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12 条记录 (耗时 0.011 秒)

    Superimposed training and digital filtering coherent optical receivers
    2.
    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。

    Wavelength transmission system and method using 3-dimensional LDPC-coded modulation
    3.
    发明授权
    Wavelength transmission system and method using 3-dimensional LDPC-coded modulation 有权
    波长传输系统和使用三维LDPC编码调制的方法

    公开(公告)号：US07991070B2

    公开(公告)日：2011-08-02

    申请号：US12050507

    申请日：2008-03-18

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

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

    IPC分类号： H04L27/04 ,  H04L27/227 ,  H04B10/145 ,  H04B10/148

    CPC分类号： H04L27/3416 ,  H04L1/005 ,  H04L1/0057 ,  H04L1/0071 ,  H04L25/03178 ,  H04L25/067 ,  H04L2025/03611

    摘要： A transmitter and method include a LDPC encoder configured to encode source data, and a mapper configured to generate three coordinates in accordance with a 3D signal constellation where the coordinates include an amplitude coordinate and two phase coordinates. A laser source is modulated in accordance with each of the three coordinates to provide a transmission signal. A receiver, includes a demapper receives an input signal from three branches to demap the input signal using a three-dimensional signal constellation having three coordinates. The three branches include a direct detection branch, and two coherent detection branches such that the direct detection branch detects an amplitude coordinate of the input signal and the two coherent detection branches detect in-phase and quadrature coordinates of the input signal. A bit prediction module and at least one LDPC decoder are configured to iteratively decode bits by feeding back extrinsic LLRs to the demapper.

    摘要翻译： 发射机和方法包括被配置为对源数据进行编码的LDPC编码器，以及映射器，被配置为根据其中坐标包括振幅坐标和两个相位坐标的3D信号星座生成三个坐标。 根据三个坐标中的每一个调制激光源，以提供发送信号。 接收机包括解映射器，接收来自三个分支的输入信号，以使用具有三个坐标的三维信号星座对输入信号进行解映射。 三个分支包括直接检测分支和两个相干检测分支，使得直接检测分支检测输入信号的幅度坐标，并且两个相干检测分支检测输入信号的同相和正交坐标。 比特预测模块和至少一个LDPC解码器被配置为通过将外部LLR反馈到解映射器来迭代地解码比特。

    WAVELENGTH TRANSMISSION SYSTEM AND METHOD USING 3-DIMENSIONAL LDPC-CODED MODULATION
    5.
    发明申请
    WAVELENGTH TRANSMISSION SYSTEM AND METHOD USING 3-DIMENSIONAL LDPC-CODED MODULATION 有权
    波长传输系统和使用三维LDPC编码调制的方法

    公开(公告)号：US20090052907A1

    公开(公告)日：2009-02-26

    申请号：US12050507

    申请日：2008-03-18

    申请人： HUSSAM G. BATSHON ,  IVAN B. DJORDJEVIC ,  LEI XU ,  TING WANG ,  MILORAD CVIJETIC

    发明人： HUSSAM G. BATSHON ,  IVAN B. DJORDJEVIC ,  LEI XU ,  TING WANG ,  MILORAD CVIJETIC

    IPC分类号： H04B10/04 ,  H04B10/06 ,  G06F11/00

    CPC分类号： H04L27/3416 ,  H04L1/005 ,  H04L1/0057 ,  H04L1/0071 ,  H04L25/03178 ,  H04L25/067 ,  H04L2025/03611

    摘要： A transmitter and method include a LDPC encoder configured to encode source data, and a mapper configured to generate three coordinates in accordance with a 3D signal constellation where the coordinates include an amplitude coordinate and two phase coordinates. A laser source is modulated in accordance with each of the three coordinates to provide a transmission signal. A receiver, includes a demapper receives an input signal from three branches to demap the input signal using a three-dimensional signal constellation having three coordinates. The three branches include a direct detection branch, and two coherent detection branches such that the direct detection branch detects an amplitude coordinate of the input signal and the two coherent detection branches detect in-phase and quadrature coordinates of the input signal. A bit prediction module and at least one LDPC decoder are configured to iteratively decode bits by feeding back extrinsic LLRs to the demapper.

    摘要翻译： 发射机和方法包括被配置为对源数据进行编码的LDPC编码器，以及映射器，被配置为根据其中坐标包括振幅坐标和两个相位坐标的3D信号星座生成三个坐标。 根据三个坐标中的每一个调制激光源，以提供发送信号。 接收机包括解映射器，接收来自三个分支的输入信号，以使用具有三个坐标的三维信号星座对输入信号进行解映射。 三个分支包括直接检测分支和两个相干检测分支，使得直接检测分支检测输入信号的幅度坐标，并且两个相干检测分支检测输入信号的同相和正交坐标。 比特预测模块和至少一个LDPC解码器被配置为通过将外部LLR反馈到解映射器来迭代地解码比特。

    System and Method Including Modified Bit-Interleaved Coded Modulation
    6.
    发明申请
    System and Method Including Modified Bit-Interleaved Coded Modulation 有权
    包括修改的位交错编码调制的系统和方法

    公开(公告)号：US20130216221A1

    公开(公告)日：2013-08-22

    申请号：US13569628

    申请日：2012-08-08

    申请人： Hongbin Zhang ,  Hussam G. Batshon

    发明人： Hongbin Zhang ,  Hussam G. Batshon

    IPC分类号： H04J14/00 ,  H04B10/06 ,  H03M13/05 ,  H04B10/04

    CPC分类号： H04L1/0065 ,  H04L1/0057 ,  H04L1/0063 ,  H04L1/0071

    摘要： A system and method with a modified bit-interleaved coded modulation with iterative decoding (BICM-ID). Coded and interleaved bits are combined and coded with a second FEC code that is then mapped to a modulation format. The second FEC code may be a single parity check (SPC) and the scheme may be referred to as a SPC-BICM-ID scheme.

    摘要翻译： 具有经过修改的位交织编码调制与迭代解码（BICM-ID）的系统和方法。 编码和交织的比特被组合并用第二FEC码进行编码，然后将其映射到调制格式。 第二FEC码可以是单个奇偶校验（SPC），并且该方案可以被称为SPC-BICM-ID方案。

    System and method for generating soft decision reliability information from hard decisions in an optical signal receiver
    9.
    发明授权
    System and method for generating soft decision reliability information from hard decisions in an optical signal receiver 有权
    用于从光信号接收机中的硬判决生成软判决可靠性信息的系统和方法

    公开(公告)号：US08948612B2

    公开(公告)日：2015-02-03

    申请号：US12960438

    申请日：2010-12-03

    申请人： Yi Cai ,  Hussam G. Batshon

    发明人： Yi Cai ,  Hussam G. Batshon

    IPC分类号： H04B10/61 ,  H04L1/00 ,  H04L1/20 ,  H04L25/06

    CPC分类号： H04B10/616 ,  H04L1/0045 ,  H04L1/20 ,  H04L25/067

    摘要： A system and method for generating soft decision reliability information from hard decisions in an optical signal receiver. The receiver may include a digital signal processor including a symbol reliability function for generating symbol reliability information associated with symbols encoded on optical signal. The symbol reliability information may be generated as a function of the symbols and hard decision outputs associated with the symbols.

    摘要翻译： 一种用于从光信号接收机中的硬判决产生软判决可靠性信息的系统和方法。 接收机可以包括数字信号处理器，其包括用于生成与在光信号上编码的符号相关联的符号可靠性信息的符号可靠性函数 可以根据与符号相关联的符号和硬判决输出来生成符号可靠性信息。