公开(公告)号：US20160301367A1

公开(公告)日：2016-10-13

申请号：US15089987

申请日：2016-04-04

Applicant: NEC Laboratories America, Inc.

Inventor： Junqiang Hu ,  Ting Wang

IPC: H03F1/26 ,  G01N21/39

CPC classification number: G01N21/39 ,  G01J3/28 ,  G01J3/4338 ,  G01J2001/4242 ,  G01N2201/06113 ,  G01N2201/12

Abstract: A gas sensing system includes a signal generator including a wavelength tunable laser, the signal generator providing a first periodic signal and a second periodic signal, wherein the first periodic signal comprises a wavelength scanning signal and the second periodic signal comprises a modulation signal; an optical signal absorption path which is wavelength selective, wherein the generated signal covers at least one of the absorbance band; a signal detector that uses lock-in detection to detect a second harmonic of the second periodic signal after absorption, the signal detector further including a local reference generator, a multiplier, and a low pass filter; a local reference includes a first path (ref1) that outputs sinusoidal signal with frequency equals to that of the second signal in signal generator, and a second path (ref2) that outputs sinusoidal signal of two times ref1 frequency; and a local reference generator having a first phase shifter that is configurable from 0 to 2π and a second phase shifter that shifts 90-degree, wherein the first phase shifter is for an alignment of ref1 with the modulation signal and the second phase shifter provides 90-degree shifts for ref2 from ref1, wherein the first and second paths (ref1 and ref2) are selected by a switch, wherein the switch uses the first path during initialization and the second path for normal operation.

Abstract translation: 气体感测系统包括信号发生器，其包括波长可调谐激光器，信号发生器提供第一周期信号和第二周期信号，其中第一周期信号包括波长扫描信号，第二周期信号包括调制信号; 一种波长选择性的光信号吸收路径，其中产生的信号覆盖吸收带中的至少一个; 信号检测器，其使用锁定检测来检测吸收之后的第二周期信号的二次谐波，所述信号检测器还包括本地参考发生器，乘法器和低通滤波器; 本地参考包括输出频率等于信号发生器中的第二信号的正弦信号的第一路径（ref1）和输出两倍ref1频率的正弦信号的第二路径（ref2）; 以及具有可配置为0至2π的第一移相器和90度移位的第二移相器的本地参考发生器，其中第一移相器用于ref1与调制信号的对准，而第二移相器提供90 ref2从ref1进行偏移，其中第一和第二路径（ref1和ref2）由开关选择，其中开关在初始化期间使用第一路径，并且第二路径用于正常操作。

公开(公告)号：US09450805B2

公开(公告)日：2016-09-20

申请号：US14044177

申请日：2013-10-02

Applicant: NEC Laboratories America, Inc.

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

IPC: G06F15/173 ,  H04L12/24 ,  H04L12/721 ,  H04L12/717

CPC classification number: H04L41/00 ,  H04L41/022 ,  H04L41/04 ,  H04L41/044 ,  H04L41/12 ,  H04L45/38 ,  H04L45/42

Abstract: A generic centralized, software-defined networking configuration for connecting network is defined as a generic multi-layer topology network entities interconnected either vertically or horizontally regardless of the employed network topology/graph). This centralized configuration enables establishment of a connection between any two networking entities by 1) bypassing intermediate protocol layers and 2) eliminating any handshaking between peer elements of the same layer. The centralized software-defined controller notifies in parallel all involved network entities along a connection path to take all necessary actions (i.e. reconfiguration) to establish the new connection. The centralized controller has authority to control only entities that are software-defined SD.

