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31.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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32.发明授权Method and apparatus for extended least squares estimation for generalized rake receiver parameters using multiple base stations 有权用于使用多个基站的广义耙式接收机参数的扩展最小二乘估计的方法和装置公开(公告)号：US08040938B2
公开(公告)日：2011-10-18
申请号：US11609373
申请日：2006-12-12
IPC分类号： H04B1/00
CPC分类号： H04B1/712 , H04B2201/709727
摘要： Exemplary combining weight generation is based on estimating received signal impairment correlations using a weighted summation of interference impairment terms, such as an interference correlation matrix associated with a transmitting base station, and a noise impairment term, such as a noise correlation matrix, the impairment terms scaled by fitting parameters. The estimate is updated based on adapting the fitting parameters responsive to measured signal impairment correlations. The interference matrices are calculated from channel estimates and delay information, and knowledge of the receive filter pulse shape. Instantaneous values of the fitting parameters are determined by fitting the impairment correlation terms to impairment correlations measured at successive time instants and the fitting parameters are adapted at each time instant by updating the fitting parameters based on the instantaneous values.
摘要翻译： 示例性组合权重生成是基于使用干扰损害项的加权求和来估计接收到的信号损害相关性，例如与发射基站相关联的干扰相关矩阵，以及诸如噪声相关矩阵之类的噪声损害项，损伤项 通过拟合参数进行缩放。 基于对测量的信号损伤相关性的适应参数进行修改，估计更新。 干扰矩阵由信道估计和延迟信息以及接收滤波器脉冲形状的知识计算。 拟合参数的瞬时值通过将损害相关项拟合到在连续时刻测量的损伤相关性来确定，并且通过基于瞬时值更新拟合参数，在每个时刻适应拟合参数。
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公开(公告)号：US20110111790A1
公开(公告)日：2011-05-12
申请号：US13008523
申请日：2011-01-18
IPC分类号： H04B7/00
CPC分类号： H04W52/56 , H04B17/336 , H04B2201/709727 , H04W52/12
摘要： A wireless communication device or system generates transmit power control feedback for a received power control channel by determining a command error rate (CER), or by identifying a target signal quality for the power control channel according to a defined signal-quality-to-CER mapping function. Generally, the power control channel does not include error-coded data to use for CER estimation. However, in one embodiment, the channel does include known reference bits that are evaluated for CER estimation, with the estimated CER used to set the signal quality target for inner loop power control. In other embodiments, a computed reception error probability is used to identify a CER estimate according to a defined probability-to-CER mapping function. By way of non-limiting example, these embodiments may be used to provide power control feedback for power control commands transmitted on a Fractional Dedicated Physical Channel in WCDMA systems.
摘要翻译： 无线通信设备或系统通过确定命令错误率（CER）或者通过根据定义的信号质量到CER来识别功率控制信道的目标信号质量来为接收到的功率控制信道生成发射功率控制反馈 映射功能。 通常，功率控制信道不包括用于CER估计的错误编码数据。 然而，在一个实施例中，信道确实包括对CER估计进行评估的已知参考比特，其中估计的CER用于设置用于内环功率控制的信号质量目标。 在其他实施例中，使用计算的接收错误概率来根据所定义的概率到CER映射函数来识别CER估计。 作为非限制性示例，这些实施例可以用于为在WCDMA系统中的分数专用物理信道上发送的功率控制命令提供功率控制反馈。
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公开(公告)号：US20110075767A1
公开(公告)日：2011-03-31
申请号：US12568036
申请日：2009-09-28
IPC分类号： H04L27/06
CPC分类号： H04L25/03178 , H04L25/03203 , H04L25/03331 , H04L2025/03426
摘要： Teachings presented herein offer reduced computational complexity for detecting a plurality of symbol blocks, even for symbol blocks that comprise the combination of a relatively large number of symbols. The teachings perform two or more stages of detection assistance to successively reduce the number of candidate combinations of symbols to be considered for a symbol block when detecting the plurality of symbol blocks. In particular, the teachings identify a reduced set of candidate symbol combinations for at least one symbol block in the plurality of symbol blocks, and then jointly detect each of one or more distinct groups of symbols in the symbol block to determine from that reduced set a final reduced set of candidate symbol combinations. Detection of the plurality of symbol blocks limits the candidate combinations of symbols considered for a symbol block to the final reduced set of candidate symbol combinations identified for that symbol block.
