公开(公告)号：US09813182B2

公开(公告)日：2017-11-07

申请号：US14454031

申请日：2014-08-07

Applicant: NEC Laboratories America, Inc.

Inventor： Philip N. Ji ,  Ryuji Aida ,  Ting Wang

IPC: H04J14/02

CPC classification number: H04J14/021 ,  H04J14/0205 ,  H04J14/0208

Abstract: Systems and methods for data transport, including submarine reconfigurable optical add/drop multiplexers, branching units configured to receive signals from trunk terminals (TTs), and dummy light filters configured to pass useful signals through the filters, and to reflect dummy light. Optical interleavers are configured to separate useful signals into two or more groups of optical channels, and the optical channels are set to a frequency of either a left or a right portion of a total channel bandwidth. De-interleavers merge signal groups together from trunk terminals, and lasers at each of the transponders at the source terminals are configured to adjust a destination of a channel by fine tuning a frequency or wavelength of the one or more signals.

公开(公告)号：US09807476B2

公开(公告)日：2017-10-31

申请号：US15090653

申请日：2016-04-05

Applicant: NEC Laboratories America, Inc.

Inventor： Junqiang Hu ,  Ting Wang

IPC: G08C19/04 ,  H04Q9/00

CPC classification number: H04Q9/00 ,  H04Q2209/10 ,  H04Q2209/40 ,  H04Q2209/823 ,  H04Q2209/883

Abstract: Disclosed is a sensing platform including a server; one or more remote sensing systems coupled to the server, one or more local sensor(s) for target object monitoring; a wireless module coupled to a network through wireless a link; and a processor to read data from local sensor(s) and communicate information through the network using the wireless module. The sensing system has a low power consumption mode in which the processor puts the wireless module and the local sensor(s) in sleep mode or powered off. The processor has a sleep or deep sleep mode, a power-off mode, and a wake up mode, and the local sensor(s) are accessed at a frequency 1/T1 and the wireless module is at lower frequency 1/Tw where Tw>T1, and the server receives monitored value from remote sensing systems and interacts with the remote sensing system.

公开(公告)号：US09784673B2

公开(公告)日：2017-10-10

申请号：US14842589

申请日：2015-09-01

Applicant: NEC Laboratories America, Inc.

Inventor： Ting Wang ,  Yi Weng

IPC: G01N21/00 ,  G01N21/3504 ,  G01N21/27 ,  G01N21/21

CPC classification number: G01N21/3504 ,  G01N21/21 ,  G01N21/27 ,  G01N2201/06113

Abstract: A method and system for optical angular momentum (OAM) spectroscopy includes generating a beam of light having a single OAM mode. A first spectrum of the beam of light is detected and the beam of light is passed through a gas to attenuate the beam of light in accordance with a presence and concentration of a respective gas. A second spectrum the beam of light is coherently detected and a difference between the first and second spectrum for the beam of light is analyzed to determine the presence and concentration of the respective gas.

公开(公告)号：US09733108B2

公开(公告)日：2017-08-15

申请号：US14975252

申请日：2015-12-18

Applicant: NEC Laboratories America, Inc.

Inventor： Neda Cvijetic ,  Giovanni Milione ,  Ezra Ip ,  Ting Wang

IPC: G01B11/00 ,  G01D5/34 ,  G01S17/58 ,  G06F3/03 ,  G01S17/66 ,  G01S7/481 ,  G06F3/01

CPC classification number: G01D5/34 ,  G01B11/002 ,  G01S7/4814 ,  G01S17/58 ,  G01S17/66 ,  G06F3/017 ,  G06F3/0304

Abstract: A method and system for remote sensing using optical orbital angular momentum (OAM)-based spectroscopy for lateral motion detection. The method includes applying an OAM mode on a light beam to generate an OAM light beam, the OAM light beam having an optical OAM spectrum, applying an OAM optical beam tilt on the OAM light beam to generate a tilted OAM light beam, transmitting the tilted OAM light beam on a remote object, such that the remote object interacts with the tilted OAM light beam, receiving a reflected OAM spectrum associated with the remote object, the reflected OAM spectrum having power values of OAM modes on opposite sides of an OAM launch mode, and displaying lateral motion of the remote object based on the reflected OAM spectrum by comparing the power values.

