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    ULTRA-HIGH-SPEED OPTICAL TRANSPORT BASED ON ADAPTIVE LDPC-CODED MULTIDIMENSIONAL SPATIAL-SPECTRAL SCHEME AND ORTHOGONAL PROLATE SPHEROIDAL WAVE FUNCTIONS
    221.
    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。

    Dynamic Wavelength Virtualization and/or On-Demand Flow Provisioning in Optical Networks
    222.
    发明申请
    Dynamic Wavelength Virtualization and/or On-Demand Flow Provisioning in Optical Networks 有权
    光网络中的动态波长虚拟化和/或按需流量调配

    公开(公告)号：US20140241717A1

    公开(公告)日：2014-08-28

    申请号：US14184787

    申请日：2014-02-20

    Applicant: NEC Laboratories America, Inc.

    Inventor： Neda Cvijetic ,  Philip Nan JI ,  Ting Wang ,  Akihiro Tanaka

    IPC: H04Q11/00 ,  H04J14/02

    CPC classification number: H04Q11/0067 ,  H04J14/0224 ,  H04J14/0267 ,  H04Q2011/0086

    Abstract: A network apparatus used in an optical network is disclosed. The network apparatus includes one or more first tunable and temperature controlled (TTC) lasers, one or more transmitters each of which is connected to one of said one or more TTC lasers, one or more second TTC lasers, one or more digital signal processing (DSP) transponders (TPNDs) each of which is connected to one of said one or more second TTC lasers, one or more receivers, and a controller to control said one or more transmitters and said one or more DSP TPNDs, wherein said one or more transmitters defragment an optical access spectrum, and said one or more DSP TPNDs exploit a newly available spectrum. Other apparatuses, systems, and methods also are disclosed.

    Abstract translation: 公开了一种在光网络中使用的网络设备。 网络设备包括一个或多个第一可调谐和温度控制（TTC）激光器，一个或多个发射器，每个发射器连接到所述一个或多个TTC激光器之一，一个或多个第二TTC激光器，一个或多个数字信号处理 DSP）转发器（TPND），每个转发器（TPND）连接到所述一个或多个第二TTC激光器之一，一个或多个接收器，以及控制器，用于控制所述一个或多个发射器和所述一个或多个DSP TPND，其中所述一个或多个 发射机对光接入频谱进行碎片整理，并且所述一个或多个DSP TPND利用新可用频谱。 还公开了其他装置，系统和方法。

    Next Generation Optical Access Network with Centralized Digital OLT
    224.
    发明申请
    Next Generation Optical Access Network with Centralized Digital OLT 有权
    具有集中数字OLT的下一代光接入网络

    公开(公告)号：US20140056585A1

    公开(公告)日：2014-02-27

    申请号：US13768487

    申请日：2013-02-15

    Applicant: NEC Laboratories America, Inc.

    Inventor： Dayou Qian ,  Ting Wang

    IPC: H04B10/27 ,  H04B10/50 ,  H04B10/40 ,  H04B10/61

    CPC classification number: H04B10/27 ,  H04B10/2507 ,  H04B10/25137 ,  H04B10/272 ,  H04B10/40 ,  H04B10/50 ,  H04B10/516 ,  H04B10/61 ,  H04B10/613 ,  H04B10/616

    Abstract: An optical access network with centralized digital optical line termination OLT including an optical line termination unit having a digital transmitter and a coherent receiver for downstream signal transmitting and upstream signal receiving, and at least one optical network unit ONU with transceiver functions for communicating with the OLT over an optical path, the ONU including intensity modulation and single photodiode detection, wherein the digital transmitter includes digital signal processing DSP, digital-to-analog conversion DAC and analog-to-digital conversion ADC functions that can be shared by all multiple ones of the ONU in the network, the DSP reducing or removing dispersion and non-linearity effects in the network and the coherent receiver enabling performance of the downstream stream signal transmitting to match that of the upstream signal receiving in the OLT.

    Abstract translation: 具有集中数字光线路终端OLT的光接入网络，包括具有数字发射机的光线路终端单元和用于下行信号发射和上行信号接收的相干接收机，以及具有用于与OLT通信的收发机功能的至少一个光网络单元ONU 通过光路，ONU包括强度调制和单光电二极管检测，其中数字发射器包括数字信号处理DSP，数/模转换DAC和模数转换ADC功能，可由所有多个 在网络中的ONU，DSP减少或去除网络中的色散和非线性效应以及相干接收机，使下游流信号发送的性能能够匹配在OLT中接收的上行信号。

    MIMO-OFDM-Based Flexible Rate Intra-Data Center Network
    225.
    发明申请
    MIMO-OFDM-Based Flexible Rate Intra-Data Center Network 有权
    基于MIMO-OFDM的弹性速率数据中心网络

    公开(公告)号：US20140056371A1

    公开(公告)日：2014-02-27

    申请号：US13767181

    申请日：2013-02-14

    Applicant: NEC Laboratories America, Inc.

    Inventor： Philip Nan Ji ,  Ting Wang ,  Yoshiaki Aono

    IPC: H04L27/26

    CPC classification number: H04L27/2697 ,  H04J14/0269 ,  H04J14/0298 ,  H04L27/2649 ,  H04Q2011/0032

    Abstract: An optical network includes receiving inter-rack traffics from transmitter racks, converting by transmitters the inter-rack traffics to respective wavelength division multiplexing WDM optical signals, receiving and routing by a cyclic interleaver the optical signals from the transmitters to output ports in a cyclic manner, converting respective routed optical signals from the cyclic interleaver into respective electrical signals, and demodulating OFDM formats from respective converted optical signals containing signals for respective receiver racks.

    Abstract translation: 光网络包括从发射机机架接收机架间业务，由发射机将机架间业务转换为相应的波分复用WDM光信号，通过循环交织器将光信号从发射机以循环方式传送到输出端口 将来自循环交织器的各个路由光信号转换成各自的电信号，以及从包含相应接收机机架的信号的各个转换的光信号中解调OFDM格式。

    Fiber sensing using supervisory path of submarine cables
    227.
    发明授权
    Fiber sensing using supervisory path of submarine cables 有权

    公开(公告)号：US12078528B2

    公开(公告)日：2024-09-03

    申请号：US17869763

    申请日：2022-07-20

    Applicant: NEC Laboratories America, Inc.

    Inventor： Ming-Fang Huang ,  Shaobo Han ,  Yuheng Chen ,  Milad Salemi ,  Ting Wang

    IPC: G01H9/00 ,  G01D5/353

    CPC classification number: G01H9/004 ,  G01D5/35361

    Abstract: Systems, and methods for automatically identifying an underground optical fiber cable length from DFOS systems in real time and pair it with GPS coordinates that advantageously eliminate the need for in-field inspection/work by service personnel to make such real-time distance/location determinations. As such, inefficient, error-prone and labor-intensive prior art methods are rendered obsolete. Operationally, our method disclosure involves driving vehicles including GPS to generate traffic patterns and automatically mapping traffic trajectory signals from a deployed buried fiber optic cable to locate geographic location(s) of the buried fiber optic cable. Traffic patterns are automatically recognized; slack in the fiber optic cable is accounted for; location of traffic lights and other traffic control devices/structures may be determined; and turns in the fiber optic cable may likewise be determined.

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