摘要翻译： 本文中提供的教学提供了用于检测多个符号块的减少的计算复杂度，即使对于包括相对大量符号的组合的符号块也是如此。 该教导执行检测辅助的两个或多个阶段，以便在检测到多个符号块时，连续地减少要用于符号块的符号候选组合的数量。 具体地，教导识别多个符号块中的至少一个符号块的候选符号组合的缩减集合，然后共同检测符号块中的一个或多个不同符号组中的每个，以从该缩减集合a 候选符号组合的最终缩减集合。 多个符号块的检测将针对符号块考虑的符号的候选组合限制为为该符号块识别的候选符号组合的最终缩减集合。
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公开(公告)号：US07873098B2
公开(公告)日：2011-01-18
申请号：US11739126
申请日：2007-04-24
IPC分类号： H04B1/00
CPC分类号： H04B1/71055 , H04B1/7107 , H04B2201/709727
摘要： Detecting a symbol of interest comprises despreading a received signal to obtain despread values corresponding to the symbol of interest and to one or more interfering symbols, combining the despread values to generate combined values for the symbol of interest and the interfering symbols, computing spreading waveform correlations between the spreading waveform for the symbol of interest and the spreading waveforms for the interfering symbols, computing interference rejection terms representing the interference present in the combined value for the symbol of interest attributable to the interfering symbols based on the spreading waveform correlations, and generating an estimate of the symbol of interest by combining the combined values with the interference rejection terms. The interference rejection terms are computed by scaling the spreading waveform correlations by corresponding signal powers and compensating the estimates for noise. This provides a robust interference model that avoids numerical problems associated with conventional joint detection.
摘要翻译： 检测感兴趣的符号包括解扩接收信号以获得对应于感兴趣符号的解扩值和一个或多个干扰符号，组合解扩值以产生感兴趣符号和干扰符号的组合值，计算扩展波形相关性 在感兴趣符号的扩展波形和干扰符号的扩展波形之间，基于扩展波形相关性计算代表归因于干扰符号的感兴趣符号的组合值中存在的干扰的干扰抑制项， 通过将组合值与干扰抑制项组合来估计感兴趣的符号。 通过相应的信号功率缩放扩展波形相关性并补偿噪声的估计来计算干扰抑制项。 这提供了一个强大的干扰模型，可以避免与常规关节检测相关的数值问题。
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公开(公告)号：US07848387B2
公开(公告)日：2010-12-07
申请号：US11751109
申请日：2007-05-21
IPC分类号： H04B1/00
CPC分类号： H04B1/712 , H04B7/0634 , H04B2201/709727
摘要： A parametric form of G-Rake and chip equalization for closed-loop transmit diversity is provided, that accounts for impairment correlation between transmit antennas. In a closed-loop transmit diversity system, the base station transmits a signal from two or more antennas, using one of a predetermined set of relative phase offsets at one of the antennas. The parametric estimation of the impairment or data covariance is performed by summing terms, including a term for each possible phase offset. The terms are weighted by fitting parameters. The fitting parameters are jointly solved by fitting the impairment or data covariance estimate to a measured impairment or data covariance. In another aspect, a measured impairment covariance is formed by exploiting a special relationship between the pilot channels of the different transmit antennas.
摘要翻译： 提供了用于闭环发射分集的G-Rake和码片均衡的参数形式，其考虑了发射天线之间的损害相关性。 在闭环发射分集系统中，基站使用在天线之一处的预定相对相位偏移集合中的一个从两个或多个天线发射信号。 损伤或数据协方差的参数估计是通过求和术语来执行的，包括每个可能的相位偏移的项。 这些术语通过拟合参数加权。 拟合参数通过将损伤或数据协方差估计拟合为测量的损伤或数据协方差来共同解决。 在另一方面，通过利用不同发射天线的导频信道之间的特殊关系来形成测量的损害协方差。
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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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公开(公告)号：US07773950B2
公开(公告)日：2010-08-10
申请号：US10869527
申请日：2004-06-16
IPC分类号： H04B17/00
CPC分类号： H04L1/20 , H04B2201/709727 , H04L1/0003 , H04L1/0026 , H04L1/206
摘要： A receiver circuit suppresses effects of “benign” impairment from the calculation of received signal quality estimates, such that the estimate depends primarily on the effects of non-benign impairment. For example, a received signal may be subject to same-cell and other-cell interference plus noise, which is generally modeled using a Gaussian distribution, and also may be due to certain forms of self-interference, such as quadrature phase interference arising from imperfect derotation of the pilot samples used to generate channel estimates for the received signal. Such interference generally takes on a distribution defined by the pilot signal modulation, e.g., a binomial distribution for binary phase shift keying modulation. Interference arising from such sources is relatively “benign” as compared to Gaussian interference and thus should be suppressed or otherwise discounted in signal quality calculations. Suppression may be based on subtracting benign impairment correlation estimates from total impairment correlation estimates, or on filtering the benign impairment in channel estimation.
