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    Reverse concatenated encoding and decoding
    3.
    发明授权
    Reverse concatenated encoding and decoding 有权
    反向级联编码和解码

    公开(公告)号：US08595585B2

    公开(公告)日：2013-11-26

    申请号：US13116249

    申请日：2011-05-26

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

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

    IPC分类号： H03M13/00 ,  G06F11/00

    CPC分类号： H03M13/2963 ,  H03M13/1102 ,  H03M13/1117 ,  H03M13/136 ,  H03M13/152 ,  H03M13/6331 ,  H04L1/005 ,  H04L1/0057

    摘要： Methods and systems for transmitting and receiving data include reverse concatenated encoding and decoding. Reverse concatenated decoding includes inner decoding the encoded stream with an inner decoder that uses a low-complexity linear-block code to produce an inner-decoder output stream, outer decoding the inner-decoder output stream with an outer decoder that uses a low-density parity-check code to produce an information stream, and iterating extrinsic bit reliabilities from the outer decoding for use in subsequent inner decoding to improve decoding performance.

    摘要翻译： 发送和接收数据的方法和系统包括反向级联编码和解码。 反向级联解码包括使用内部解码器对编码流进行内部解码，内部解码器使用低复杂度线性块码来产生内部解码器输出流，使用外部解码器对内部解码器输出流进行外部解码，外部解码器使用低密度 奇偶校验码产生信息流，以及从外部解码中迭代外部位可靠性，用于随后的内部解码以提高解码性能。

    Reduced-complexity LDPC decoding
    4.
    发明授权
    Reduced-complexity LDPC decoding 有权
    降低复杂度的LDPC解码

    公开(公告)号：US08589755B2

    公开(公告)日：2013-11-19

    申请号：US13114793

    申请日：2011-05-24

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

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

    IPC分类号： H03M13/00 ,  G06F11/00

    CPC分类号： H03M13/1117 ,  H03M13/6502 ,  H03M13/658 ,  H04L1/0047 ,  H04L1/0054 ,  H04L1/0057 ,  H04L1/0071

    摘要： Methods and systems for reduced-complexity decoding of low-density parity-check (LDPC) information. An encoded input stream is received. The received stream is decoded with one or more reduced-complexity min-sum or a posteriori probability LDPC decoders. A v-node update rule in the reduced complexity decoder is omitted.

    摘要翻译： 用于低密度奇偶校验（LDPC）信息的降低复杂度解码的方法和系统。 接收编码的输入流。 所接收的流被解码为一个或多个复杂度较低的最小和或后验概率LDPC解码器。 省略了复杂度降低的解码器中的v节点更新规则。

    Coded polarization-multiplexed iterative polar modulation
    7.
    发明授权
    Coded polarization-multiplexed iterative polar modulation 有权
    编码偏振复用迭代极化调制

    公开(公告)号：US08588623B2

    公开(公告)日：2013-11-19

    申请号：US12860659

    申请日：2010-08-20

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

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

    IPC分类号： H04B10/06

    CPC分类号： H04L25/03171 ,  H04B10/532 ,  H04B10/6971 ,  H04J14/002 ,  H04J14/06 ,  H04L1/005 ,  H04L1/0057 ,  H04L1/0071 ,  H04L27/3405

    摘要： Systems and methods for optical communication that use a transmitter/receiver. The systems and methods include receiving a modulated, encoded input stream. Channel memory is reduced using coarse digital backpropagation and other channel impairments are removed using turbo equalization. Symbols are detected in the input stream that conform to a non-uniform, polar constellation having a Gaussian source distribution to produce a stream of encoded data. The stream of encoded data is decoded with one or more low density parity check (LDPC) decoders.

