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1.发明申请Method and Apparatus for Selecting Signal Processing Delays Based on Historical Selection Data 有权基于历史选择数据选择信号处理延迟的方法和装置公开(公告)号：US20080130797A1
公开(公告)日：2008-06-05
申请号：US11566256
申请日：2006-12-04
IPC分类号： H04L27/06
CPC分类号： H04B1/7113 , H04B1/7117 , H04B1/712 , H04B2201/709727
摘要： Signal processing delays are selected from a candidate set in a wireless receiver based on both present and past channel behavior. According to one embodiment, a subset of signal processing delays are selected for received signal processing by accumulating a history of periodic delay selection computations for a candidate set of signal processing delays during a time interval. The delay selection calculations are based on cross-correlations between different ones of the signal processing delays. At the end of the time interval, a subset of the signal processing delays are selected from the candidate set of delays for received signal processing based on the history of delay selection computations.
摘要翻译： 基于现在和过去的信道行为，从无线接收机中的候选集中选择信号处理延迟。 根据一个实施例，通过在时间间隔期间累积用于信号处理延迟的候选组的周期性延迟选择计算的历史来选择信号处理延迟的子集用于接收信号处理。 延迟选择计算基于不同信号处理延迟之间的互相关。 在时间间隔结束时，基于延迟选择计算的历史，从用于接收信号处理的候选延迟集中选择信号处理延迟的子集。
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2.发明授权Method and apparatus for canceling interference from high power, high data rate signals 有权消除高功率，高数据速率信号干扰的方法和装置公开(公告)号：US07389099B2
公开(公告)日：2008-06-17
申请号：US11112578
申请日：2005-04-22
IPC分类号： H04B1/18
CPC分类号： H04B1/7107 , H04B2201/709727
摘要： A method and apparatus in a radio receiver for canceling interference from a high power, high data rate signal received in a combined signal that includes a contribution from the high power signal and a contribution from a lower power signal. It is first determined whether the high power signal was correctly received. A CRC checksum may be used to determine whether the high power signal was received with a good reliability. Thereafter, the contribution of the high power signal is removed from the received signal only if the high power signal was correctly received. The contribution of the high power signal may be removed by hard-subtracting the contribution of the high power signal from the received signal if all of the bits of the checksum are correct, and soft-subtracting the contribution of the high power signal from the received signal if most, but not all, of the bits in the checksum are correct.
摘要翻译： 一种无线电接收机中的方法和装置，用于消除在包括来自高功率信号的贡献和来自低功率信号的贡献的组合信号中接收的高功率，高数据速率信号的干扰。 首先确定高功率信号是否正确接收。 可以使用CRC校验和来确定高功率信号是否以良好的可靠性被接收。 此后，仅当正确接收到高功率信号时，才从接收信号中去除高功率信号的贡献。 如果校验和的所有比特都正确，则可以通过从接收到的信号中硬减去高功率信号的贡献来消除高功率信号的贡献，并且从所接收到的功率信号中减去高功率信号的贡献 信号，如果校验和中的大多数但不是全部的位是正确的。
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3.发明授权公开(公告)号：US07724841B2
公开(公告)日：2010-05-25
申请号：US11538074
申请日：2006-10-03
IPC分类号： H04L27/00
CPC分类号： H04L25/0242 , H04B1/712 , H04B2201/709727 , H04L25/0228
摘要： Channel response and impairment correlation estimates are iteratively determined. According to one embodiment of performing channel estimation for use in received signal processing, a channel response estimate is calculated based on an initial impairment correlations estimate and a measured channel response derived from a received signal. A revised impairment correlations estimate is calculated using a parametric approach based on the channel response estimate and the channel response estimate is recalculated based on the revised impairment correlations estimate. According to one embodiment of a wireless communication device, the device comprises a parameter estimation unit configured to iteratively calculate a medium channel response estimate based on a parametric impairment correlations estimate and a measured net channel response derived from a received signal. The wireless communication device also comprises circuitry configured to control how many times the parameter estimation unit calculates the medium channel response estimate.
摘要翻译： 迭代确定信道响应和损害相关估计。 根据对在接收信号处理中使用的信道估计的一个实施例，基于初始损害相关估计和从接收信号导出的测量信道响应来计算信道响应估计。 使用基于信道响应估计的参数方法来计算修正的损害相关估计，并且基于修正的损害相关估计重新计算信道响应估计。 根据无线通信设备的一个实施例，该设备包括参数估计单元，该参数估计单元被配置为基于参数损害相关估计和从接收到的信号导出的测量的净信道响应来迭代地计算介质信道响应估计。 无线通信设备还包括被配置为控制参数估计单元计算媒体信道响应估计的次数的电路。
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4.发明申请公开(公告)号：US20080080646A1
公开(公告)日：2008-04-03
申请号：US11538074
申请日：2006-10-03
CPC分类号： H04L25/0242 , H04B1/712 , H04B2201/709727 , H04L25/0228
摘要： Channel response and impairment correlation estimates are iteratively determined. According to one embodiment of performing channel estimation for use in received signal processing, a channel response estimate is calculated based on an initial impairment correlations estimate and a measured channel response derived from a received signal. A revised impairment correlations estimate is calculated using a parametric approach based on the channel response estimate and the channel response estimate is recalculated based on the revised impairment correlations estimate. According to one embodiment of a wireless communication device, the device comprises a parameter estimation unit configured to iteratively calculate a medium channel response estimate based on a parametric impairment correlations estimate and a measured net channel response derived from a received signal. The wireless communication device also comprises circuitry configured to control how many times the parameter estimation unit calculates the medium channel response estimate.
