公开(公告)号：US09071383B2

公开(公告)日：2015-06-30

申请号：US14172468

申请日：2014-02-04

Applicant: NEC Laboratories America, Inc.

Inventor： Ivan B Djordjevic ,  Ting Wang

IPC: H04B10/04 ,  H04J14/06

CPC classification number: H04J14/06 ,  H03M13/255 ,  H03M13/6325 ,  H03M13/6561 ,  H04B10/2581 ,  H04B10/516 ,  H04L1/005 ,  H04L1/0058

Abstract: A system and method for transmitting data, including one or more Low Density Parity Check (LDPC) encoders configured to encode one or more streams of input data; a signal constellation generation module configured to generate one or more signal constellations; one or more modulators configured to generate one or more signals using hybrid multidimensional coded modulation; a modified orthogonal polynomial generation module configured to generate modified orthogonal polynomials for use as electrical basis functions; and one or more mode-multiplexers and transmitters configured to mode-multiplex and transmit one or more LDPC-coded data streams over a transmission medium.

Abstract translation: 一种用于发送数据的系统和方法，包括配置成编码一个或多个输入数据流的一个或多个低密度奇偶校验（LDPC）编码器; 信号星座生成模块，被配置为生成一个或多个信号星座; 一个或多个调制器被配置为使用混合多维编码调制生成一个或多个信号; 修正的正交多项式生成模块，被配置为生成用作电基函数的修正正交多项式; 以及一个或多个模式多路复用器和发射机，被配置为通过传输介质来模式复用和发送一个或多个LDPC编码的数据流。

公开(公告)号：US09059888B2

公开(公告)日：2015-06-16

申请号：US13767181

申请日：2013-02-14

Applicant: NEC Laboratories America, Inc.

Inventor： Philip Nan Ji ,  Ting Wang ,  Yoshiaki Aono

IPC: H04J14/00 ,  H04K1/10 ,  H04L27/28 ,  H04L27/26 ,  H04Q11/00

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。

公开(公告)号：US20150117316A1

公开(公告)日：2015-04-30

申请号：US14589643

申请日：2015-01-05

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

Inventor： Lusheng Ji ,  Chonggang Wang ,  Ting Wang

IPC: H04W40/12

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.

Abstract translation: 数据在可以通过多种技术无线通信的设备的网状网络中路由。 一个或多个这样的设备从旨在接收数据的目的地设备接收广播消息，并且基于广播消息生成第一无线电链路质量度量（RLQM）值。 源设备产生并传递具有嵌入的第一RLQM值的数据量。 如果满足转发标准，则一组中间设备中继数据量; 所述转发标准部分地基于所述第一RLQM值和由所述中间设备集合中的中间设备基于所述广播消息生成的第二RLQM值。 中间设备利用光接口传输数据量。 目的地设备响应于接收到预期数据广播确认信号。

公开(公告)号：US20150104197A1

公开(公告)日：2015-04-16

申请号：US14504428

申请日：2014-10-02

Applicant: NEC Laboratories America, Inc.

Inventor： Ivan Djordjevic ,  Ting Wang

IPC: H04B10/50 ,  H04L1/00

CPC classification number: H04L1/0041 ,  H03M13/00 ,  H03M13/255 ,  H04B10/516 ,  H04B10/6163 ,  H04L1/005 ,  H04L1/0058 ,  H04L25/067 ,  H04L27/3405

Abstract: A method to process applicable to coherent optical channels with either linear or nonlinear phase noise includes: splitting a received sequence of data into clusters of points according to a cumulative log-likelihood function from constellation obtained in a previous iteration; generating new constellation points by calculating a center of mass of the clusters of points; repeating until convergence or until a predetermined number of iterations has been reached to determine a signal constellation; and transmitting signals over the coherent optical channels with nonlinear phase noise using the disclosed signal constellation and LDPC-coded modulation concepts.