摘要翻译： 接收机电路抑制从接收到的信号质量估计的计算中的“良性”损伤的影响，使得估计主要取决于非良性损伤的影响。 例如，接收到的信号可以经受相同小区和其他小区干扰加噪声，其通常使用高斯分布来建模，并且还可能是由于某些形式的自干扰，例如由 用于产生接收信号的信道估计的导频样本的不完全解旋。 这种干扰通常采用由导频信号调制定义的分布，例如二进制相移键控调制的二项分布。 与高斯干扰相比，从这些源产生的干扰相对“良性”，因此在信号质量计算中应被抑制或以其他方式折扣。 抑制可以基于从总损伤相关性估计中减去良性损伤相关估计，或者在滤波信道估计中的良性损伤。
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39.发明申请公开(公告)号：US20100124206A1
公开(公告)日：2010-05-20
申请号：US12572423
申请日：2009-10-02
CPC分类号： H04W4/06 , H04B1/707 , H04B2201/70701 , H04J3/00 , H04J13/0044 , H04J13/20
摘要： A pilot channel signal for time-division multiplexing with one or more traffic channel signals in a broadcast/multi-cast signal and for code-division multiplexing with a continuously transmitted pilot channel signal is described. In an exemplary method for transmitting a broadcast/multicast signal, a pilot symbol sequence is obtained for each slot of one or more frames of the broadcast/multicast signal, so that the pilot symbol sequence varies for each slot of a given frame. The pilot symbol sequence for each slot is spread with a channelization code, and the spread pilot symbol sequence for each slot is scrambled, using a scrambling code, to form a first pilot channel signal. The first pilot channel signal is transmitted so that it is time-division multiplexed with one or more traffic channel signals transmitted during each slot and code-division multiplexed with a second pilot channel signal transmitted during all slots of the one or more frames.
摘要翻译： 描述了用于与广播/多播信号中的一个或多个业务信道信号进行时分复用并用于与连续发送的导频信道信号进行码分复用的导频信道信号。 在用于发送广播/多播信号的示例性方法中，为广播/多播信号的一个或多个帧的每个时隙获得导频符号序列，使得导频符号序列对于给定帧的每个时隙而变化。 每个时隙的导频符号序列用信道化码扩展，并且使用扰码对每个时隙的扩展导频符号序列进行加扰，以形成第一导频信道信号。 发送第一导频信道信号，使其与在每个时隙期间发送的一个或多个业务信道信号进行时分复用，并与在一个或多个帧的所有时隙期间发送的第二导频信道进行码分多路复用。
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40.发明申请METHOD AND APPARATUS FOR DEMODULATION OF QAM SIGNAL USING SYMBOL-SPECIFIC AMPLITUDE REFERENCE ESTIMATION 审中-公开使用符号特征参数估计的QAM信号解调的方法和装置公开(公告)号：US20090316674A1
公开(公告)日：2009-12-24
申请号：US12141607
申请日：2008-06-18
IPC分类号： H04J13/04
CPC分类号： H04B1/712 , H04B1/7105 , H04B2201/709727
摘要： According to the teachings presented herein, “spreading code” knowledge is used in forming amplitude references for QAM demodulation in a DS-CDMA receiver. Here, “spreading code” broadly refers to spreading/channelization codes, scrambling codes, or the product of such codes. Further, these teachings apply to any linear DS-CDMA demodulator, such as Rake, Generalized Rake (G-Rake), or chip equalizer, and to nonlinear demodulators that employ linear filtering, such as decision feedback equalizers (DFEs). Advantageously, the determination of symbol-specific amplitude references relies on shared correlation estimates and/or shared combining weights that are common to two or more symbols of interest, thereby significantly reducing processing requirements as compared to the use of symbol-specific impairment correlation estimates.
摘要翻译： 根据本文提出的教导，在DS-CDMA接收机中使用“扩展码”知识来形成QAM解调的幅度参考。 这里，“扩展码”广泛地指扩频/信道化码，扰码或这些码的乘积。 此外，这些教导适用于任何线性DS-CDMA解调器，例如Rake，Generalized Rake（G-Rake）或码片均衡器，以及采用线性滤波的非线性解调器，例如判决反馈均衡器（DFE）。 有利地，符号特定幅度参考的确定依赖于两个或多个感兴趣符号共有的共享相关估计和/或共享组合权重，从而与使用符号特异性损害相关估计相比显着地减少了处理要求。
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