Abstract translation: 用于连接网络的通用集中式软件定义网络配置被定义为垂直或水平互连的通用多层拓扑网络实体，而不管采用的网络拓扑/图形如何）。 这种集中式配置可以通过以下方式建立任何两个组网实体之间的连接：1）绕过中间协议层，2）消除同一层的对等体元素之间的任何握手。 集中式软件定义的控制器并行地通过连接路径并行地通知所有涉及的网络实体，以采取所有必要的动作（即重新配置）来建立新的连接。 集中控制器具有仅控制软件定义SD的实体的权限。

公开(公告)号：US20160234753A1

公开(公告)日：2016-08-11

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

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：US09414134B2

公开(公告)日：2016-08-09

申请号：US14504597

申请日：2014-10-02

Applicant: NEC Laboratories America, Inc.

Inventor： Ting Wang ,  Ryuji Aida ,  Philip Ji

IPC: H04J14/02 ,  H04B10/00 ,  H04Q11/00 ,  H04B10/80

CPC classification number: H04Q11/0005 ,  H04B10/80 ,  H04J14/0205 ,  H04J14/0212 ,  H04J14/0213 ,  H04J14/0221 ,  H04Q11/0062 ,  H04Q2011/0037

Abstract: Systems and methods for method for data transport using secure reconfigurable branching units, including receiving signals from a first trunk terminal and a second trunk terminal by branching units. Broadcasting is prevented for secure information delivery by dividing, within the branching units, the one or more signals from the first trunk terminal and the second trunk terminal into two or more sections, and sending the two or more sections to an optical coupler. Signals may be received from a branch terminal by one or more branching units using two fiber pairs, and the signals from the branch terminals may be divided into two or more groups of optical sections, wherein one of the sections includes dummy light. The divided signals from the first trunk terminal, the second trunk terminal, and dummy light from the branch terminal may be merged, and the merged signal sent to the branch terminal.

Abstract translation: 使用安全可重配置分支单元的数据传输方法的系统和方法，包括通过分支单元从第一中继线端子和第二干线端子接收信号。 通过在分支单元内将来自第一中继线端子和第二干线端子的一个或多个信号分成两个或更多个部分，并将两个或更多个部分发送到光耦合器，防止了安全信息传送的广播。 可以通过使用两个光纤对的一个或多个分支单元从分支终端接收信号，并且来自分支终端的信号可以被划分为两组或更多组光学部分，其中一个部分包括虚拟光。 来自第一中继线端子，第二干线端子和来自分支端子的虚拟光的分频信号可以被合并，并且合并信号被发送到分支终端。

公开(公告)号：US20160146937A1

公开(公告)日：2016-05-26

申请号：US14946304

申请日：2015-11-19

Applicant: NEC Laboratories America, Inc.

Inventor： Giovanni Milione ,  Neda Cvijetic ,  Ting Wang

IPC: G01S17/02 ,  G01S7/481

CPC classification number: G01S7/4818 ,  G01J4/04 ,  G01S7/4802 ,  G01S7/4814 ,  G01S7/4816 ,  G01S7/499

Abstract: A system and method for remote object sensing which features a spatially polarization-inhomogeneous light beam that is directed on the remote object. A polarimetry receiver receives the light beam after it contacts the remote object. The changes in the spatially polarization-inhomogeneous light beam from contacting the remote object are a result of spatial features of the remote object. The polarimetry receiver is configured to measure the spatially inhomogeneous electric field of the light beam after it contacts the remote object and compute the changes in the spatially polarization-inhomogeneous light beam in order to detect spatial features of the remote object. The system obtains high-resolution, real-time information concerning important spatial features of the remote object.

Abstract translation: 一种用于远程物体感测的系统和方法，其特征在于朝向远程物体的空间偏振不均匀光束。 偏光镜接收器在接触到远程物体之后接收光束。 与远程物体接触的空间极化不均匀光束的变化是远程物体的空间特征的结果。 偏振接收器被配置为在光束接触到远程物体之后测量光束的空间不均匀电场，并计算空间偏振不均匀光束中的变化，以便检测远程物体的空间特征。 该系统获得关于远程物体重要空间特征的高分辨率实时信息。

公开(公告)号：US20160123877A1

公开(公告)日：2016-05-05

申请号：US14931568

申请日：2015-11-03

Applicant: NEC Laboratories America, Inc.