公开(公告)号：US09722634B2

公开(公告)日：2017-08-01

申请号：US14513975

申请日：2014-10-14

Applicant: NEC Laboratories America, Inc.

Inventor： Ivan B. Djordjevic ,  Ting Wang

IPC: H03M13/29 ,  H03M13/00 ,  H03M13/11 ,  H04B10/516 ,  H03M13/25 ,  H04L1/00

CPC classification number: H03M13/1174 ,  H03M13/255 ,  H04B10/516 ,  H04L1/00

Abstract: Systems and methods for data transport, including encoding streams of input data using generalized low-density parity check (GLDPC) encoders, the one or more GLDPC encoders being configured to generate GLDPC coded data streams using a plurality of component local codes to improve error correction strength, employ single-parity checks and two or more local block codes during generation of the GLDPC codes, and enable continuous tuning of code rate using the generated GLDPC codes. Signals may be generated using mappers, the mappers configured to assign bits of signals to signal constellations and to associate the bits of the signals with signal constellation points. The signal may be modulated using an I/Q or 4-D modulator composed of one polarization beam splitter, two I/Q modulators, and one polarization beam combiner. The modulated signals are multiplexed using a mode-multiplexer, transmitted over a transmission medium, and the signals are received and decoded using GLDPC decoders.

公开(公告)号：US20170214463A1

公开(公告)日：2017-07-27

申请号：US15385944

申请日：2016-12-21

Applicant: NEC Laboratories America, Inc.

Inventor： Giovanni Milione ,  Philip Nan Ji ,  Ezra Ip ,  Shaoliang Zhang ,  Yue-Kai Huang ,  Ting Wang

IPC: H04B10/25 ,  H04J14/06 ,  H04B10/2581 ,  H04B10/40 ,  H04B7/04 ,  H04J14/02 ,  H04L5/14

CPC classification number: H04B10/2503 ,  H04B7/0413 ,  H04B10/2581 ,  H04B10/40 ,  H04J14/02 ,  H04J14/06 ,  H04L5/14

Abstract: Systems and methods for optical communication are disclosed that include communicating data using one or more transceiver pairs coupled to a spatial-multiplexer (S-MUX); performing bi-directional transmissions over an elliptical core optical fiber to a spatial-demultiplexer (S-DEMUX) using spatial modes to communicate data in either direction between two transceiver pairs with low crosstalk and without optical circulators or wavelength-division multiplexing (WDM); and communicating data from the S-DEMUX with g one or more transceiver pairs.

公开(公告)号：US09642064B2

公开(公告)日：2017-05-02

申请号：US15132702

申请日：2016-04-19

Applicant: AT&T Intellectual Property I, L.P. ,  NEC Laboratories America, Inc.

Inventor： Lusheng Ji ,  Chonggang Wang ,  Ting Wang

IPC: H04W40/12 ,  H04L12/801 ,  H04L12/823 ,  H04L12/54 ,  H04W84/18

CPC classification number: H04L47/32 ,  H04L12/56 ,  H04L43/08 ,  H04L47/11 ,  H04L47/24 ,  H04L47/35 ,  H04W40/12 ,  H04W84/18 ,  Y02D70/00 ,  Y02D70/22 ,  Y02D70/34

Abstract: Data is routed in a mesh network of devices that can communicate wirelessly through a plurality of technologies. One or more of such devices receive broadcast message(s) from a destination device intended to receive the data, and generate a first radio link quality metric (RLQM) value based on the broadcast message(s). A source device originates and delivers a quantum of data with an embedded first RLQM value. A set of intermediate devices relays the quantum of data if a forwarding criterion is fulfilled; the forwarding criterion is based in part on the first RLQM value and a second RLQM value generated by an intermediate device in the set of intermediate devices based on the broadcast message(s). The intermediate device exploits an optical interface to transmit the quantum of data. The destination device broadcasts an acknowledgement signal in response to receiving intended data.

