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。

公开(公告)号：US08135280B2

公开(公告)日：2012-03-13

申请号：US12050465

申请日：2008-03-18

申请人： Lei Zong ,  Ting Wang ,  Takefumi Oguma ,  Katsuyuki Mino ,  Osamu Matsuda

发明人： Lei Zong ,  Ting Wang ,  Takefumi Oguma ,  Katsuyuki Mino ,  Osamu Matsuda

IPC分类号： H04J14/02

CPC分类号： H04J14/0221 ,  H04B10/07955 ,  H04J14/021 ,  H04J14/0227 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/0279 ,  H04J14/0283

摘要： Methods and systems for controlling power fluctuations in a network including a plurality of nodes are disclosed. A node in the network may be configured to modify power levels in accordance with either an active state or an inactive state. The node may transition to an inactive state in response to a power change that exceeds a power change threshold. The role of the node in controlling the power fluctuation in the network is reduced in the inactive state.

摘要翻译： 公开了一种用于控制包括多个节点的网络中的功率波动的方法和系统。 网络中的节点可以被配置为根据活动状态或非活动状态来修改功率电平。 响应于超过功率变化阈值的功率变化，节点可以转变到非活动状态。 节点在控制网络中功率波动的作用在不活动状态下降低。

公开(公告)号：US20110304369A1

公开(公告)日：2011-12-15

申请号：US12814371

申请日：2010-06-11

申请人： Junqiang Hu ,  Tyrone Kwok ,  Ting Wang

发明人： Junqiang Hu ,  Tyrone Kwok ,  Ting Wang

IPC分类号： H03L7/00

CPC分类号： H03L7/0814

摘要： A source synchronous signal synchronization system includes a differential signal receiver; a tunable input delay element coupled to the receiver; an input serializer/deserializer (ISerDes) coupled to the tunable input delay; an alignment unit coupled to the ISerDes; and a delay control unit coupled to the tunable input delay, the ISerDes, and the alignment unit.

摘要翻译： 源同步信号同步系统包括差分信号接收机; 耦合到所述接收器的可调输入延迟元件; 耦合到可调输入延迟的输入串行器/解串器（ISerDes）; 耦合到ISerDes的对准单元; 以及与可调输入延迟耦合的延迟控制单元，ISerDes和对准单元。

公开(公告)号：US20110286746A1

公开(公告)日：2011-11-24

申请号：US12900220

申请日：2010-10-07

申请人： Philip Nan Ji ,  Yoshiaki Aono ,  Jianjun Yu ,  Ting Wang ,  Tsutomu Tajima ,  Makoto Shibutani

发明人： Philip Nan Ji ,  Yoshiaki Aono ,  Jianjun Yu ,  Ting Wang ,  Tsutomu Tajima ,  Makoto Shibutani

IPC分类号： H04J14/02

CPC分类号： H04J14/0217 ,  H04J14/0204 ,  H04J14/0205 ,  H04J14/021 ,  H04J14/0212 ,  H04J14/0219

摘要： A method for transponder optical channel selection of optical signals from a transponder aggregator includes choosing wavelength division multiplexing channels to be dropped from a transponder aggregator receiving optical input signals, splitting all dropped wavelength division multiplexing channels into at least one transponder having a coherent receiver and transmitter, and tuning a local oscillator laser of the coherent receiver to a wavelength of one of the all dropped wavelength division multiplexing channels for selecting one of the all dropped wavelength division multiplexing channels.

摘要翻译： 一种用于从应答器聚合器的光信号的应答器光信道选择的方法包括从接收光输入信号的转发器聚合器中选择要丢弃的波分复用信道，将所有丢弃的波分复用信道分解成具有相干接收机和发射机的至少一个应答器 ，并将相干接收机的本地振荡器激光器调谐到所有下降的波分复用信道中的一个的波长，以选择所有丢弃的波分复用信道之一。

公开(公告)号：US08064775B2

公开(公告)日：2011-11-22

申请号：US12183368

申请日：2008-07-31

申请人： Jianjun Yu ,  Lei Xu ,  Philip Ji ,  Ting Wang ,  Dayou Qian ,  Yutaka Yano

发明人： Jianjun Yu ,  Lei Xu ,  Philip Ji ,  Ting Wang ,  Dayou Qian ,  Yutaka Yano

IPC分类号： H04B10/04 ,  H04B10/12

CPC分类号： H04B10/5165 ,  H04B10/54 ,  H04B10/548 ,  H04L27/2601

摘要： A method includes generating at least two lightwave carriers from a lightwave source, the carriers having a wavelength spacing, creating an up-subchannel and a down-subchannel orthogonal to one another and spaced apart based on the fixed wavelength spacing from modulations of the lightwave carriers according to respective up-converted OFDM signals that are carrier suppressed, and combining one lightwave from the up-subchannel and one lightwave from the down-subchannel into an optical channel for transmission over an optical fiber.

摘要翻译： 一种方法包括从光波源产生至少两个光波载波，所述载波具有波长间隔，产生基于与光波载波调制的固定波长间隔彼此正交并且间隔开的向上子信道和下信道 根据载波抑制的各自的上变换的OFDM信号，并将来自上信道的一个光波和来自下信道的一个光波组合成光信道以在光纤上传输。