Inventor： Neda Cvijetic ,  Giovanni Milione ,  Ting Wang

IPC: G01N21/55 ,  G01N21/27 ,  G01N21/21

Abstract: A method and system for remote sensing using optical orbital angular momentum (OAM)-based spectroscopy for object recognition. The method includes applying an OAM state on a light beam to generate an optical OAM spectrum, transmitting the light beam on a remote object, receiving a reflected optical OAM spectrum associated with the remote object, and providing a high resolution image of the remote object based on the reflected optical OAM spectrum.

Abstract translation: 一种使用基于光学轨道角动量（OAM）的光谱进行物体识别的遥感方法和系统。 该方法包括在光束上应用OAM状态以产生光学OAM光谱，将光束传输到远程物体上，接收与远程物体相关联的反射光学OAM光谱，以及提供远程物体的高分辨率图像 在反射光学OAM光谱上。

公开(公告)号：US20160109361A1

公开(公告)日：2016-04-21

申请号：US14842589

申请日：2015-09-01

Applicant: NEC Laboratories America, Inc.

Inventor： Ting Wang ,  Yi Weng

IPC: G01N21/3504 ,  G01N21/27

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.

Abstract translation: 用于光学角动量（OAM）光谱的方法和系统包括产生具有单个OAM模式的光束。 检测光束的第一光谱，并且根据相应气体的存在和浓度，检测光束通过气体以衰减光束。 第二个光谱的光束被相干检测，并且分析光束的第一和第二光谱之间的差异，以确定相应气体的存在和浓度。

公开(公告)号：US20160028475A1

公开(公告)日：2016-01-28

申请号：US14808414

申请日：2015-07-24

Applicant: NEC Laboratories America, Inc.

Inventor： Shaoliang Zhang ,  Fatih Yaman ,  Yue-Kai Huang ,  Ting Wang

IPC: H04B10/077 ,  H04B10/564 ,  G02F1/01

CPC classification number: H04B10/0775 ,  G02F1/0123 ,  H04B10/50575 ,  H04B10/564 ,  H04B2210/075

Abstract: A system for centralized automatic bias control for a plurality of modulators, including a coupler for coupling output of each of the plurality of modulators to generate a combined modulator output. A pilot insertion device inserts a pilot tone into each of the plurality of modulators such that a different pilot tone frequency is inserted for each of the plurality of modulators. A monitoring device iteratively monitoring power (Pt) of each inserted pilot tone over time to determine whether a current modulator bias is optimal for each of the plurality of modulators, and an adjuster device iteratively adjusts the modulator bias for each of the plurality of modulators for which the current modulator bias is determined to be sub-optimal until a threshold condition has been met.

Abstract translation: 一种用于多个调制器的集中自动偏置控制的系统，包括用于耦合所述多个调制器中的每一个的输出的耦合器以产生组合的调制器输出。 导频插入装置将导频音插入到多个调制器中的每一个中，使得为多个调制器中的每一个插入不同的导频音频率。 一种监测装置，迭代地监视随时间推移的每个插入的导频音的功率（Pt），以确定所述多个调制器中的每个调制器的当前调制器偏置是否最佳，并且调节器装置迭代地调整所述多个调制器中的每一个的调制器偏置，以供 其中电流调制器偏置被确定为次优，直到满足阈值条件。

公开(公告)号：US09203519B2

公开(公告)日：2015-12-01

申请号：US14044298

申请日：2013-10-02

Applicant: NEC Laboratories America, Inc.

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

IPC: H04L27/20 ,  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编码并一起解码以增加接收机灵敏度。

公开(公告)号：US09184873B2

公开(公告)日：2015-11-10

申请号：US14218116

申请日：2014-03-18

Applicant: NEC Laboratories America, Inc.

Inventor： Ivan B Djordjevic ,  Ting Wang

IPC: H04J14/02 ,  H04L1/00 ,  H04J14/06 ,  H04B10/2581 ,  H04B10/516 ,  H04B10/61 ,  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。