公开(公告)号：US20120263481A1

公开(公告)日：2012-10-18

申请号：US13269992

申请日：2011-10-10

Applicant: Ezra Ip ,  Neng Bai

Inventor： Ezra Ip ,  Neng Bai

IPC: H04B10/04 ,  H04B10/06

CPC classification number: H04B10/2543 ,  H04B10/6971 ,  H04B2210/252 ,  H04B2210/254 ,  H04L25/03159 ,  H04L25/03343 ,  H04L27/2697 ,  H04L27/367 ,  H04L2025/03687

Abstract: Systems and methods are disclosed to perform nonlinear compensation (NLC) in an optical communication system by applying digital backpropagation (DBP) using a frequency-shaped split-step Fourier method (FS-SSFM), and processing a data block using an overlap-and-save method with a block size M and an overlap factor of N samples between adjacent blocks.

Abstract translation: 公开了一种系统和方法，通过使用频率分段傅立叶方法（FS-SSFM）应用数字反向传播（DBP）并且使用重叠和/或处理数据块来在光通信系统中执行非线性补偿（NLC） -Save方法具有块大小M和相邻块之间的N个样本的重叠因子。

公开(公告)号：US20120263474A1

公开(公告)日：2012-10-18

申请号：US13446596

申请日：2012-04-13

Applicant: Ming-Fang Huang

Inventor： Ming-Fang Huang

IPC: H04J14/02

CPC classification number: H04J14/0282 ,  H04B10/25754 ,  H04J14/02 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/0298

Abstract: A method for an arbitrary optical microwave and mm-wave generation includes generating 2N+1 optical carriers while employing only one continuous wave CW lightwave with a recirculating multi-tone generator; and selecting optical carriers with an arbitrary-frequency optical millimeter-wave generator responsive to the prior generating.

Abstract translation: 一种用于任意光学微波和毫米波产生的方法包括：产生2N + 1个光载波，同时仅使用一个连续波CW光波与再循环多音发生器; 以及响应于先前的生成，选择具有任意频率光学毫米波发生器的光载波。

公开(公告)号：US20120251117A1

公开(公告)日：2012-10-04

申请号：US13435413

申请日：2012-03-30

Applicant: Ankitkumar N. Patel ,  Philip Nan Ji ,  Jason P. Jue ,  Ting Wang ,  Yoshiaki Aono

Inventor： Ankitkumar N. Patel ,  Philip Nan Ji ,  Jason P. Jue ,  Ting Wang ,  Yoshiaki Aono

IPC: H04J14/02

CPC classification number: H04J14/0224 ,  H04J14/0257 ,  H04J14/026 ,  H04J14/0267

Abstract: A method includes determining a line rate selection for a flexible optical wavelength-division-multiplexing WDM network, determining a traffic routing in said network, and determining simultaneously a channel routing, wavelength assignment and spectrum allocation in said network based on an auxiliary graph.

Abstract translation: 一种方法包括确定柔性光波分复用WDM网络的线路速率选择，确定所述网络中的业务路由，以及基于辅助图形同时确定所述网络中的信道路由，波长分配和频谱分配。

公开(公告)号：US20120251110A1

公开(公告)日：2012-10-04

申请号：US13077748

申请日：2011-03-31

Applicant: Neda CVIJETIC ,  Narayan PRASAD ,  Dayou QIAN ,  Ting WANG

Inventor： Neda CVIJETIC ,  Narayan PRASAD ,  Dayou QIAN ,  Ting WANG

IPC: H04J14/06 ,  H04L27/01

CPC classification number: H04L25/0208 ,  H04J14/06 ,  H04L25/022 ,  H04L25/024 ,  H04L27/2647

Abstract: A method for joint transmitter and receiver processing for computationally efficient equalization in polarization multiplexed (POLMUX) optical orthogonal frequency division multiplexed (OFDM) transmission with direct detection.

Abstract translation: 一种用于在具有直接检测的偏振复用（POLMUX）光学正交频分复用（OFDM）传输中的计算上有效均衡的联合发射机和接收机处理方法。

公开(公告)号：US20120250779A1

公开(公告)日：2012-10-04

申请号：US13524258

申请日：2012-06-15

Applicant: Mohammad A. Khojastepour

Inventor： Mohammad A. Khojastepour

IPC: H04B7/02 ,  H04L27/00

CPC classification number: H04B7/0632 ,  H04B7/043 ,  H04B7/0456 ,  H04B7/0478 ,  H04B7/0617 ,  H04B7/0639

Abstract: Methods and apparatus are disclosed for applying successive multi-rank beamforming strategies (e.g., successive precoding strategies) for the design of precoders over a set of parallel channels. Successive beamforming is applied to a narrow band channel model and is also applied for finer quantization of a single beamforming vector (e.g., recursive beamforming). A first embodiment provides the optimal approach with high complexity. An alternative embodiment provides successive beamforming for near optimal precoding selection with medium complexity. A low complexity method for precoder selection is also provided wherein a channel representative matrix for the set of parallel channels is determined and successive beamforming on the calculated channel representative is applied.

