公开(公告)号：US08396688B2

公开(公告)日：2013-03-12

申请号：US12348565

申请日：2009-01-05

申请人： Hemant Kumar Samdani ,  Kunal Raheja ,  Rahul Garg ,  Amitkumar Mahadevan ,  Patrick Duvaut

发明人： Hemant Kumar Samdani ,  Kunal Raheja ,  Rahul Garg ,  Amitkumar Mahadevan ,  Patrick Duvaut

IPC分类号： G06F17/18 ,  H04B15/00 ,  H04Q1/20 ,  G01R29/26

CPC分类号： H04B3/46

摘要： Impulse noise from nearby or intense electrical sources can disrupt communications over digital subscriber lines (DSL). The characterization of the nature, timing and length of impulse noise sources present on a DSL loop is a critical first step in mitigating the effect of impulse noise on DSL communications. DSL standards provide histograms for impulse length and inter-arrival time of impulses. These histograms can be used to derive the nature, maximum frequency and other statistics related to impulse noise on a DSL line.

摘要翻译： 来自附近或强电场的脉冲噪声可能会扰乱通过数字用户线路（DSL）的通信。 存在于DSL环路上的脉冲噪声源的性质，时间和长度的表征是减轻脉冲噪声对DSL通信的影响的关键的第一步。 DSL标准提供脉冲长度和脉冲到达间隔时间的直方图。 这些直方图可用于导出与DSL线路上的脉冲噪声有关的性质，最大频率和其他统计。

公开(公告)号：US08352325B2

公开(公告)日：2013-01-08

申请号：US12194572

申请日：2008-08-20

申请人： Rahul Garg ,  Debasis Mishra

发明人： Rahul Garg ,  Debasis Mishra

IPC分类号： G06Q30/00

CPC分类号： G06Q30/08 ,  G06Q30/02 ,  G06Q30/0601 ,  G06Q30/0617 ,  G06Q40/04 ,  G06Q50/188

摘要： A method, system and computer program product for conducting an online auction of a plurality of heterogeneous items between a plurality of selling and potential purchasing parties. The method includes the steps of accepting an offer in respect of an item, accepting one or more subsequent offers that is/are preferable to a previously accepted offer, and rejecting the previously accepted offer. While the offer/s is/are binding on a party making the offer, acceptance of the offer/s is/are not binding on a party accepting the offer. Classes of “seller strategies”, for offering items to potential purchasing parties, and “buyer strategies”, to decide which offers to accept, are also disclosed. As a result of the interaction of the buyer and seller strategies, the auction mechanism converges to an allocation of items to buyers at particular prices and assists in discovering a free and fair competitive equilibrium price. The auction is performed using terminals connected via a communications network and software-based agents hosted on the terminals, wherein the software-based agents act on behalf of the participating parties.

摘要翻译： 一种用于在多个销售和潜在采购方之间进行多个异构项目的在线拍卖的方法，系统和计算机程序产品。 该方法包括以下步骤：接收关于项目的报价，接受优先于先前接受的报价的一个或多个后续报价，以及拒绝先前接受的报价。 虽然报价对提出要约的一方有约束力，但接受要约的方式对接受要约的一方没有约束力。 还披露了卖方战略类别，向潜在采购方提供物品和买方策略，以决定接受哪些报价。 由于买卖双方策略的相互影响，拍卖机制以特定价格收敛于买家的物品分配，有助于发现自由和公平的竞争均衡价格。 使用通过通信网络连接的终端和在终端上托管的基于软件的代理进行拍卖，其中基于软件的代理人代表参与方行事。

公开(公告)号：US08275067B2

公开(公告)日：2012-09-25

申请号：US12139146

申请日：2008-06-13

申请人： Rahul Garg ,  Patrick Duvaut ,  Harish Jethanandani ,  Amitkumar Mahadevan

发明人： Rahul Garg ,  Patrick Duvaut ,  Harish Jethanandani ,  Amitkumar Mahadevan

IPC分类号： H04L27/04 ,  H04L27/36 ,  H04B1/38

CPC分类号： H04M11/062

摘要： Systems and methods for reducing the peak-to-average ratio (PAR) at the transmitter can reduce the dynamic range required in various analog components. PAR can be reduced by applying a time-domain compensation signal which reduces the magnitude of peaks in the time-domain signal prior to transmission where the time-domain compensation signals use tones that are reserved for the purpose of reducing the PAR. The reservation of these reserved tones for PAR can be implemented by altering the typical startup procedures in a digital subscriber line (xDSL) system. The use of the reserved tones to reduce the PAR can be implemented using a low complexity algorithm or using an adaptive technique.

