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    MULTIPATH FILTERING FOR WIRELESS RF SIGNALS
    1.
    发明申请
    MULTIPATH FILTERING FOR WIRELESS RF SIGNALS 有权

    公开(公告)号：US20220302992A1

    公开(公告)日：2022-09-22

    申请号：US17203255

    申请日：2021-03-16

    申请人： Pivotal Commware, Inc.

    发明人： Srinivas Sivaprakasam ,  Timothy Hudson Mason

    IPC分类号： H04B7/08 ,  H04B7/06 ,  H04W72/04 ,  H04B1/7117

    摘要： Filtering for sampled data representing uplink wireless RF signals monitored by a pair of antennas is provided to improve accuracy in determining an angular location of an identified UE. An extracted portion of the filtered sampled data is used to improve accuracy in determining an angular location of the identified UE. The extracted portion represents direct path uplink wireless RF signals that have traveled by a line of sight between the pair of antennas and the identified UE. Another portion of the filtered sampled data is cancelled, which represents multiple path (multipath) uplink wireless RF signals that have traveled a longer distance than the direct path signals due to reflection from one or more surfaces on multiple paths between the identified UE and the pair of antennas.

    Method for placement of fingers with G-Rake advanced receiver
    5.
    发明授权
    Method for placement of fingers with G-Rake advanced receiver 有权
    使用G-Rake高级接收器放置手指的方法

    公开(公告)号：US09225386B2

    公开(公告)日：2015-12-29

    申请号：US11955084

    申请日：2007-12-12

    申请人： Ram Asokan

    发明人： Ram Asokan

    IPC分类号： H04B17/02 ,  H04B1/06 ,  H04B7/00 ,  H04B1/712 ,  H04B1/7117

    CPC分类号： H04B1/712 ,  H04B1/7117 ,  H04B2201/709727

    摘要： An electronic device includes a Rake receiver for receiving wireless signals, wherein the Rake receiver includes a predetermined number of fingers and a combiner. The Rake receiver also includes a channel detection circuit configured to identify at least one channel tap in a received signal, and a placement circuit configured to place a finger of the predetermined number of fingers at a location corresponding to the at least one identified channel tap. If all of the predetermined number of fingers are not associated with a corresponding channel tap, unplaced fingers of the predetermined number of fingers are placed at locations based on a signal-to-interference ratio estimate at an output of the combiner.

    摘要翻译： 电子设备包括用于接收无线信号的Rake接收机，其中Rake接收机包括预定数量的指状物和组合器。 Rake接收机还包括被配置为识别接收信号中的至少一个信道抽头的信道检测电路，以及配置为将预定数量的指状物的手指放置在与至少一个识别的信道抽头相对应的位置处的放置电路。 如果所有预定数量的手指不与对应的通道抽头相关联，则基于在组合器的输出处的信号干扰比估计，预定数量的手指的未放置的手指放置在位置。

    Method and system for processing a signal
    6.
    发明授权
    Method and system for processing a signal 有权
    处理信号的方法和系统

    公开(公告)号：US09083446B2

    公开(公告)日：2015-07-14

    申请号：US12889035

    申请日：2010-09-23

    申请人： Steve Allpress ,  Steve Felix ,  Abdelkader Medles

    发明人： Steve Allpress ,  Steve Felix ,  Abdelkader Medles

    IPC分类号： H04B1/00 ,  H04B1/7117 ,  H04L7/00

    CPC分类号： H04B1/7117 ,  H04L7/0029 ,  H04L7/007

    摘要： Method and receiver for processing a signal in a wireless communication system in which the signal comprises a sequence of chips. The signal is receive data at least one rake finger and sampled. There is a time spacing t1 between successive samples less than the time spacing tc between successive chips in the signal. Channel conditions on the channel are estimated and based on estimated channel conditions by the following steps: monitoring timing of the signal on one of the at least one rake finger to determine a time difference between the timing of the signal on the one of the at least one rake finger and the timing of the generation of the samples, the determined time difference being a multiple of t2, where t2

