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。

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。

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。

公开(公告)号：US20140099126A1

公开(公告)日：2014-04-10

申请号：US14044298

申请日：2013-10-02

Applicant: NEC Laboratories America, Inc.

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

IPC: H04B10/516

CPC classification number: H04B10/5161 ,  H04B10/516

Abstract: The invention is directed to a novel computer implemented method for finding a modulation format that has better receiver sensitivity than modulation formats that are currently being used, with a correlated symbol modulation in which neighboring symbols are coded and decoded together to increase receiver sensitivity.

Abstract translation: 本发明涉及一种用于找到具有比目前使用的调制格式更好的接收机灵敏度的调制格式的新型计算机实现方法，其中相邻符号调制将相邻符号一起编码和解码以增加接收机灵敏度。

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。

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。

公开(公告)号：US20130259055A1

公开(公告)日：2013-10-03

申请号：US13855446

申请日：2013-04-02

Applicant: NEC LABORATORIES AMERICA, INC. ,  NEC CORPORATION

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

IPC: H04Q11/00

CPC classification number: H04Q11/0005 ,  H04L12/28 ,  H04Q11/00 ,  H04Q2011/0016

Abstract: Methods and systems for optical communication in a submarine network are provided. An input signal is received from a terminal at a reconfigurable branching unit (BU), wherein the BU enables bidirectional transmission between any two terminals, and the input signal is demultiplexed into at least one individual waveband or wavelength using at least one demultiplexer. Each demultiplexed waveband is passed through optical switches, with corresponding optical switches for the same demultiplexed waveband provided for transmission in the reverse direction. Independent per-waveband switching is performed using a demultiplexer-switch-multiplexer (DSM) architecture. Each demultiplexed waveband is multiplexed at each output port using at least one multiplexer to combine signals from different sources, and combined signals are transmitted to a destination terminal.

Abstract translation: 提供了海底网络光通信的方法和系统。 在可重构分支单元（BU）处从终端接收输入信号，其中BU使能任何两个终端之间的双向传输，并且使用至少一个解复用器将输入信号解复用为至少一个单独的波段或波长。 每个解复用的波段通过光开关，其中相应的光开关用于相反的解复用波段，用于反向传输。 使用解复用器 - 开关多路复用器（DSM）架构来执行独立的每波段切换。 每个解复用波段在每个输出端口使用至少一个多路复用器进行多路复用以组合来自不同源的信号，并且组合信号被发送到目的地终端。