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    Reconfigurable optical space switch
    1.
    发明授权
    Reconfigurable optical space switch 有权

    公开(公告)号：US10162121B2

    公开(公告)日：2018-12-25

    申请号：US15907777

    申请日：2018-02-28

    Applicant: NEC Laboratories America, Inc.

    Inventor： Ivan B. Djordjevic ,  Shaoliang Zhang ,  Ting Wang

    IPC: G02B6/35

    Abstract: A method and switch are provided for reconfigurable optical space switch. The method includes receiving a control signal, from a controller, to configure a path through the reconfigurable optical space switch. The method also includes applying a voltage to one or more direction changing devices at each intersection between each of the east-west optical waveguides and each of the north-south optical waveguides to form the path through the reconfigurable optical space switch. The method additionally includes receiving an optical signal in one of a plurality of passive waveguides at a beginning of the path, including the plurality of east-west optical waveguides and the plurality of north-south optical waveguides. The method further includes outputting the optical signal out on of the plurality of passive waveguides at an end of the path.

    Rate adaptive irregular QC-LDPC codes from pairwise balanced designs for ultra-high-speed optical transports
    4.
    发明授权
    Rate adaptive irregular QC-LDPC codes from pairwise balanced designs for ultra-high-speed optical transports 有权
    为超高速光传输的成对平衡设计率自适应不规则QC-LDPC码

    公开(公告)号：US09367387B2

    公开(公告)日：2016-06-14

    申请号：US14162951

    申请日：2014-01-24

    Applicant: NEC Laboratories America, Inc.

    Inventor： Ivan B. Djordjevic ,  Ting Wang

    IPC: H03M13/00 ,  G06F11/10 ,  H03M13/25 ,  H03M13/11 ,  H03M13/03

    CPC classification number: G06F11/10 ,  H03M13/033 ,  H03M13/112 ,  H03M13/116 ,  H03M13/1171 ,  H03M13/1177 ,  H03M13/255 ,  H04L1/0009

    Abstract: Systems and methods for data transport include encoding one or more streams of input data using one or more Quasi-Cyclic Low Density Parity Check (QC-LDPC) encoders; controlling irregularity of the QC-LDPC encoded data while preserving the quasi-cyclic nature of the LDPC encoded data and eliminating the error floor phenomenon. A parity-check matrix may be partially reconfigured to adapt one or more code rates; and one or more signals are generated using a mapper, wherein the output of the mapper is modulated onto a transmission medium. One or more streams of input data are received, and the streams are decoded using one or more QC-LDPC decoders.

    Abstract translation: 用于数据传输的系统和方法包括使用一个或多个准循环低密度奇偶校验（QC-LDPC）编码器来编码一个或多个输入数据流; 控制QC-LDPC编码数据的不规则性，同时保留LDPC编码数据的准循环性质并消除错误出现现象。 可以部分地重新配置奇偶校验矩阵以适应一个或多个码率; 并且使用映射器生成一个或多个信号，其中映射器的输出被调制到传输介质上。 接收一个或多个输入数据流，并且使用一个或多个QC-LDPC解码器解码流。

    Dynamic multidimensional optical networking based on spatial and spectral processing
    5.
    发明授权
    Dynamic multidimensional optical networking based on spatial and spectral processing 有权
    基于空间和光谱处理的动态多维光网络

    公开(公告)号：US08891964B2

    公开(公告)日：2014-11-18

    申请号：US13712465

    申请日：2012-12-12

    Applicant: NEC Laboratories America, Inc.

    Inventor： Milorad Cvijetic ,  Ivan B. Djordjevic ,  Neda Cvijetic ,  Ting Wang

    IPC: H04J14/00 ,  H04J14/04 ,  H04B10/2581 ,  H04B10/532 ,  H04B10/548

    CPC classification number: H04J14/04 ,  H04B10/2581 ,  H04B10/532 ,  H04B10/548

    Abstract: An optical network includes a multidimensional coder and modulator for handling multiple-in-multiple-out MIMO spatial lightpath properties and content of any specific supercarrier, a spatial mode multiplexer responsive to orthogonal frequency division multiplexing OFDM transmissions and the multidimensional coder, a spatial-spectral routing node coupled over a fiber link to the spatial mode multiplexer for performing switching granularity by a spatial mode reconnection, a multidimensional decoder and demodulator; and a spatial mode demultiplexer coupled over a fiber link to the spatial-spectral routing node and responsive to the multidimensional decoder and demodulator.

