申请号：US12183381

申请日：2008-07-31

申请人： Jianjun Yu ,  Ting Wang

发明人： Jianjun Yu ,  Ting Wang

IPC分类号： H04B10/04 ,  H04B10/12

CPC分类号： H04J14/06 ,  H04B10/5165 ,  H04B10/532 ,  H04B10/548 ,  H04J14/002 ,  H04L5/0014 ,  H04L27/2627 ,  H04L27/2697

摘要： A method includes modulating lightwaves to provide first and second OFDM signal sidebands at a first polarization direction and first and second OFDM signal sidebands at a second polarization direction, and combining sidebands that are oppositely positioned and joined from the first and second OFDM signal sidebands at each polarization direction to provide a polarization multiplexing OFDM signal.

摘要翻译： 一种方法包括调制光波以在第一偏振方向提供第一和第二OFDM信号边带，以及在第二极化方向上提供第一和第二OFDM信号边带，并且组合在每一个处与第一和第二OFDM信号边带相对地定位和连接的边带 偏振方向，以提供偏振复用OFDM信号。