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    ORTHOGONAL FREQUENCY DIVISION MULTIPLE ACCESS TIME DIVISION MULTIPLE ACCESS-PASSIVE OPTICAL NETWORKS OFDMA TDMA PON ARCHITECTURE FOR 4G AND BEYOND MOBILE BACKHAUL
    161.
    发明申请
    ORTHOGONAL FREQUENCY DIVISION MULTIPLE ACCESS TIME DIVISION MULTIPLE ACCESS-PASSIVE OPTICAL NETWORKS OFDMA TDMA PON ARCHITECTURE FOR 4G AND BEYOND MOBILE BACKHAUL 有权
    正交频分多路访问时分多路接入无源光网络OFDMA TDMA PON架构4G和超越移动回传

    公开(公告)号：US20130216229A1

    公开(公告)日：2013-08-22

    申请号：US13755627

    申请日：2013-01-31

    Applicant: NEC Laboratories America, Inc.

    Inventor： Neda Cvijetic ,  Milorad Cvijetic ,  Ting Wang

    IPC: H04B10/2575

    CPC classification number: H04B10/25753 ,  H04B10/25754

    Abstract: Systems and methods are provided for network communication using wireless base stations and an optical orthogonal frequency division multiple access (OFDMA) signal generated on an optical wavelength, with the optical OFDMA signal being composed of a plurality of OFDMA subcarriers. A multi-level modulator modulates each of the plurality of OFDMA subcarriers. A single optical wavelength propagates each of the plurality of OFDMA subcarriers to different base stations; a passive optical splitter delivers the optical OFDMA signal to different base stations; and an OFDMA subcarrier de-multiplexer delivers and extracts traffic for each of the base stations in an electronic-domain, wherein the extracted traffic is remodulated in a wireless signal format. Antennas at each of the base stations transmit wireless signals, and the wireless signals are recovered and processed from the base stations.

    Abstract translation: 提供了使用无线基站的网络通信和在光波长上生成的光学正交频分多址（OFDMA）信号的系统和方法，其中OFDMA信号由多个OFDMA子载波组成。 多电平调制器调制多个OFDMA子载波中的每一个。 单个光波长将多个OFDMA子载波中的每一个传播到不同的基站; 无源光分路器将光OFDMA信号传送到不同的基站; 并且OFDMA子载波去复用器在电子域中传送和提取每个基站的业务，其中所提取的业务以无线信号格式被重新调制。 每个基站的天线发送无线信号，并且从基站恢复和处理无线信号。

    Solution for Hitless Protection in High-Speed OTN Framer and Front-End
    163.
    发明申请
    Solution for Hitless Protection in High-Speed OTN Framer and Front-End 有权
    高速OTN成帧器和前端无源保护解决方案

    公开(公告)号：US20130170825A1

    公开(公告)日：2013-07-04

    申请号：US13628572

    申请日：2012-09-27

    Applicant: NEC Laboratories America, Inc.

    Inventor： Junqiang Hu ,  Philip Nan Ji ,  Ting Wang ,  Yoshiaki Aono

    IPC: H04B10/038

    CPC classification number: H04B10/038 ,  H04B10/032

    Abstract: In an optical communication system containing a primary line and backup line card, a method includes providing interfaces for the primary and backup line card, each line card including a transmitter and receiver; and selecting output from the transmitter from either the primary or back up line card including selecting the backup line card when the primary line card encounters a failure.

    Abstract translation: 在包含主线路和备用线路卡的光通信系统中，一种方法包括提供用于主线路和备用线路卡的接口，每个线路卡包括发射机和接收机; 以及从主或备用线卡选择发射机的输出，包括当主线卡遇到故障时选择备用线路卡。

    NONBINARY LDPC CODED MODULATION WITHOUT BANDWIDTH EXPANSION FOR HIGH-SPEED OPTICAL TRANSMISSION
    164.
    发明申请
    NONBINARY LDPC CODED MODULATION WITHOUT BANDWIDTH EXPANSION FOR HIGH-SPEED OPTICAL TRANSMISSION 有权
    非线性LDPC编码调制，无高速光传输的带宽扩展

    公开(公告)号：US20130089326A1

    公开(公告)日：2013-04-11

    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

    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相应信号星座的坐标，所述2b进制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。

    Physimetric-based data security for coded distributed temperature sensing
    165.
    发明授权
    Physimetric-based data security for coded distributed temperature sensing 有权

    公开(公告)号：US12256002B2

    公开(公告)日：2025-03-18

    申请号：US17589863

    申请日：2022-01-31

    Applicant: NEC Laboratories America, Inc.

    Inventor： Qiang Wang ,  Junqiang Hu ,  Jian Fang ,  Yaowen Li ,  Ting Wang

    IPC: H04L9/32 ,  G01K11/32 ,  H04L9/06

    Abstract: Physimetric-based data security for coded distributed temperature sensing (DTS) in which physimetric information is extracted from a coded-DTS interrogator which is unique for each interrogator at each operating run time—and used to reconstruct a final temperature determination from DTS data. The physimetric information includes coded-DTS pulse code and coded-DTS pulse profile information as a key to permit secure sharing with authorized users. The pulse code and pulse profile information are encrypted and made available to an authorized user. The authorized user can then decrypt the pulse code and pulse profile information and subsequently use this key information (pulse profile and pulse code files) to retrieve temperature information from for example, a remote computer providing a continuous raw data feed—without being susceptible to eavesdropping. The pulse profile and pulse code files permit reconstruction of temperature from DTS continuous raw data feed which have no meaningful informational value to an eavesdropper who has no access to the unencrypted pulse profile and pulse code information.

    Dynamic anomaly localization of utility pole wires
    166.
    发明授权
    Dynamic anomaly localization of utility pole wires 有权

    公开(公告)号：US12160090B2

    公开(公告)日：2024-12-03

    申请号：US18492902

    申请日：2023-10-24

    Applicant: NEC Laboratories America, Inc.

    Inventor： Yangmin Ding ,  Yuanda Xu ,  Sarper Ozharar ,  Yue Tian ,  Ting Wang

    IPC: H02G1/02 ,  G01D5/353 ,  G01S19/01

    Abstract: Systems and methods for performing the dynamic anomaly localization of utility pole aerial/suspended/supported wires/cables by distributed fiber optic sensing. In sharp contrast to the prior art, our inventive systems and methods according to aspects of the present disclosure advantageously identify a “location region” on a utility pole supporting an affected wire/cable, thereby permitting the identification and reporting of service personnel that are uniquely responsible for responding to such anomalous condition(s).

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