公开(公告)号：US20140101512A1

公开(公告)日：2014-04-10

申请号：US13911326

申请日：2013-06-06

Applicant: NEC Laboratories America, Inc.

Inventor： Ivan B. Djordjevic ,  Ting Wang

IPC: H03M13/11

CPC classification number: H03M13/1148 ,  H03M13/1102 ,  H03M13/2707 ,  H03M13/31 ,  H03M13/353

Abstract: Systems and methods of transmitting includes one or more low-density parity-check (LDPC) encoders configured to adaptively encode one or more streams of input data by adjusting error correction strength based upon channel conditions. One or more mappers are configured to map one or more encoded data streams to symbols by associating bits of the symbols to points of an optimum signal constellation design (OSCD) based on one or more encoded data streams, the OSCD being decomposed into two or more sub-constellations. A spectral multiplexer is configured to combine symbol streams for the one or more encoded data streams to provide a plurality of spectral band groups. A mode multiplexer is configured to combine spectral contents of the plurality of spectral band groups allocated to a plurality of spatial modes for transmission over a transmission medium.

Abstract translation: 发送系统和方法包括一个或多个低密度奇偶校验（LDPC）编码器，其被配置为通过基于信道条件调整误差校正强度来自适应地编码一个或多个输入数据流。 一个或多个映射器被配置为通过将符号的位与基于一个或多个编码数据流的最佳信号星座图设计（OSCD）的点相关联来将一个或多个编码数据流映射到符号，OSCD被分解为两个或更多个 分星座。 频谱复用器被配置为组合用于一个或多个编码数据流的符号流以提供多个频谱带组。 模式多路复用器被配置为组合分配给多个空间模式的多个频谱带组的频谱内容以便在传输介质上传输。

公开(公告)号：US20140099128A1

公开(公告)日：2014-04-10

申请号：US14044518

申请日：2013-10-02

Applicant: NEC LABORATORIES AMERICA, INC.

Inventor： Eduardo F. Mateo ,  Fatih Yaman ,  Dayou Qian ,  Ting Wang

IPC: H04B10/61

CPC classification number: H04B10/6163

Abstract: An optical communication system includes a digital signal processer coupled to the coherent receiver, said coherent receiver including a nonlinearity compensation module for compensating for nonlinear effects in fiber in the optical link for increasing capacity or transmission distance of the fiber, the nonlinearity compensation module includes a spectral slicing of the signal into bands, computing nonlinear interaction between the bands with parameters opposite to those of the fiber to reverse the non-linear effects in the fiber, and only certain nonlinear interactions between bands are considered thereby reducing complexity of the nonlinearity compensation.

Abstract translation: 光通信系统包括耦合到相干接收机的数字信号处理器，所述相干接收机包括用于补偿光链路中的光纤中的非线性效应的非线性补偿模块，用于增加光纤的容量或传输距离，非线性补偿模块包括 将信号频谱切片成频带，计算具有与光纤相反参数的频带之间的非线性相互作用，以反转光纤中的非线性效应，并且仅考虑频带之间的某些非线性相互作用，从而降低非线性补偿的复杂性。

公开(公告)号：US20140099103A1

公开(公告)日：2014-04-10

申请号：US13903508

申请日：2013-05-28

Applicant: NEC Laboratories America, Inc.

Inventor： Ivan B. Djordjevic ,  Ting Wang

IPC: H04B10/2507

CPC classification number: H04B10/2507 ,  H04B10/616 ,  H04B10/6165

Abstract: Methods and systems for decoding a signal include compensating for impairments in a received signal using at least carrier phase estimation, where residual phase error remains after compensation; calculating symbol log-likelihood ratios (LLRs) for symbols in the compensated signal using Monte Carlo integration; demapping the symbols in the compensated signal using the symbol LLRs and extrinsic information from signal decoding to produce one or more estimated codewords; and decoding each estimated codeword with a decoder that generates a decoded codeword and extrinsic information.

Abstract translation: 用于对信号进行解码的方法和系统包括使用至少载波相位估计补偿接收信号中的损伤，其中在补偿之后残留相位误差; 使用蒙特卡罗积分计算补偿信号中的符号的符号对数似然比（LLR）; 使用来自信号解码的符号LLR和外在信息对补偿信号中的符号进行解映射以产生一个或多个估计码字; 以及用生成解码码字和外在信息的解码器解码每个估计码字。

公开(公告)号：US20130343755A1

公开(公告)日：2013-12-26

申请号：US13915874

申请日：2013-06-12

Applicant: NEC Laboratories America, Inc.