    Abstract translation: 光网络包括用于处理多重多输出MIMO空间光路特性和任何特定超载波的内容的多维编码器和调制器，响应于正交频分复用OFDM传输的空间模式多路复用器和多维编码器，空间光谱 通过光纤链路耦合到空间模式多路复用器的路由节点，用于通过空间模式重新连接来执行交换粒度;多维解码器和解调器; 以及空间模式解复用器，其通过光纤链路耦合到空间光谱路由节点并响应于多维解码器和解调器。

    ULTRA-HIGH-SPEED OPTICAL TRANSPORT BASED ON ADAPTIVE LDPC-CODED MULTIDIMENSIONAL SPATIAL-SPECTRAL SCHEME AND ORTHOGONAL PROLATE SPHEROIDAL WAVE FUNCTIONS
    6.
    发明申请
    ULTRA-HIGH-SPEED OPTICAL TRANSPORT BASED ON ADAPTIVE LDPC-CODED MULTIDIMENSIONAL SPATIAL-SPECTRAL SCHEME AND ORTHOGONAL PROLATE SPHEROIDAL WAVE FUNCTIONS 有权
    基于自适应LDPC编码的多维空间光谱方案和正交扩展的空间波函数的超高速光传输

    公开(公告)号：US20140270759A1

    公开(公告)日：2014-09-18

    申请号：US14218116

    申请日：2014-03-18

    Applicant: NEC Laboratories America, Inc.

    Inventor： Ivan B. Djordjevic ,  Ting Wang

    IPC: H04L1/00 ,  H04J14/04

    CPC classification number: H04L1/0043 ,  H04B10/2581 ,  H04B10/516 ,  H04B10/5161 ,  H04B10/61 ,  H04B10/616 ,  H04J14/04 ,  H04J14/06 ,  H04J2203/0089 ,  H04J2211/00 ,  H04L1/0002 ,  H04L1/0041 ,  H04L1/005 ,  H04L1/0058 ,  H04L1/0061

    Abstract: Systems and methods for transmitting data, including encoding one or more streams of input data using one or more adaptive Low Density Parity Check (LDPC) encoders, wherein the encoders generate one or more signal constellations; modulate one or more signals using hybrid multidimensional coded modulation; apply orthogonal prolate spheroidal wave functions as electrical basis functions; generate one or more spectral band group signals by selecting and combining two or more spectral band groups with center frequencies that are orthogonal to each other; and spectral-mode-multiplex and transmit the one or more adaptive LDPC-coded data streams including the one or more spectral band group signals combined into corresponding spatial modes over a transmission medium.

    Abstract translation: 用于发送数据的系统和方法，包括使用一个或多个自适应低密度奇偶校验（LDPC）编码器编码一个或多个输入数据流，其中所述编码器生成一个或多个信号星座; 使用混合多维编码调制来调制一个或多个信号; 应用正交长椭球波函数作为电气基函数; 通过选择并组合两个或更多个具有彼此正交的中心频率的频谱带组来产生一个或多个频谱组信号; 并且通过传输介质将包括一个或多个频谱组合信号的一个或多个自适应LDPC编码数据流发送到相应的空间模式中进行频谱模式复用。

    Nonbinary LDPC coded modulation without bandwidth expansion for high-speed optical transmission
    8.
    发明授权
    Nonbinary LDPC coded modulation without bandwidth expansion for high-speed optical transmission 有权
    用于高速光传输的无带宽扩展的非二进制LDPC编码调制

    公开(公告)号：US09166728B2

    公开(公告)日：2015-10-20

    申请号：US13646392

    申请日：2012-10-05

    Applicant: NEC Laboratories America, Inc.