    摘要翻译： 使用发射机/接收机的光通信系统和方法。 系统和方法包括接收经调制的编码的输入流。 使用粗数字反向传播减少信道存储，并且使用turbo均衡消除其他信道损伤。 在符合具有高斯源分布的非均匀极坐标的输入流中检测符号以产生编码数据流。 编码数据流用一个或多个低密度奇偶校验（LDPC）解码器解码。

    Superimposed training and digital filtering coherent optical receivers
    8.
    发明授权
    Superimposed training and digital filtering coherent optical receivers 有权
    叠加训练和数字滤波相干光接收机

    公开(公告)号：US08538278B2

    公开(公告)日：2013-09-17

    申请号：US12702895

    申请日：2010-02-09

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

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

    IPC分类号： H04B10/06

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

    摘要： In a polarization-multiplexing optical communications system, a method and system for coherent reception of polarization-multiplexed optical communications. Training and data sequences are recovered from a plurality of orthogonally polarized signals, such that training and data sequences may be used on a single channel without loss of spectral efficiency. This is accomplished by estimating a channel response for each orthogonally polarized signal based on the mean of the signal and distinguishing between a data sequence and a training sequence in each orthogonally polarized signal. Such distinguishing is accomplished according to an iterative linear minimum mean-square equalization based on the respective channel response estimate.

    摘要翻译： 在偏振复用光通信系统中，用于偏振复用光通信的相干接收的方法和系统。 从多个正交极化信号恢复训练和数据序列，使得训练和数据序列可以在单个信道上使用而不损失频谱效率。 这通过基于信号的平均值估计每个正交极化信号的信道响应并且在每个正交极化信号中区分数据序列和训练序列来实现。 这种区分是根据相应的信道响应估计的迭代线性最小均方均衡完成的。

    Polarization mode dispersion compensation in multilevel coded-modulation schemes using blast algorithm and iterative polarization cancellation
    9.
    发明授权
    Polarization mode dispersion compensation in multilevel coded-modulation schemes using blast algorithm and iterative polarization cancellation 有权
    使用爆炸算法和迭代偏振消除的多级编码调制方案中的偏振模色散补偿

    公开(公告)号：US08385439B2

    公开(公告)日：2013-02-26

    申请号：US12392294

    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： H04K1/10 ,  H04K3/00 ,  H04B10/06

    CPC分类号： H04L27/3405 ,  H04B10/2569 ,  H04B10/60 ,  H04B10/697 ,  H04B2210/252 ,  H04L1/005 ,  H04L1/0631 ,  H04L1/0656 ,  H04L5/0023 ,  H04L25/067 ,  H04L27/2649 ,  H04L2025/03426 ,  H04L2025/03611

    摘要： Receivers and methods are provided for polarization mode dispersion compensation in multi-level coded-modulation schemes using a BLAST algorithm and iterative polarization cancellation. A receiver includes a vertical Bell Laboratories Layered Space-Time Architecture (V-BLAST) orthogonal frequency division multiplexing (OFDM) detector configured to receive input sequences and partially cancel polarization interference with respect to the input sequences to output symbol estimates for the input sequences. The receiver further includes one or more low-density parity-check (LDPC) decoders coupled to the V-BLAST OFDM detector configured to receive channel bit reliabilities and output code words. The channel bit reliabilities are indirectly calculated from the symbol estimates. The one or more LDPC decoders iteratively provide extrinsic soft information feedback to the V-BLAST OFDM detector to compensate for the polarization interference.

    摘要翻译： 为使用BLAST算法和迭代偏振消除的多电平编码调制方案中的偏振模色散补偿提供接收机和方法。 接收机包括垂直的贝尔实验室分层时空架构（V-BLAST）正交频分复用（OFDM）检测器，其被配置为接收输入序列并部分地消除相对于输入序列的偏振干扰，以输出输入序列的符号估计。 接收机还包括耦合到V-BLAST OFDM检测器的一个或多个低密度奇偶校验（LDPC）解码器，被配置为接收信道位可靠性和输出码字。 信道位可靠性是从符号估计中间接计算的。 一个或多个LDPC解码器向V-BLAST OFDM检测器反复地提供外在的软信息反馈以补偿极化干扰。