    摘要翻译： 用于在无线通信系统中处理信号的方法和接收器，其中该信号包括一系列芯片。 信号是接收数据至少一个耙指并采样。 在连续样本之间存在小于信号中连续码片之间的时间间隔tc的时间间隔t1。 通过以下步骤来估计信道上的信道状况并基于所估计的信道条件：监视至少一个耙指之一上的信号的定时，以确定至少一个信号之间的信号的定时之间的时间差 一个耙指和产生样本的定时，确定的时间差是t2的倍数，其中t2

    Radio Receiver for Detecting an Additive White Gaussian Noise Channel
    7.
    发明申请
    Radio Receiver for Detecting an Additive White Gaussian Noise Channel 有权
    用于检测加性白高斯噪声通道的无线电接收器

    公开(公告)号：US20140355654A1

    公开(公告)日：2014-12-04

    申请号：US14291049

    申请日：2014-05-30

    申请人： ST-Ericsson SA

    发明人： Kazuyoshi Uesaka ,  Elias Jonsson ,  Hisashi Onozawa

    IPC分类号： H04B1/7117

    CPC分类号： H04B1/7117 ,  H04B1/7113

    摘要： The method disclosed herein is implemented in a radio receiver to detect an AWGN channel, where the radio receiver comprises a rake receiver. The radio receiver receives signals transmitted via a propagation channel from a transmitter, and determines that the propagation channel is an AWGN channel when a filtered version of a minimum value of a metric is lower than a threshold value. The metric relates to a difference between a normalized measured power profile of the propagation channel and a normalized power template, which normalized power template is dependent on predetermined sampling timing shifts and on rake finger positions within the rake receiver.

    摘要翻译： 本文公开的方法在无线电接收机中实现以检测AWGN信道，其中无线电接收机包括耙式接收机。 无线电接收机接收从发射机经由传播信道传输的信号，并且当度量的最小值的滤波版本低于阈值时，确定传播信道是AWGN信道。 该度量涉及传播信道的归一化测量功率分布与归一化功率模板之间的差异，该归一化功率模板取决于预定采样定时偏移和耙机接收机内的耙指位置。

    Method and system for single antenna receiver system for WCDMA
    8.
    发明授权
    Method and system for single antenna receiver system for WCDMA 有权
    WCDMA单天线接收机系统方法与系统

    公开(公告)号：US08897338B2

    公开(公告)日：2014-11-25

    申请号：US13593111

    申请日：2012-08-23

    申请人： Mark Kent ,  Vinko Erceg ,  Uri M. Landau ,  Pieter Van Rooyen

    发明人： Mark Kent ,  Vinko Erceg ,  Uri M. Landau ,  Pieter Van Rooyen

    IPC分类号： H04B1/00 ,  H04B1/7115 ,  H04L25/02 ,  H04B1/7117

    CPC分类号： H04L25/0212 ,  H04B1/7115 ,  H04B1/7117 ,  H04L25/0204

    摘要： A receiver receives multipath signals in a W-CDMA system. Channel estimates and timing reference signals are generated utilizing the received multipath signals. Timing correction signals indicating a location of the received multipath signals may be generated and the received multipath signals may be combined based on the computed channel estimates and/or the generated timing reference signals. The multipath signals may be combined as a signal cluster. Circuitry may be provided that computes channel estimates based on at least one of a plurality of received multipath signals, and generates timing reference signals indicating a location of at least one of the plurality of received multipath signals. Circuitry may also be provided that combines at least a portion of the plurality of received multipath signals based on at least a portion of the computed channel estimates and/or the generated timing reference signals.

