公开(公告)号：US09066351B2

公开(公告)日：2015-06-23

申请号：US13946499

申请日：2013-07-19

Applicant: NEC Laboratories America, Inc.

Inventor： Karthikeyan Sundaresan ,  Mohammad A. Khojastepour ,  Sampath Rangarajan

IPC: H04W72/04 ,  H04W4/00

CPC classification number: H04W72/048 ,  H04W4/00 ,  H04W4/50

Abstract: Systems and methods for data transmission include categorizing users into one of a plurality of profiles using a processor based on device and channel characteristics. Each of the plurality of profiles is mapped to one of a plurality of transmission schemes. Data is combined for a plurality of users categorized with different profiles for data transmission.

Abstract translation: 用于数据传输的系统和方法包括使用基于设备和信道特性的处理器将用户分类为多个简档之一。 多个简档中的每个被映射到多个传输方案中的一个。 数据被组合用于被分类用于数据传输的不同简档的多个用户。

公开(公告)号：US09055447B2

公开(公告)日：2015-06-09

申请号：US14182479

申请日：2014-02-18

Applicant: NEC Laboratories America, Inc.

Inventor： Neda Cvijetic

IPC: H04W16/18

CPC classification number: H04W16/18 ,  H04W40/24

Abstract: A method implemented in a network controller used in a mobile backhaul (MBH) network is disclosed. The method includes receiving one or more physical layer parameters from MBH transceivers in the MBH network, computing an admissible set of rate matrices, computing a capacity region based on the admissible set of rate matrices, deciding MBH transmission topology, and transmitting the decision to the MBH transceivers. Other apparatuses, systems, and methods also are disclosed.

Abstract translation: 公开了一种在移动回程（MBH）网络中使用的网络控制器中实现的方法。 该方法包括从MBH网络中的MBH收发器接收一个或多个物理层参数，计算速率矩阵的允许集合，基于允许的速率矩阵集计算容量区域，确定MBH传输拓扑，并将决定传送到 MBH收发器。 还公开了其他装置，系统和方法。

公开(公告)号：US20150149434A1

公开(公告)日：2015-05-28

申请号：US14506625

申请日：2014-10-04

Applicant: NEC Laboratories America, Inc.

Inventor： Ziyang Liu ,  Vahit Hacigumus

IPC: G06F17/30

CPC classification number: G06F17/30466

Abstract: Systems and methods are disclosed for query processing in a big data analytics platform by enumerating plans for a current query using a processor; building a dominance graph for the current query; for each plan, determining a regret value and a score for the plan based on the regret value and cost; and selecting query plans in an online fashion for query processing in big data analytics platforms where intermediate results are materialized and can be reused later.

Abstract translation: 通过枚举使用处理器的当前查询的计划，在大数据分析平台中公开了用于查询处理的系统和方法; 构建当前查询的优势图; 对于每个计划，根据遗憾价值和成本确定计划的遗憾价值和得分; 并以在线方式选择大型数据分析平台中的查询处理查询计划，其中中间结果实现并可以稍后重用。

公开(公告)号：US20150147060A1

公开(公告)日：2015-05-28

申请号：US14551973

申请日：2014-11-24

Applicant: NEC Laboratories America, Inc.

Inventor： Ankitkumar N. Patel ,  PHILIP NAN JI ,  YAWEI YIN

IPC: H04Q11/00 ,  H04J14/02

CPC classification number: H04Q11/0005 ,  H04J14/0202 ,  H04J14/0205 ,  H04J14/0212 ,  H04J14/0283 ,  H04Q11/0071 ,  H04Q2011/0052

Abstract: A hybrid electro-optical data center system includes multiple tiers. A bottom tier has one or more bottom tier instances, with each bottom tier instance including one or more racks, an electro-optical switch corresponding to each rack, and a first bottom tier optical loop providing optical connectivity between the electro-optical switches of the respective bottom tier instance. At least one server within each rack is electrically connected to the respective electro-optical switch and at least one super-server within each rack is electrically and optically connected to the respective electro-optical switch. A top tier includes electro-optical switches, each electrically connected to an electro-optical switch in a respective bottom tier instance, a first top tier optical loop providing optical connectivity between the electro-optical switches of the top tier, and one or more optical add/drop modules providing optical connectivity between the first bottom tier optical loop and the first top tier optical loop.