摘要翻译： 迭代确定信道响应和损害相关估计。 根据对在接收信号处理中使用的信道估计的一个实施例，基于初始损害相关估计和从接收信号导出的测量信道响应来计算信道响应估计。 使用基于信道响应估计的参数方法来计算修正的损害相关估计，并且基于修正的损害相关估计重新计算信道响应估计。 根据无线通信设备的一个实施例，该设备包括参数估计单元，该参数估计单元被配置为基于参数损害相关估计和从接收到的信号导出的测量的净信道响应来迭代地计算介质信道响应估计。 无线通信设备还包括被配置为控制参数估计单元计算媒体信道响应估计的次数的电路。
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公开(公告)号：US20070189363A1
公开(公告)日：2007-08-16
申请号：US11276069
申请日：2006-02-13
申请人： Hakan Bengt Eriksson , Carmela Cozzo , Ali S. Khayrallah , Gregory E. Bottomley , Yi-Pin Eric Wang
发明人： Hakan Bengt Eriksson , Carmela Cozzo , Ali S. Khayrallah , Gregory E. Bottomley , Yi-Pin Eric Wang
IPC分类号： H04B1/00
CPC分类号： H04B1/712 , H04B1/71052 , H04B1/711 , H04B2201/709727
摘要： The computational complexity required for interference suppression in the reception of wireless communications from multiple users is reduced by sharing information among the users. In some situations, information indicative of a statistical characteristic of the interference is shared among the users. Delays used to produce the interference statistic information are determined based on rake finger delays employed by the users. In some situations, a parameter estimate that is used to calculate combining weights for the users is shared among the users.
摘要翻译： 通过在用户之间共享信息来减少在多个用户的无线通信的接收中的干扰抑制所需的计算复杂度。 在某些情况下，用户之间共享指示干扰的统计特性的信息。 用于产生干扰统计信息的延迟是基于用户使用的耙指延迟来确定的。 在某些情况下，用户之间共享用于计算用户组合权重的参数估计。
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6.发明授权Method and apparatus for shared parameter estimation in a generalized rake receiver 有权广义耙式接收机中共享参数估计的方法和装置公开(公告)号：US08275023B2
公开(公告)日：2012-09-25
申请号：US11609395
申请日：2006-12-12
IPC分类号： H04B1/00
CPC分类号： H04B1/712 , H04B1/7105 , H04B2201/70703 , H04B2201/709727
摘要： Signal impairment correlations for multiple signals in a received multipath signal are constructed by fitting parametric models associated with each high-data-rate signal in the multipath against measured impairment correlations. The estimated model fitting parameters are applied to form impairment correlation estimates for all signals. The models comprise a separate impairment covariance matrix scaled by a model fitting parameter for each high-data-rate signal and a noise covariance matrix scaled by a noise element model fitting parameter. The model fitting parameters may be estimated by a least-squares formulation and applied to form impairment correlation estimates for all signals of interest. The resulting impairment correlation estimates may be provided to G-RAKE receivers or joint scaling demodulators to demodulate the signals while suppressing interference from the high-data-rate signals.
摘要翻译： 通过将与多路径中的每个高数据速率信号相关联的参数模型与测量的损害相关拟合来构造接收的多径信号中的多个信号的信号损害相关。 应用估计的模型拟合参数，形成所有信号的损伤相关估计。 这些模型包括由用于每个高数据速率信号的模型拟合参数和由噪声元素模型拟合参数缩放的噪声协方差矩阵来缩放的单独的损伤协方差矩阵。 模型拟合参数可以通过最小二乘方程式进行估计，并应用于形成所有感兴趣信号的损伤相关估计。 所产生的损害相关估计可以提供给G-RAKE接收机或联合缩放解调器来解调信号，同时抑制来自高数据速率信号的干扰。
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公开(公告)号：US07830952B2
公开(公告)日：2010-11-09
申请号：US11276069
申请日：2006-02-13
申请人： Hakan Bengt Eriksson , Carmela Cozzo , Ali S. Khayrallah , Gregory E. Bottomley , Yi-Pin Eric Wang
发明人： Hakan Bengt Eriksson , Carmela Cozzo , Ali S. Khayrallah , Gregory E. Bottomley , Yi-Pin Eric Wang
IPC分类号： H04B1/00
CPC分类号： H04B1/712 , H04B1/71052 , H04B1/711 , H04B2201/709727
摘要： The computational complexity required for interference suppression in the reception of wireless communications from multiple users is reduced by sharing information among the users. In some situations, information indicative of a statistical characteristic of the interference is shared among the users. Delays used to produce the interference statistic information are determined based on rake finger delays employed by the users. In some situations, a parameter estimate that is used to calculate combining weights for the users is shared among the users.