    摘要翻译： 接收机在W-CDMA系统中接收多径信号。 利用所接收的多径信号产生信道估计和定时参考信号。 可以产生指示所接收的多路径信号的位置的定时校正信号，并且可以基于所计算的信道估计和/或所生成的定时参考信号来组合所接收的多路径信号。 多径信号可以被组合为信号簇。 可以提供电路，其基于多个接收的多路径信号中的至少一个来计算信道估计，并且产生指示多个接收的多路径信号中的至少一个的位置的定时参考信号。 还可以提供电路，其基于所计算的信道估计的至少一部分和/或所生成的定时参考信号来组合多个接收的多径信号的至少一部分。

    Device and method for selecting a path from an estimated delay profile of a radio signal
    9.
    发明授权
    Device and method for selecting a path from an estimated delay profile of a radio signal 有权
    从无线电信号的估计延迟分布中选择路径的装置和方法

    公开(公告)号：US08842781B2

    公开(公告)日：2014-09-23

    申请号：US12705670

    申请日：2010-02-15

    申请人： Thorsten Clevorn ,  Alper Ceylan

    发明人： Thorsten Clevorn ,  Alper Ceylan

    IPC分类号： H04B1/00 ,  H04L27/06 ,  H04B1/7117 ,  H04B17/00 ,  H04B1/7113 ,  H04B7/08

    CPC分类号： H04B17/0047 ,  H04B1/7113 ,  H04B1/7117 ,  H04B7/0857 ,  H04B17/327 ,  H04B17/364

    摘要： A device includes a delay profile estimator to estimate a delay profile of multiple paths of a radio signal, wherein the delay profile indicates signal powers of the multiple paths as a function of time delay. The device further includes a path selector to select a path from the delay profile if the path has a signal power higher than a threshold. The threshold has a first threshold value in a first section of the delay profile which is higher than a second threshold value in a second section of the delay profile.

    摘要翻译： 一种装置包括用于估计无线电信号的多个路径的延迟分布的延迟分布估计器，其中所述延迟分布指示作为时间延迟的函数的所述多个路径的信号功率。 所述设备还包括路径选择器，用于如果所述路径具有高于阈值的信号功率，则从所述延迟分布中选择路径。 阈值在延迟分布的第一部分中具有高于延迟分布的第二部分中的第二阈值的第一阈值。

    Reception apparatus, path detection apparatus, method thereof, and computer product used in CDMA system base station
    10.
    发明授权
    Reception apparatus, path detection apparatus, method thereof, and computer product used in CDMA system base station 有权
    接收装置，路径检测装置，方法以及在CDMA系统基站中使用的计算机产品

    公开(公告)号：US08811368B2

    公开(公告)日：2014-08-19

    申请号：US12035765

    申请日：2008-02-22

    申请人： Takato Ezaki

    发明人： Takato Ezaki

    IPC分类号： H04B7/216 ,  H04B1/7073 ,  H04B1/7115 ,  H04B1/7117

    CPC分类号： H04B1/7073 ,  H04B1/7115 ,  H04B1/7117 ,  H04B2201/70707

    摘要： A reception apparatus used by a Code Division Multiple Access (CDMA) system base station includes a path detection unit performing path detection on a selected user equipment. Also included is a deriving unit using the detected path timing to despread incoming signals from said selected user equipment and deriving one or more multipath components. Also included is a providing unit Rake combining said one or more multipath components to provide a demodulation signal. Also included is a scheduling unit selecting one or more user equipments at predetermined intervals according to one or more judgment criteria and reporting to the path detection unit. The one or more judgment criteria includes criteria for selecting the user equipment with the demodulation signal which has a higher fading frequency.

    摘要翻译： 由码分多址（CDMA）系统基站使用的接收装置包括对所选用户设备执行路径检测的路径检测单元。 还包括导出单元，其使用检测到的路径定时来从所选择的用户设备解扩输入信号并导出一个或多个多路径分量。 还包括提供单元Rake组合所述一个或多个多径分量以提供解调信号。 还包括一个调度单元根据一个或多个判断标准以预定间隔选择一个或多个用户设备，并向路径检测单元报告。 一个或多个判断标准包括用具有较高衰落频率的解调信号选择用户设备的标准。