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    Interference cancellation in variable codelength systems for multi-access communication
    3.
    发明申请
    Interference cancellation in variable codelength systems for multi-access communication 有权
    用于多访问通信的可变码长系统中的干扰消除

    公开(公告)号：US20120027138A1

    公开(公告)日：2012-02-02

    申请号：US13253075

    申请日：2011-10-05

    申请人： Vijay Nagarajan ,  Louis L. Scharf ,  Anand P. Narayan

    发明人： Vijay Nagarajan ,  Louis L. Scharf ,  Anand P. Narayan

    IPC分类号： H04L25/08

    CPC分类号： H04B1/7107 ,  H04B1/712 ,  H04B2201/70703 ,  H04B2201/709727

    摘要： A receiver employs low-rate processing to synthesize the effect of high-rate interference in a received multi-rate signal. Each high-rate subchannel is analyzed on its low-rate descendents to produce symbol estimates for each low-rate symbol interval. The symbol estimates are applied to low-rate descendent subchannels, which are then combined to synthesize the effects of the high-rate interference. An interference canceller processes the synthesized interference with the received signal for producing an interference-cancelled signal. Alternatively, analogous steps may be applied at high-rate to analyze, synthesize, and cancel the effects of low-rate interference in a multi-rate signal.

    摘要翻译： 接收机采用低速率处理来合成接收的多速率信号中的高速率干扰的影响。 在其低速率后代分析每个高速率子信道，以对每个低速率符号间隔产生符号估计。 符号估计适用于低速率后代子信道，然后将其合并，以合成高速率干扰的影响。 干扰消除器处理与接收信号的合成干扰以产生干扰消除信号。 或者，可以以高速率应用类似的步骤来分析，合成和消除多速率信号中的低速率干扰的影响。

    Interference cancellation in variable codelength systems for multi-acess communication
    7.
    发明授权
    Interference cancellation in variable codelength systems for multi-acess communication 有权
    用于多访问通信的可变码长系统中的干扰消除

    公开(公告)号：US08064498B2

    公开(公告)日：2011-11-22

    申请号：US12727880

    申请日：2010-03-19

    申请人： Vijay Nagarajan ,  Louis L. Scharf ,  Armand P. Narayan

    发明人： Vijay Nagarajan ,  Louis L. Scharf ,  Armand P. Narayan

    IPC分类号： H04B1/00

    CPC分类号： H04B1/7107 ,  H04B1/712 ,  H04B2201/70703 ,  H04B2201/709727

    摘要： A receiver employs low-rate processing to synthesize the effect of high-rate interference in a received multi-rate signal. Each high-rate subchannel is analyzed on its low-rate descendents to produce symbol estimates for each low-rate symbol interval. The symbol estimates are applied to low-rate descendent subchannels, which are then combined to synthesize the effects of the high-rate interference. An interference canceller processes the synthesized interference with the received signal for producing an interference-cancelled signal. Alternatively, analogous steps may be applied at high-rate to analyze, synthesize, and cancel the effects of low-rate interference in a multi-rate signal.

    摘要翻译： 接收机采用低速率处理来合成接收的多速率信号中的高速率干扰的影响。 在其低速率后代分析每个高速率子信道，以对每个低速率符号间隔产生符号估计。 符号估计适用于低速率后代子信道，然后将其合并，以合成高速率干扰的影响。 干扰消除器处理与接收信号的合成干扰以产生干扰消除信号。 或者，可以以高速率应用类似的步骤来分析，合成和消除多速率信号中的低速率干扰的影响。

    Interference cancellation in variable codelength systems for multi-access communication
    8.
    发明授权
    Interference cancellation in variable codelength systems for multi-access communication 有权
    用于多访问通信的可变码长系统中的干扰消除

    公开(公告)号：US07697595B2

    公开(公告)日：2010-04-13

    申请号：US11432580

    申请日：2006-05-11

    申请人： Vijay Nagarajan ,  Louis L Scharf ,  Anand P Narayan

    发明人： Vijay Nagarajan ,  Louis L Scharf ,  Anand P Narayan

    IPC分类号： H04B1/69

    CPC分类号： H04B1/7107 ,  H04B1/712 ,  H04B2201/70703 ,  H04B2201/709727

    摘要： A receiver employs low-rate processing to synthesize the effect of high-rate interference in a received multi-rate signal. Each high-rate subchannel is analyzed on its low-rate descendents to produce symbol estimates for each low-rate symbol interval. The symbol estimates are applied to low-rate descendent subchannels, which are then combined to synthesize the effects of the high-rate interference. An interference canceller processes the synthesized interference with the received signal for producing an interference-cancelled signal. Alternatively, analogous steps may be applied at high-rate to analyze, synthesize, and cancel the effects of low-rate interference in a multi-rate signal.