Abstract translation: 公开了用于在一组并行通道上设计预编码器的连续多级波束形成策略（例如，连续预编码策略）的方法和装置。 连续波束成形被应用于窄带信道模型，并且还被应用于单个波束成形向量（例如，递归波束成形）的更精细量化。 第一实施例提供了高复杂度的最佳方法。 替代实施例提供连续的波束成形用于具有中等复杂度的近最优预编码选择。 还提供了一种用于预编码器选择的低复杂度方法，其中确定用于该组并行信道的信道代表性矩阵，并且应用所计算的信道代表上的连续波束成形。

公开(公告)号：US20120246626A1

公开(公告)日：2012-09-27

申请号：US13428608

申请日：2012-03-23

Applicant: Khalil GHORBAL ,  Franjo IVANCIC ,  Gogul BALAKRISHNAN ,  Naoto MAEDA

Inventor： Khalil GHORBAL ,  Franjo IVANCIC ,  Gogul BALAKRISHNAN ,  Naoto MAEDA

IPC: G06F9/44

CPC classification number: G06F11/3608

Abstract: A computer implemented program analysis method employing a set of new abstract domains applicable to non-convex invarients. The method analyzes programs statically using abstract interpretation while advantageously considering non-convex structures and in particular those situations in which an internal region of an unreachable state exists within a larger region of reachable states. The method employs a new set of non-convex domains (donut domains) based upon the notion of an outer convex region of reachable states (Domain D1) and an inner region of unreachable states (Domain D2) which advantageously permits capture of non-convex properties by using convex regions and operations.

Abstract translation: 一种计算机实现的程序分析方法，采用一组适用于非凸不可侵犯的新抽象域。 该方法使用抽象解释静态地分析程序，同时有利地考虑非凸结构，特别是在可达状态的较大区域内存在不可达状态的内部区域的情况。 该方法基于可达状态（域D1）的外部凸起区域和不可达状态的内部区域（域D2）的概念，采用新的非凸区域（环形区域），其有利地允许捕获非凸起 通过使用凸区域和操作的属性。

公开(公告)号：US20120243788A1

公开(公告)日：2012-09-27

申请号：US13315487

申请日：2011-12-09

Applicant: CHRISTOPHER MALON ,  ERIC COSATTO

Inventor： CHRISTOPHER MALON ,  ERIC COSATTO

IPC: G06K9/46

CPC classification number: G06T7/0012 ,  G06K9/00127 ,  G06T7/12 ,  G06T2207/30024

Abstract: Systems and methods for extracting a radial contour around a given point in an image includes providing an image including a point about which a radial contour is to be extracted around. A plurality of directions around the point and a plurality of radius lengths for each direction are provided. Local costs are determined for all radius lengths for each direction by comparing texture variances at each radius length with the texture variance at a further radius length. A radius length is determined, using a processor, for each direction based on the accumulated value of the local costs to provide a radial contour.

Abstract translation: 用于提取图像中的给定点周围的径向轮廓的系统和方法包括提供包括要围绕其提取径向轮廓的点的图像。 提供了围绕该点的多个方向和每个方向的多个半径长度。 通过将每个半径长度处的纹理方差与另一半径长度上的纹理方差进行比较，确定每个方向的所有半径长度的局部花费。 使用处理器，根据本地成本的累积值来确定每个方向的半径长度以提供径向轮廓。

公开(公告)号：US20120239372A1

公开(公告)日：2012-09-20

申请号：US13324014

申请日：2011-12-13

Applicant: Erik KRUUS

Inventor： Erik KRUUS

IPC: G06G7/62

CPC classification number: G06F17/5022 ,  G06F2217/10

Abstract: A method is provided for sequential discrete event simulation for a distributed system having a set of nodes. A priority queue is constructed that includes events to be executed by a processor at a given node in the set. A first subset of nodes is identified. Each node in the first subset is associated with a respective subset of events and includes a highest priority event whose priority must be unconditionally re-evaluated during a next time step. A second subset of nodes is identified. Each node in the second subset is associated with a respective other subset of events and includes a highest priority event whose priority must be re-evaluated when a re-evaluation condition depending upon an external state is satisfied. A next one of the plurality of events in the priority queue is selected to be executed by the processor using the first and second subsets of nodes.