摘要翻译： 通过在用户之间共享信息来减少在多个用户的无线通信的接收中的干扰抑制所需的计算复杂度。 在某些情况下，用户之间共享指示干扰的统计特性的信息。 用于产生干扰统计信息的延迟是基于用户使用的耙指延迟来确定的。 在某些情况下，用户之间共享用于计算用户组合权重的参数估计。
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8.发明授权公开(公告)号：US07586974B2
公开(公告)日：2009-09-08
申请号：US10968228
申请日：2004-10-19
IPC分类号： H04B1/00
CPC分类号： H04B1/7117 , H04B1/709 , H04B2201/709727
摘要： A Direct-Sequence Code Division Multiple Access (DS-CDMA) receiver and method of allocating probing correlators and combining correlators (fingers). A front-end processor converts received radio signals to baseband samples. Based on average path strengths, a controller adaptively allocates probing correlators to signal paths to de-spread certain received signals. Based on path power estimates, the controller adaptively allocates combining correlators to signal paths. The allocations may be made to minimize the total received power at the receiver, or to achieve acceptable performance for all users.
摘要翻译： 直接序列码分多址（DS-CDMA）接收机和分配探测相关器并组合相关器（手指）的方法。 前端处理器将接收到的无线电信号转换为基带采样。 基于平均路径强度，控制器自适应地将探测相关器分配给信号路径以对某些接收信号进行解扩。 基于路径功率估计，控制器自适应地将组合相关器分配给信号路径。 可以进行分配以最小化接收机处的总接收功率，或为所有用户实现可接受的性能。
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公开(公告)号：US07469024B2
公开(公告)日：2008-12-23
申请号：US10653679
申请日：2003-09-02
IPC分类号： H04B7/10
CPC分类号： H04B1/7113 , H04B1/7117
摘要： A receiver based on a RAKE receiver architecture includes a logic circuit configured to assign one or more RAKE fingers to a finger placement grid that is independent from a searcher delay grid used by the receiver's searcher in generating multipath delay profiles for received signals. The logic circuit may use the multipath delay profile to “tune” the finger placement grid relative to the searcher delay grid but the delay resolution of the finger placement grid is independent of the searcher delay grid. This independence permits, for example, setting the finger placement grid to a delay resolution based on a Nyquist criterion independently from the delay resolution used by the searcher. The receiver may use two or more finger placement grids, may operate in a mixed mode where fingers are assigned on- and off-grid, and may operate selectively in grid or non-grid modes.
摘要翻译： 基于RAKE接收器架构的接收机包括逻辑电路，其被配置为将一个或多个RAKE指状物分配给手指放置网格，该手指放置网格独立于由接收机的搜索器在为接收的信号生成多径延迟分布时使用的搜索器延迟网格。 逻辑电路可以使用多径延迟分布来相对于搜索器延迟网格“调谐”手指放置网格，但手指放置网格的延迟分辨率与搜索器延迟网格无关。 这种独立性允许例如，将独立于搜索者使用的延迟分辨率的手指放置网格设置为基于奈奎斯特准则的延迟分辨率。 接收器可以使用两个或更多个手指放置网格，可以以手指被分配在离线和离网上的混合模式操作，并且可以以网格或非网格模式选择性地操作。
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公开(公告)号：US07460583B2
公开(公告)日：2008-12-02
申请号：US10736122
申请日：2003-12-15
IPC分类号： H04B1/00
CPC分类号： H04B1/707 , H04B1/7117 , H04B2201/709727
摘要： The present application describes a new path search and verification method and apparatus for identifying and selecting one or more delays for a receiver. A front-end receiver receives a signal having one or more signal images, where each signal image has a corresponding signal delay. A tree generator builds a hierarchical delay tree from a plurality of delay nodes, each corresponding to one of the signal delays. A tree searcher searches through the delay tree to identify one or more surviving delay nodes, where each surviving delay node corresponds to a candidate delay for the receiver. The receiver may also include a state machine comprising a plurality of ordered states for providing candidate delays for the receiver. The state machine stores the candidate delays and shifts the candidate delays between states within the state machine based on the latest results from the tree searcher.
摘要翻译： 本申请描述了用于识别和选择接收机的一个或多个延迟的新的路径搜索和验证方法和装置。 前端接收器接收具有一个或多个信号图像的信号，其中每个信号图像具有对应的信号延迟。 树生成器从多个延迟节点构建分层延迟树，每个延迟节点对应于一个信号延迟。 树搜索器通过延迟树搜索以识别一个或多个幸存延迟节点，其中每个存活的延迟节点对应于接收机的候选延迟。 接收机还可以包括状态机，其包括用于为接收机提供候选延迟的多个有序状态。 状态机根据树搜索器的最新结果存储候选延迟并在状态机内状态之间移动候选延迟。
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