    Inventor： Ivan B. Djordjevic ,  Lei Xu ,  Ting Wang

    IPC: H04J14/06 ,  H04J14/04 ,  H04B10/50

    CPC classification number: H04J14/04 ,  H04B10/5055 ,  H04J14/06

    Abstract: Systems and methods for data transport, comprising encoding one or more streams of input data using nonbinary low density parity check (NB-LDPC) encoders, corresponding to orthogonal polarization states. Receiving one or more streams of input data using a buffer coupled to the encoders, the data written to the buffer bR bits at a time, where R is the code rate. Generating one or more signals using a 2b-ary mapper implemented as a look-up table (LUT) to store coordinates of a corresponding signal constellation, the 2b-ary mapper configured to assign bits of one or more signals to a signal constellation and to associate the bits of the signals with signal constellation points, wherein the constellation is expanded to avoid bandwidth expansion due to coding, generating substantial net coding gains within a same bandwidth. Modulating nonbinary LDPC-coded data streams using in-phase/quadrature (I/Q) modulators and multiplexing the data streams using polarization beam combiner.

    Abstract translation: 用于数据传输的系统和方法，包括使用对应于正交极化状态的非二进制低密度奇偶校验（NB-LDPC）编码器来编码一个或多个输入数据流。 使用耦合到编码器的缓冲器接收一个或多个输入数据流，每次写入缓冲器bR位的数据，其中R是码率。 使用实现为查找表（LUT）的2b-ary映射器来存储一个或多个信号来存储对应的信号星座的坐标，2b-ary映射器被配置为将一个或多个信号的位分配给信号星座，并且 将信号的位与信号星座点相关联，其中扩展星座以避免由于编码而导致的带宽扩展，从而在相同带宽内产生实质的网络编码增益。 使用同相/正交（I / Q）调制器调制非二进制LDPC编码数据流，并使用偏振束组合器复用数据流。

    Non-binary LDPC coded mode-multiplexed four-dimensional signaling based on orthogonal frequency division multiplexing
    10.
    发明授权
    Non-binary LDPC coded mode-multiplexed four-dimensional signaling based on orthogonal frequency division multiplexing 有权
    基于正交频分复用的非二进制LDPC编码模式复用四维信令

    公开(公告)号：US09479285B2

    公开(公告)日：2016-10-25

    申请号：US14513671

    申请日：2014-10-14

    Applicant: NEC Laboratories America, Inc.

    Inventor： Ivan B. Djordjevic ,  Ting Wang

    IPC: H03M13/00 ,  H03M13/05 ,  H04J14/04 ,  H04L1/00 ,  H04L27/26 ,  H04L25/02 ,  H04B7/10 ,  H04L5/00

    CPC classification number: H04J14/04 ,  H04B7/10 ,  H04L1/0041 ,  H04L1/0057 ,  H04L1/0058 ,  H04L5/0026 ,  H04L25/022 ,  H04L25/0224 ,  H04L25/0256 ,  H04L27/2627 ,  H04L27/2634 ,  H04L27/2649

    Abstract: Systems and methods for encoding streams of input data using at least two nonbinary low density parity check (NB-LDPC) encoders; generating NB-LDPC coded optimum signal constellations; performing orthogonal frequency division multiplexing (OFDM) on the NB-LDPC coded four-dimensional (4-D) optimum signal constellations; generating signals using mappers, the mappers configured to assign bits of signals to the signal constellations and to associate the bits of the one or more signals with signal constellation points. Output of the 4-D mappers is modulated using a 4-D OFDM transmitter and a 4-D modulator onto a transmission medium using block coded-modulation, and the modulated output is transmitted by mode-multiplexing independent 4-D OFDM data streams onto fiber. The transmitted modulated output is received, mode-demultiplexed, and demodulated using polarization diversity receivers, one per spatial mode, channel estimation and compensation methods are performed to overcome impairments in the transmission medium; and received data is decoded using non-binary decoders.

    Abstract translation: 使用至少两个非二进制低密度奇偶校验（NB-LDPC）编码器对输入数据流进行编码的系统和方法; 生成NB-LDPC编码的最佳信号星座; 对NB-LDPC编码的四维（4-D）最佳信号星座进行正交频分复用（OFDM）; 使用映射器产生信号，映射器被配置为将信号位分配给信号星座并将一个或多个信号的位与信号星座点相关联。 使用块编码调制，使用4-D OFDM发送器和4-D调制器将4-D映射器的输出调制到传输介质上，并且经调制的输出通过将独立的4-D OFDM数据流模式复用传输到 纤维。 传输的调制输出被接收，模式解复用和使用极化分集接收机解调，每个空间模式一个，信道估计和补偿方法被执行以克服传输介质中的损伤; 并且使用非二进制解码器对接收的数据进行解码。

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