Inventor： Neda Cvijetic ,  Maria Ioanna Angelou ,  Ankitkumar Patel ,  Milorad Cvijetic ,  Philip Nan Ji ,  Ting Wang

IPC: H04Q11/00

CPC classification number: H04Q11/0066 ,  H04J14/0227 ,  H04J14/0282

Abstract: A software-defined (SD) optical network is disclosed. An SD optical line terminal (OLT) includes a global SD controller, one or more SD OLT drivers connected to the global SD controller, and an underlying hardware component connected to each of said one or more SD OLT drivers. An SD optical network unit (ONU) includes a local SD controller, one or more SD optical network unit (ONU) drivers connected to the local SD controller, and an underlying hardware component connected to each of said one or more SD ONU drivers, wherein the local SD controller manages said one or more SD ONU drivers by issuing commands communicated to said one or more SD ONU drivers, and wherein each of said one or more SD ONU drivers implements a required function on the underlying hardware component. Other apparatuses, systems, and methods also are disclosed.

Abstract translation: 公开了一种软件定义（SD）光网络。 SD光线路终端（OLT）包括全局SD控制器，连接到全局SD控制器的一个或多个SD OLT驱动器和连接到所述一个或多个SD OLT驱动器中的每一个的底层硬件组件。 SD光网络单元（ONU）包括本地SD控制器，连接到本地SD控制器的一个或多个SD光网络单元（ONU）驱动器和连接到所述一个或多个SD ONU驱动器中的每一个的底层硬件组件，其中 本地SD控制器通过发出传送给所述一个或多个SD ONU驱动器的命令来管理所述一个或多个SD ONU驱动器，并且其中所述一个或多个SD ONU驱动器中的每一个在底层硬件组件上实现所需功能。 还公开了其他装置，系统和方法。

公开(公告)号：US20130259474A1

公开(公告)日：2013-10-03

申请号：US13855104

申请日：2013-04-02

Applicant: NEC LABORATORIES AMERICA, INC.

Inventor： Philip N. Ji ,  Yoshiaki Aono ,  Ting Wang

IPC: H04J14/02

CPC classification number: H04J14/0212 ,  H04J14/0204 ,  H04J14/0205 ,  H04J14/0206 ,  H04J14/0217

Abstract: The present principles are directed to a transponder aggregator-based optical loopback in a multi-degree colorless, directionless, contention-less, reconfigurable optical add/drop multiplexer. The multiplexer includes a reconfigurable optical add/drop multiplexer section for performing connect operations for wavelength division multiplexing signals among all degrees. The section has a plurality of subsections. Each of the subsections corresponds to a respective one of the degrees and has an optical separator at an input side and an optical combiner at an output side. The multiplexer further includes a transponder aggregator section having a split-and-select switch-based transponder aggregator. The multiplexer also includes an optical line loopback having a connection path between the optical separator at the input side and the optical combiner at the output side of at least one of the subsections.

Abstract translation: 本原理涉及在多度无色，无方向，无竞争的可重配置的光分插复用器中的基于转发器聚合器的光环回。 复用器包括可重配置的光分插复用器部分，用于在所有度之间执行波分复用信号的连接操作。 该部分有多个子部分。 每个子部分对应于相应的度数，并且在输入侧具有光学分离器，在输出侧具有光学合成器。 多路复用器还包括具有分组选择基于交换机的应答器聚合器的转发器聚合器部分。 复用器还包括具有在输入侧的光学分离器与至少一个子部分的输出侧的光学组合器之间的连接路径的光学线路环回。

公开(公告)号：US20130094851A1

公开(公告)日：2013-04-18

申请号：US13654960

申请日：2012-10-18

Applicant: NEC Laboratories America, Inc. ,  NEC Corporation

Inventor： Lei Xu ,  Shaoliang Zhang ,  Fatih Yaman ,  Ting Wang ,  Yoshihisa Inada ,  Takaaki Ogata ,  Yasuhiro Aoki

IPC: H04B10/08

CPC classification number: H04B10/07957 ,  H04B10/07 ,  H04B10/07953 ,  H04B10/2507 ,  H04B10/25073 ,  H04B10/2543 ,  H04B2210/254

Abstract: A method includes evaluating an optical signal spectrum for estimated filtering parameters of an optical spectral filtering device for shaping optical signal spectrum, determining a feedback for fine tuning the optical spectral filtering device for nonlinearity tolerance enhancement in the optical transmission system, responsive to received optical signal quality in the optical signal spectrum; and using the feedback to adjust said optical spectral filtering device for predetermined shaping and predetermined fiber nonlinearity tolerance in the optical transmission system.