Abstract translation: 一种适用于具有线性或非线性相位噪声的相干光信道的方法包括：根据来自先前迭代中获得的星座的累积对数似然函数，将接收到的数据序列分解成点群; 通过计算点聚类的质心产生新的星座点; 重复直到收敛或直到达到预定数量的迭代以确定信号星座; 以及使用所公开的信号星座图和LDPC编码的调制概念，通过具有非线性相位噪声的相干光信道发射信号。

公开(公告)号：US20150043680A1

公开(公告)日：2015-02-12

申请号：US14456427

申请日：2014-08-11

Applicant: NEC Laboratories America, Inc.

Inventor： Eduardo Mateo Rodriquez ,  Fatih Yaman ,  Shaoliang Zhang ,  Ting Wang

IPC: H04L27/20

CPC classification number: H04L27/2067 ,  H04B2201/709709 ,  H04L25/03343

Abstract: This invention proposes an alternative modulation format for channels that present improved performance when such channels co-propagate with existing intensity modulated channels. This modulation format is named Rhombic-QPSK (R-QPSK) and it is designed in such a way that it presents more tolerance to phase noise created by the nonlinear interaction with the legacy channels.

Abstract translation: 本发明提出了一种用于在这种信道与现有的强度调制信道共同传播时呈现改善的性能的信道的替代调制格式。 该调制格式被称为菱形QPSK（R-QPSK），并且它被设计成使得它对由与传统通道的非线性相互作用产生的相位噪声具有更大的容限。

公开(公告)号：US08953939B2

公开(公告)日：2015-02-10

申请号：US13667708

申请日：2012-11-02

Applicant: NEC Laboratories America, Inc.

Inventor： Shaoliang Zhang ,  Dayou Qian ,  Junqiang Hu ,  Lei Xu ,  Ting Wang

IPC: H04J14/06 ,  H04B10/04 ,  H04B10/12 ,  H04B10/50

CPC classification number: H04J14/06 ,  H04B10/5055

Abstract: Disclosed are universal QPSK transmitter structures and methods for generating different QPSK signals exhibiting different polarization schemes, namely PolMux, PolMod and PolSw. The bit rate of the generated signals is variable, thereby allowing the transmitter to adjust to varying network traffic conditions. Advantageously, the generated signals may be detected by analog receivers (PolSw-QPSK) and coherent receivers (PolMux-QPSK, PolMod-QPSK, and PolSw-QPSK).

Abstract translation: 公开了用于产生表现出不同偏振方案的不同QPSK信号的通用QPSK发射机结构和方法，即PolMux，PolMod和PolSw。 所产生的信号的比特率是可变的，从而允许发射机适应不同的网络业务状况。 有利地，所产生的信号可以由模拟接收机（PolSw-QPSK）和相干接收机（PolMux-QPSK，PolMod-QPSK和PolSw-QPSK）来检测。

公开(公告)号：US08897648B2

公开(公告)日：2014-11-25

申请号：US13755627

申请日：2013-01-31

Applicant: NEC Laboratories America, Inc.

Inventor： Neda Cvijetic ,  Milorad Cvijetic ,  Ting Wang

IPC: H04J14/00 ,  H04J4/00 ,  H04B10/00 ,  H04J14/02 ,  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。

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。

公开(公告)号：US08879906B2

公开(公告)日：2014-11-04

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: H04B17/00 ,  H04J14/00 ,  H04J14/02 ,  H04B10/079 ,  H04B10/299

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：US20140308037A1

公开(公告)日：2014-10-16

申请号：US14243068

申请日：2014-04-02

Applicant: NEC Laboratories America, Inc.

Inventor： Junqiang Hu ,  Ting Wang

IPC: H04J14/02 ,  H04J14/08

CPC classification number: H04J14/0257 ,  H04J14/0256 ,  H04J14/0267 ,  H04J14/086

Abstract: A network switch is disclosed with each port having the function of: electrical processing and optical modulation; electrical processing has the ability to identify packet or frame destination; burst mode transmission and receiving capability; uses its pre-assigned time slot to send to the corresponding destination, or receive from the expected source.

Abstract translation: 公开了一种网络交换机，每个端口具有以下功能：电处理和光调制; 电子处理能够识别数据包或帧目的地; 突发模式发送和接收能力; 使用其预分配的时隙发送到相应的目的地，或从预期来源接收。