公开(公告)号：US09571218B2

公开(公告)日：2017-02-14

申请号：US14534312

申请日：2014-11-06

Applicant: NEC Laboratories America, Inc.

Inventor： Philip Ji ,  Ting Wang

IPC: H04B10/00 ,  H04J14/02 ,  H04B10/556

CPC classification number: H04J14/02 ,  H04B10/5561 ,  H04Q11/0005 ,  H04Q2011/0015 ,  H04Q2011/0047

Abstract: A multi direction variable transceiver including a transmitter comprising a subcarrier aggregator including at least one variable transmitter splitter and at least one variable transmitter coupler. The transceiver typically includes a receiver having at least one variable receiver splitter and at least one variable receiver coupler. In some examples, each of the transmitter and the receiver may include a controller for dynamically adjusting a splitting ratio for at least one of the variable receiver splitter, variable receiver coupler, variable transmission splitter and variable transmission coupler.

Abstract translation: 一种多方向可变收发器，包括发射机，包括包括至少一个可变发射机分离器和至少一个可变发射机耦合器的子载波聚合器。 收发器通常包括具有至少一个可变接收机分离器和至少一个可变接收机耦合器的接收机。 在一些示例中，发射机和接收机中的每一个可以包括用于动态地调整可变接收机分离器，可变接收机耦合器，可变传输分配器和可变传输耦合器中的至少一个的分束比的控制器。

公开(公告)号：US09569296B2

公开(公告)日：2017-02-14

申请号：US14293570

申请日：2014-06-02

Applicant: NEC Laboratories America, Inc.

Inventor： Junqiang Hu ,  Ting Wang ,  Sadaichiro Ogushi

IPC: G06F11/00 ,  G06F11/07 ,  G06F7/58

CPC classification number: G06F11/076 ,  G06F7/58 ,  G06F11/0745

Abstract: The invention uses a PRBS pattern generated by transmitter (serializer) as training. At the receiver side, following receiver outputs, a synchronous capturing module is used to capture multiple lanes simultaneously. The captured data is used to calculate the PRBS distance for different lanes. After the distances are obtained, the one with largest latency is used as a reference, to calculate the relative latency with each other lane. This relative latency is further used to calculate the number of shifts for Barrel Shifter and word shifter.

Abstract translation: 本发明使用由发射机（串行器）生成的PRBS模式作为训练。 在接收机侧，跟随接收机输出，同步捕获模块用于同时捕获多个通道。 捕获的数据用于计算不同车道的PRBS距离。 在获得距离之后，将具有最大延迟的一个作为参考，以计算每个其他车道的相对等待时间。 进一步使用这种相对延迟来计算桶式移位器和字移位器的移位数。

公开(公告)号：US09485029B2

公开(公告)日：2016-11-01

申请号：US14747743

申请日：2015-06-23

Applicant: NEC Laboratories America, Inc.

Inventor： Ting Wang ,  Ivan Djordjevic

IPC: H04B10/04 ,  H04B10/532 ,  H03M13/25 ,  H03M13/00

CPC classification number: H04B10/532 ,  H03M13/255 ,  H03M13/6325

Abstract: Systems and methods for communication using an optical transmission system having optical transmitters and receivers includes performing a low-density parity-check (LDPC) encoding; performing nonbinary pm-ary signaling, where p is a prime larger than 2; taking m p-ary symbols at a time and selecting a point from pm-ary signal constellation; after up-sampling and driving amplification, using coordinates of the pm-ary constellation as input of I/Q modulator x (y); combining two independent pm-ary streams corresponding to x and y-polarization states by a polarization beam combiner (PBS) and transmitting data over the optical transmission system.

Abstract translation: 使用具有光发射机和接收机的光传输系统进行通信的系统和方法包括执行低密度奇偶校验（LDPC）编码; 执行非二进制pm-ary信令，其中p是大于2的素数; 一次采取m个p元符号，并从pm-ary信号星座中选择一个点; 在采样和驱动放大之后，使用pm-ary星座的坐标作为I / Q调制器x（y）的输入; 通过偏振光束组合器（PBS）组合对应于x和y偏振状态的两个独立的pm-流，并通过光传输系统传输数据。