Abstract translation: 一种方法包括评估用于光谱滤波装置的估计滤波参数的光信号频谱，用于整形光信号频谱，确定用于微光调整光谱滤波装置的反馈以对光传输系统中的非线性容限增强响应于接收到的光信号 光信号光谱质量; 并且使用所述反馈来调整所述光谱滤波装置以用于所述光传输系统中的预定成形和预定的光纤非线性公差。

公开(公告)号：US20130089323A1

公开(公告)日：2013-04-11

申请号：US13644470

申请日：2012-10-04

Applicant: NEC Laboratories America, Inc.

Inventor： Ankitkumar N. Patel ,  Philip Nan Ji ,  Ting Wang ,  Yoshiaki Aono

IPC: H04J14/02

CPC classification number: H04J14/02 ,  H04B10/0793 ,  H04B10/07953 ,  H04B10/299 ,  H04J14/021 ,  H04J14/0227 ,  H04J14/0271

Abstract: A method for optimal combined 2R/3R regenerators placement for optical transmission includes determining an optimal placement of multiple 2R and 3R regenerators that minimizes bit error rate BER at a destination node, determining an optimal number of the 2R and 3R regenerators that minimizes a total cost while satisfying the BER at the destination node, and determining an optimal placement of the 2R and 3R regenerators along a route in the optical transmission.

Abstract translation: 用于光传输的最佳组合的2R / 3R再生器放置的方法包括确定最小化目的地节点处的误码率BER的多个2R和3R再生器的最佳布置，确定最小化总成本的2R和3R再生器的最佳数量 同时满足目的地节点处的BER，并且确定2R和3R再生器沿着光传输中的路由的最佳放置。

公开(公告)号：US20130077972A1

公开(公告)日：2013-03-28

申请号：US13628320

申请日：2012-09-27

Applicant: NEC LABORATORIES AMERICA, INC.

Inventor： Jingjing Zhang ,  Ting Wang ,  Naoto Maeda

IPC: H04L12/12

CPC classification number: H04L12/12 ,  H04Q11/0067 ,  H04Q2011/0079 ,  Y02D50/40 ,  Y02D50/42

Abstract: A method sets certain downstream traffic scheduling rules at an optical line terminal OLT and certain sleep control rules at optical network units ONUs. Both downstream traffic scheduling rules and sleep control rules are common information owned by both the OLT and ONUs. The method sets the traffic scheduling rules that each ONU is allocated with some time slots every cycle if the ONU has downstream traffic. Rather than using a control message to notify ONUs with their queue status, the method lets ONUs infer whether its downstream queue is empty or not based on downstream traffic scheduling and lets the OLT infer the status of an ONU based on sleep control rules.

Abstract translation: 一种方法在光线路终端OLT设置某些下行流量调度规则，并在光网络单元ONU设置某些睡眠控制规则。 下行流量调度规则和睡眠控制规则都是OLT和ONU拥有的常用信息。 如果ONU具有下行流量，则该方法每个周期设置每个ONU分配了一些时隙的流量调度规则。 该方法不是使用控制消息通知其具有队列状态的ONU，而是使ONU根据下游业务调度来推断其下行队列是否为空，并允许OLT根据睡眠控制规则来推断ONU的状态。

公开(公告)号：US20250146842A1

公开(公告)日：2025-05-08

申请号：US18932877

申请日：2024-10-31

Applicant: NEC Laboratories America, Inc.

Inventor： Yangmin Ding ,  Ting Wang ,  Yue Tian ,  Sarper Ozharar ,  Zhuocheng Jiang ,  Yanchao Wang

IPC: G01D5/353

Abstract: Methods and systems for anomaly detection include measuring time-series data about a system using an optical sensing system. The time-series data is adapted to natural language data. One or more anomaly detection models are selected based on the natural language data and a task. An anomaly is detected in the system using the selected one or more anomaly detection models. A corrective action is performed responsive to the anomaly.

公开(公告)号：US12072233B2

公开(公告)日：2024-08-27

申请号：US17716403

申请日：2022-04-08

Applicant: NEC Laboratories America, Inc.

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

IPC: G01H9/00 ,  G06N3/04 ,  G06N3/08 ,  G06N20/20 ,  G06Q50/06

CPC classification number: G01H9/004 ,  G06N3/04 ,  G06N3/08 ,  G06N20/20 ,  G06Q50/06

Abstract: Systems and methods for reducing work conflicts is provided. The method includes receiving a vibrational signal from a utility pole; identifying a location and type of field work on the utility pole from one or more features of the vibrational signal utilizing a trained neural network; and communicating the location and type of field work to a third party.