摘要翻译： 用于降低发射机峰值平均比（PAR）的系统和方法可以减少各种模拟组件所需的动态范围。 可以通过应用时域补偿信号来减小PAR，该时域补偿信号在时域补偿信号使用为了减少PAR的目的而被保留的音调的同时减小时域信号中的峰值的幅度。 可以通过改变数字用户线（xDSL）系统中的典型启动过程来实现用于PAR的这些保留音调的预留。 可以使用低复杂度算法或使用自适应技术来实现使用保留的音调来减少PAR。

公开(公告)号：US08141044B2

公开(公告)日：2012-03-20

申请号：US11939913

申请日：2007-11-14

申请人： Vijay Mann ,  Pradipta De ,  Ravi Kothari ,  Rahul Garg

发明人： Vijay Mann ,  Pradipta De ,  Ravi Kothari ,  Rahul Garg

IPC分类号： G06F9/44

CPC分类号： G06F11/3476 ,  G06F11/3419 ,  G06F2201/805 ,  G06F2201/86 ,  G06F2201/885

摘要： A method for tuning performance of an operating system, the method comprising identifying all sources of operating system jitter; measuring the impact of each of the operating system jitter source; and tuning performance of the operating system, preferably by use of different approaches/techniques, which could include removing the sources of operating system jitter and/or delaying their execution and/or smoothening their execution over a longer period of time. Computer program code and systems are also provided.

摘要翻译： 一种用于调整操作系统性能的方法，所述方法包括识别操作系统抖动的所有来源; 测量每个操作系统抖动源的影响; 并且优选地通过使用不同的方法/技术调整操作系统的性能，其可以包括在更长的时间段内去除操作系统抖动的源和/或延迟其执行和/或平滑其执行。 还提供计算机程序代码和系统。

公开(公告)号：US20110293193A1

公开(公告)日：2011-12-01

申请号：US12790199

申请日：2010-05-28

申请人： Rahul Garg ,  Monu Kedia ,  Yogish Sabharwal

发明人： Rahul Garg ,  Monu Kedia ,  Yogish Sabharwal

IPC分类号： G06K9/54

CPC分类号： G06T11/006 ,  G06T2211/412 ,  G06T2211/424

摘要： A spatio-temporal image of an object is reconstructed based on captured data characterizing the object. The spatio-temporal image comprises a plurality of spatial images in respective time intervals, and at least a given one of the spatial images in one of the time intervals is reconstructed using not only captured data from a frame associated with that time interval but also captured data associated with one or more additional frames associated with other time intervals. The spatio-temporal image may be reconstructed by iteratively obtaining a solution to a minimization or maximization problem in a sparse domain and transforming the solution to an image domain. The transformation between the sparse domain and the image domain may utilize a spatio-temporal transformation implemented using a plurality of basis functions, one or more of which may be determined at least in part based on secondary information associated with the imaged object.

摘要翻译： 基于表征对象的捕获数据来重构对象的时空图像。 空间 - 时间图像包括各个时间间隔中的多个空间图像，并且使用不仅来自与该时间间隔相关联的帧的捕获数据来重构时间间隔之一中的至少一个空间图像中的给定的一个，而且还捕获 与与其他时间间隔相关联的一个或多个附加帧相关联的数据。 可以通过迭代地获得稀疏域中的最小化或最大化问题的解决方案并将解决方案转换为图像域来重构时空图像。 稀疏域和图像域之间的变换可以利用使用多个基本函数实现的时空变换，其中的一个或多个可以至少部分地基于与成像对象相关联的次要信息来确定。

公开(公告)号：US20090252234A1

公开(公告)日：2009-10-08

申请号：US12098696

申请日：2008-04-07

申请人： Hemant Samdani ,  Kunal Raheja ,  Rahul Garg ,  Patrick Duvaut ,  Amitkumar Mahadevan ,  Robert A. Day ,  Robin Levonas

发明人： Hemant Samdani ,  Kunal Raheja ,  Rahul Garg ,  Patrick Duvaut ,  Amitkumar Mahadevan ,  Robert A. Day ,  Robin Levonas

IPC分类号： H04B1/10

CPC分类号： H04L27/2647 ,  H04B3/487

摘要： Systems and methods for monitoring impulse noise are described. At least one embodiment is a method, which comprises detecting whether impulse noise is present and in response to detecting the presence of impulse noise, performing time domain analysis to determine whether one or more impulse noise sources are present based on minimum interarrival time and maximum impulse length. The method further includes performing frequency domain analysis to estimate frequencies associated with the one or more impulse noise sources and based on the time domain analysis and frequency domain analysis, providing a total number of impulse noise sources and frequencies associated with the impulse noise sources. In this regard, the embodiments described herein provide dual-speed monitoring of impulse noise in the form of short-term and long-term monitoring. The use of dual-speed monitoring ensures that dynamic changes in the impulse noise environment are quickly addressed and also ensures better characterization of multiple impulse noise sources in order to provide better impulse noise protection.