    摘要翻译： 接收机采用低速率处理来合成接收的多速率信号中的高速率干扰的影响。 在其低速率后代分析每个高速率子信道，以对每个低速率符号间隔产生符号估计。 符号估计适用于低速率后代子信道，然后将其合并，以合成高速率干扰的影响。 干扰消除器处理与接收信号的合成干扰以产生干扰消除信号。 或者，可以以高速率应用类似的步骤来分析，合成和消除多速率信号中的低速率干扰的影响。

    Interference cancellation within wireless transceivers
    9.
    发明授权
    Interference cancellation within wireless transceivers 有权
    无线收发器内的干扰消除

    公开(公告)号：US07463609B2

    公开(公告)日：2008-12-09

    申请号：US11192763

    申请日：2005-07-29

    申请人： Louis L. Scharf ,  Vijay Nagarajan

    发明人： Louis L. Scharf ,  Vijay Nagarajan

    IPC分类号： H04B7/216

    CPC分类号： H04B1/7107

    摘要： The receiver includes a Rake receiver for separating a received signal into multipath components, an interference selector for selecting interference symbols corresponding to interfering paths and subchannels, a synthesizer for synthesizing an interference signal from selected paths and estimated subchannel symbols, and a canceller for constructing a projection operator or a scale-invariant subtraction operator to cancel selected interference in multipath components of the received signal, or from the received signal itself. The interference canceller may use a sequence of symbol estimates to simultaneously cancel inter-channel interference and inter-symbol interference. Interference cancellers may be placed at one or more locations within the receiver chain.

    摘要翻译： 接收机包括用于将接收到的信号分离为多路径分量的Rake接收机，用于选择对应于干扰路径和子信道的干扰符号的干扰选择器，用于合成来自所选路径的干扰信号的合成器和估计的子信道符号，以及用于构建 投影运算符或缩放不变减法运算符，以消除接收信号的多路径分量中的选定干扰，或从接收信号本身。 干扰消除器可以使用符号估计序列来同时消除信道间干扰和符号间干扰。 干扰消除器可以放置在接收器链中的一个或多个位置处。

    Optimal feedback weighting for soft-decision cancellers
    10.
    发明授权
    Optimal feedback weighting for soft-decision cancellers 有权
    软决策消除器的最优反馈权重

    公开(公告)号：US08761321B2

    公开(公告)日：2014-06-24

    申请号：US11233636

    申请日：2005-09-23

    申请人： John K. Thomas ,  Michael L McCloud ,  Vijay Nagarajan

    发明人： John K. Thomas ,  Michael L McCloud ,  Vijay Nagarajan

    IPC分类号： H03D1/04

    CPC分类号： H04B1/7107

    摘要： A receiver produces optimal weights for cancelling multipath interference. An SINR measurement module generates SINR measurements corresponding to soft symbol estimates produced by a baseband receiver from a received multipath signal. Each soft symbol estimate is replaced with either a hard estimate or a weighted soft estimate based on how each corresponding SINR measurement compares to a predetermined threshold. The received multipath signal and estimated interference signals generated from the hard symbol estimates and/or the weighted soft symbol estimates are combined to produce interference cancelled signals that may be combined via maximum ratio combining to produce an interference-cancelled MRC signal.

    摘要翻译： 接收机产生用于消除多路径干扰的最优权重。 SINR测量模块从接收的多路径信号产生对应于由基带接收机产生的软符号估计的SINR测量。 基于每个对应的SINR测量与预定阈值相比较，每个软符号估计被硬估计或加权软估计替代。 将从硬符号估计和/或加权软符号估计产生的所接收的多路径信号和估计干扰信号组合以产生干扰消除的信号，该干扰消除信号可以经由最大比合并来组合以产生干扰消除的MRC信号。