Abstract translation: 提供了一种用于具有一组节点的分布式系统的顺序离散事件模拟的方法。 构建优先级队列，其包括要由集合中的给定节点处理器执行的事件。 识别节点的第一个子集。 第一子集中的每个节点与事件的相应子集相关联，并且包括最高优先级事件，其优先级必须在下一时间步长期间被无条件地重新评估。 识别节点的第二个子集。 第二子集中的每个节点与相应的其他事件子集相关联，并且包括当满足取决于外部状态的重新评估条件时必须重新评估其优先级的最高优先级事件。 选择优先级队列中的多个事件中的下一个事件由处理器使用第一和第二子节点执行。

公开(公告)号：US20120233486A1

公开(公告)日：2012-09-13

申请号：US13409872

申请日：2012-03-01

Applicant: Rajat Phull ,  Srihari Cadambi ,  Nishkam Ravi ,  Srimat Chakradhar

Inventor： Rajat Phull ,  Srihari Cadambi ,  Nishkam Ravi ,  Srimat Chakradhar

IPC: G06F1/12 ,  G06F9/46

CPC classification number: G06F9/5083 ,  G06F9/5088 ,  G06F9/522

Abstract: Methods and systems for managing data loads on a cluster of processors that implement an iterative procedure through parallel processing of data for the procedure are disclosed. One method includes monitoring, for at least one iteration of the procedure, completion times of a plurality of different processing phases that are undergone by each of the processors in a given iteration. The method further includes determining whether a load imbalance factor threshold is exceeded in the given iteration based on the completion times for the given iteration. In addition, the data is repartitioned by reassigning the data to the processors based on predicted dependencies between assigned data units of the data and completion times of a plurality of the processers for at least two of the phases. Further, the parallel processing is implemented on the cluster of processors in accordance with the reassignment.

Abstract translation: 公开了用于通过对该过程的数据的并行处理实现迭代过程的用于管理处理器集群上的数据负载的方法和系统。 一种方法包括对于给定迭代中的每个处理器经历的多个不同处理阶段的完成时间进行至少一次迭代过程的监视。 该方法还包括基于给定迭代的完成时间来确定在给定迭代中是否超过负载不平衡因子阈值。 另外，通过基于对于至少两个相位的数据的分配的数据单元和多个处理器的完成时间之间的预测依赖性重新分配数据到处理器来重新分配数据。 此外，根据重新分配，在处理器集群上实现并行处理。

公开(公告)号：US20120230267A1

公开(公告)日：2012-09-13

申请号：US13408487

申请日：2012-02-29

Applicant: Karthikeyan Sundaresan ,  Mustafa Arslan ,  Jongwon Yoon

Inventor： Karthikeyan Sundaresan ,  Mustafa Arslan ,  Jongwon Yoon

IPC: H04W72/04 ,  H04W24/00 ,  H04B15/00

CPC classification number: H04W72/06 ,  H04W24/10 ,  H04W28/04 ,  H04W28/06 ,  H04W72/00 ,  H04W74/085 ,  H04W84/045

Abstract: Methods and systems for managing resources in femtocells are disclosed. One method includes transmitting at least one frame including a first zone of resources on which a set of base stations including at least one femtocell base station and base stations that are adjacent to the femtocell base station implement transmission of signals to impose interference. The one or more frames further includes a second zone dedicated for measuring throughput of mobile stations served by the femtocell base station without interference. The mobile stations are categorized by determining throughputs of the mobile stations with interference based on the transmission of signals on the first zone. Resources of at least one additional frame are configured based on the categorization. Further, the additional frame(s) are transmitted in a cell of the femtocell base station in accordance with the configuration.

Abstract translation: 公开了用于管理毫微微小区资源的方法和系统。 一种方法包括发送包括第一资源区域的至少一个帧，其中包括至少一个毫微微小区基站的一组基站和与毫微微小区基站相邻的基站实现信号的发送以施加干扰。 该一个或多个帧还包括专用于测量由毫微微小区基站服务的移动站的吞吐量而不受干扰的第二区域。 通过基于第一区域上的信号的传输来确定具有干扰的移动站的吞吐量来对移动站进行分类。 基于分类配置至少一个附加帧的资源。 此外，根据该配置，在毫微微小区基站的小区中发送附加帧。