Abstract translation: 混合电光数据中心系统包括多层。 底层具有一个或多个底层实例，每个底层实例包括一个或多个机架，对应于每个机架的电光开关，以及提供光电开关之间的光学连接的第一底层光环路 各自底层实例。 每个机架内的至少一个服务器电连接到相应的电光开关，并且每个机架内的至少一个超级服务器电和光学连接到相应的电光开关。 顶层包括电光开关，每个电光开关在相应的底层实例中电连接到电光开关，第一顶层光环路提供顶层的电光开关之间的光学连接，以及一个或多个光学 在第一底层光环路和第一顶层光环路之间提供光连接的添加/分出模块。

公开(公告)号：US09042601B2

公开(公告)日：2015-05-26

申请号：US14108295

申请日：2013-12-16

Applicant: NEC Laboratories America, Inc.

Inventor： Xiaoyu Wang ,  Shenghuo Zhu ,  Ming Yang ,  Yuanqing Lin

IPC: G06K9/00 ,  G06K9/66

CPC classification number: G06K9/66 ,  G06K9/4614 ,  G06K9/4676 ,  G06K9/6257

Abstract: Systems and methods are disclosed for object detection by receiving an image and extracting features therefrom; applying a learning process to determine sub-regions and select predetermined pooling regions; and performing selective max-pooling to choose one or more feature regions without noises.

Abstract translation: 公开了通过接收图像并从其中提取特征的对象检测的系统和方法; 应用学习过程来确定子区域并选择预定的汇集区域; 并执行选择性最大化池选择一个或多个没有噪声的特征区域。

公开(公告)号：US09036723B2

公开(公告)日：2015-05-19

申请号：US14032449

申请日：2013-09-20

Applicant: NEC Laboratories America, Inc.

Inventor： Shaoliang Zhang ,  Ting Wang

IPC: H04L7/04 ,  H04L27/26

CPC classification number: H04L7/042 ,  H04L27/2601 ,  H04L27/2613 ,  H04L27/2657 ,  H04L27/2663 ,  H04L27/2671 ,  H04L27/2672 ,  H04L27/2675

Abstract: A training symbol with two identical halves as well as a pilot-tone at a center frequency is used for both timing synchronization and carrier frequency offset estimation. A timing synchronization is achieved by finding a peak of a cross-correlation function of the two halves in the first symbol. A fraction part of the frequency offset FO is then calculated from a phase difference between the two halves of the first training symbol. Then, the received signal is compensated for the fraction part of FO, and, an integer part of the FO is obtained by counting the shifted positions of the pilot-tone peak in the frequency domain.

Abstract translation: 具有两个相同的一半的训练符号以及中心频率的导频被用于定时同步和载波频率偏移估计。 通过找到第一符号中两个半部的互相关函数的峰值来实现定时同步。 然后根据第一训练符号的两半之间的相位差来计算频率偏移FO的分数部分。 然后，对FO的分数部分补偿接收到的信号，并且通过对频域中的导频音峰的偏移位置进行计数来获得FO的整数部分。

公开(公告)号：US09020198B2

公开(公告)日：2015-04-28

申请号：US14108212

申请日：2013-12-16

Applicant: NEC Laboratories America, Inc.

Inventor： Xiaoyu Wang ,  Shenghuo Zhu ,  Ming Yang ,  Yuanqing Lin

IPC: G06K9/00 ,  G06K9/62

CPC classification number: G06K9/6232 ,  G06K9/4614 ,  G06K9/4676 ,  G06K9/6257

Abstract: Systems and methods are disclosed for object detection by receiving an image; segmenting the image; extracting features from the image; and performing a dimension-wise spatial layout selection to pick up dimensions inside a discriminative spatial region for classification.