摘要翻译： 描述了用于监视脉冲噪声的系统和方法。 至少一个实施例是一种方法，其包括检测是否存在脉冲噪声并且响应于检测到脉冲噪声的存在，执行时域分析以基于最小间隔时间和最大脉冲来确定是否存在一个或多个脉冲噪声源 长度。 该方法还包括执行频域分析以估计与一个或多个脉冲噪声源相关联的频率，并且基于时域分析和频域分析，提供与脉冲噪声源相关联的脉冲噪声源和频率的总数。 在这方面，本文描述的实施例以短期和长期监视的形式提供脉冲噪声的双速度监测。 使用双速度监测可确保脉冲噪声环境中的动态变化得到快速解决，并确保更好地表征多个脉冲噪声源，以提供更好的脉冲噪声保护。

公开(公告)号：US20050254572A1

公开(公告)日：2005-11-17

申请号：US11121475

申请日：2005-05-04

申请人： Rahul Garg ,  Kiran Devanahalli ,  Aparna Krishnashastry

发明人： Rahul Garg ,  Kiran Devanahalli ,  Aparna Krishnashastry

IPC分类号： H03D1/04 ,  H03K5/159 ,  H04L23/02 ,  H04L25/03

CPC分类号： H04L23/02 ,  H04L25/03057 ,  H04L2025/03566

摘要： A decision feedback equalizer (DFE) has an inter symbol interference (ISI) loop and inter chip interference (ICI) loop. A buffer at the input of the DFE loop receives a (CCK based data rate) signal coming into the DFE, retains a predetermined number of chips from each incoming symbol and assists to meet timing requirements by chip management. An outgoing rate for the chips from the buffer may depend on the incoming rate and may be higher than the incoming rate by a known factor. A method of designing a configuration for the DFE takes into consideration the timing delay in the loops. The operation within the DFE loop is pipelined, and any latency due to the pipelining is handled at a CCK demodulator. A method for designing the DFE architecture and an article comprising a storage medium with instructions thereon for executing the method, are also disclosed.

摘要翻译： 判决反馈均衡器（DFE）具有符号间干扰（ISI）环路和芯片间干扰（ICI）环路。 DFE循环输入端的一个缓冲器接收到进入DFE的基于（基于CCK的数据速率）信号，从每个输入符号保留预定数量的芯片，并通过芯片管理帮助满足定时要求。 来自缓冲器的芯片的输出速率可以取决于输入速率，并且可以通过已知因素高于输入速率。 设计DFE的配置的方法考虑了循环中的定时延迟。 DFE循环中的操作是流水线的，并且由于流水线的任何延迟在CCK解调器处理。 还公开了一种用于设计DFE架构的方法和包括其上具有用于执行该方法的指令的存储介质的物品。

公开(公告)号：US20050195770A1

公开(公告)日：2005-09-08

申请号：US11067968

申请日：2005-02-28

申请人： Roshan Baliga ,  Rahul Garg ,  Rajendra Kumar

发明人： Roshan Baliga ,  Rahul Garg ,  Rajendra Kumar

IPC分类号： H04B1/69 ,  H04B7/216

CPC分类号： H04L7/10 ,  H04B1/7073

摘要： A system for receiving and handling a scrambled input data signal that includes a preamble with a start of frame delimiter (SFD) initiates an SFD search on the scrambled input data, thereby attempting to save an initialization period. The initialization period may be of the order of 7 μS, and its saving results in improved timeline management enabling antenna diversity and the possible use of high performance algorithms. The system may use two parallel paths for signal processing, each having an SFD detector and a descrambler. If the detected SFD is short, then the second path is disabled, and if it is long, then the first parallel path is disabled. Alternatively, the first path can be used for a finite period of time (for e.g., 40 symbols) and if the SFD is still not detected, the first path is disabled, and the system uses only the second path.

摘要翻译： 用于接收和处理包括具有帧定界符（SFD）开始的前同步码的加扰输入数据信号的系统启动对加扰输入数据的SFD搜索，从而尝试保存初始化周期。 初始化时间可以是7μs的量级，并且其节省结果是改善了时间线管理，从而实现了天线分集和可能使用高性能算法。 系统可以使用两个并行路径进行信号处理，每个路径都有一个SFD检测器和一个解扰器。 如果检测到的SFD短，则禁用第二条路径，如果长度不等，则第一条并行路径被禁用。 或者，第一路径可以用于有限的时间段（例如，40个符号），并且如果尚未检测到SFD，则禁用第一路径，并且系统仅使用第二路径。