Abstract translation: 公开了通过接收图像进行物体检测的系统和方法; 分割图像; 从图像中提取特征; 以及执行维度空间布局选择以拾取鉴别空间区域内的维度以进行分类。

公开(公告)号：US09020061B2

公开(公告)日：2015-04-28

申请号：US14198653

申请日：2014-03-06

Applicant: NEC Laboratories America, Inc.

Inventor： Narayan Prasad ,  Guosen Yue ,  Mohammad Khojastepour ,  Sampath Rangarajan

IPC: H04B7/02 ,  H04L1/02 ,  H04L25/03 ,  H04B7/04 ,  H04B7/06 ,  H04L1/06

CPC classification number: H04B7/0469 ,  H04B7/0456 ,  H04B7/0478 ,  H04B7/0486 ,  H04B7/0617 ,  H04B7/0626 ,  H04B7/0641 ,  H04B7/065 ,  H04L1/06 ,  H04L25/0391 ,  H04L27/20

Abstract: A method implemented in a base station used in a wireless communications system is disclosed. The method comprises having a codebook including a plurality of precoding matrices, precoding data with one of the plurality of precoding matrices, and transmitting, to a user equipment, the precoded data, wherein each precoding matrix W satisfies W=W(1)W(2), where first matrix W(1) is chosen from first codebook (1), and second matrix W(2) is chosen from a second codebook. Other apparatuses, systems, and methods also are disclosed.

Abstract translation: 公开了一种在无线通信系统中使用的基站中实现的方法。 该方法包括具有包括多个预编码矩阵的码本，与多个预编码矩阵之一进行预编码数据，并向用户设备发送预编码数据，其中每个预编码矩阵W满足W = W（1）W（ 2），其中从第一码本（1）中选择第一矩阵W（1），并且从第二码本中选择第二矩阵W（2）。 还公开了其他装置，系统和方法。

公开(公告)号：US09014568B2

公开(公告)日：2015-04-21

申请号：US13768487

申请日：2013-02-15

Applicant: NEC Laboratories America, Inc.

Inventor： Dayou Qian ,  Ting Wang

IPC: H04B10/00 ,  H04B10/04 ,  H04B10/06 ,  H04B10/27 ,  H04B10/61 ,  H04B10/50 ,  H04B10/40 ,  H04B10/272 ,  H04B10/516 ,  H04B10/2507 ,  H04B10/2513

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：US09014290B2

公开(公告)日：2015-04-21

申请号：US14082695

申请日：2013-11-18

Applicant: NEC Laboratories America, Inc.

Inventor： Mohammad A. Khojastepour ,  Sampath Rangarajan

IPC: H04B7/02 ,  H04L25/03 ,  H04B7/04 ,  H04B7/06

CPC classification number: H04L25/03955 ,  H04B7/0417 ,  H04B7/0639 ,  H04L25/03898

Abstract: There is provided a method performed by a transmitter in a multi-user communication system. The method includes transmitting a first part of a codeword to a plurality of receivers over a communication channel in a transmission. The method further includes receiving feedback on the transmission of the first part of the codeword. The method also includes providing an artificial channel having channel parameters adjustable responsive to the received feedback. The method additionally includes virtually feeding the artificial channel with the first part of the codeword to generate artificial channel output data. The method further includes encoding a second part of the codeword for transmission to the plurality of receivers over the communication channel responsive to the artificial channel output data. The method also includes transmitting the encoded signals to the plurality of receivers over the communication channel.

Abstract translation: 提供了一种由多用户通信系统中的发射机执行的方法。 该方法包括通过传输中的通信信道将码字的第一部分发送到多个接收机。 该方法还包括接收关于码字的第一部分的传输的反馈。 该方法还包括提供具有响应于所接收的反馈可调节的信道参数的人造通道。 该方法还包括虚拟地将人造通道与码字的第一部分进行馈送以产生人造通道输出数据。 该方法还包括响应于人造渠道输出数据，通过通信通道对码字的第二部分进行编码以传输到多个接收机。 该方法还包括通过通信信道将编码信号发送到多个接收机。