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31.发明授权Method and apparatus for selective demodulation and decoding of communications signals 有权用于选择性解调和解码通信信号的方法和装置公开(公告)号：US07440489B2
公开(公告)日：2008-10-21
申请号：US09923374
申请日：2001-08-07
申请人： Erik Dahlman , Yi-Pin Eric Wang , Paul W. Dent , Gregory E. Bottomley , Ali Khayrallah , Christer Östberg
发明人： Erik Dahlman , Yi-Pin Eric Wang , Paul W. Dent , Gregory E. Bottomley , Ali Khayrallah , Christer Östberg
CPC分类号： H04B1/7115 , H04B1/7075 , H04B1/709 , H04B1/712 , H04B2201/7071 , H04B2201/709727
摘要： A spread spectrum signal is processed by correlating the spread spectrum signal with a spreading sequence at a first plurality of correlation times to produce a first plurality of time-offset correlations. The first plurality of time-offset correlations is processed to produce a first symbol representation for a symbol. A first quality is determined for the first symbol representation. Responsive to the determined first quality, it is determined whether to further process the first symbol representation or to process a second symbol representation for the symbol generated from the spread spectrum signal. The first quality may be determined, for example, by decoding the first symbol representations to generate a decoding metric or error check indicator, such as a CRC result. The symbol representations may be generated and/or evaluated for quality in a serial fashion or a parallel fashion.
摘要翻译： 通过在第一多个相关时间将扩展频谱信号与扩频序列相关来处理扩展频谱信号，以产生第一多个时间偏移相关。 处理第一多个时间偏移相关以产生符号的第一符号表示。 确定第一个符号表示的第一个质量。 响应于确定的第一质量，确定是否进一步处理第一符号表示或处理从扩频信号产生的符号的第二符号表示。 可以例如通过对第一符号表示进行解码以产生诸如CRC结果的解码度量或错误检查指示符来确定第一质量。 符号表示可以以串行方式或并行方式生成和/或评估质量。
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32.发明申请Method and Apparatus for Suppressing Interference Based on Channelization Code Power Estimation with Bias Removal 有权基于信道化代码功率估计的偏移消除抑制干扰的方法和装置公开(公告)号：US20080130719A1
公开(公告)日：2008-06-05
申请号：US11566756
申请日：2006-12-05
IPC分类号： H04B1/707
CPC分类号： H04B1/712
摘要： Processing in a baseband processor is improved by estimating channelization code powers when processing received signals and reducing at least one of interference and noise power from the code power estimates. According to one embodiment of a wireless communication device such as a mobile phone or Local Area Network (LAN) adapter, the device comprises circuitry configured to receive a composite signal having contributions from a signal of interest and one or more interfering signals and a baseband processor. The baseband processor is configured to estimate channelization code powers for a channelization code associated with the signal of interest and one or more channelization codes associated with the one or more interfering signals. The baseband processor is also configured to reduce at least one of interference and noise power from the channelization code power estimates.
摘要翻译： 通过在处理接收到的信号时估计信道化码功率并且从代码功率估计中减少干扰和噪声功率中的至少一个来改善基带处理器中的处理。 根据诸如移动电话或局域网（LAN）适配器的无线通信设备的一个实施例，该设备包括被配置为接收具有来自感兴趣的信号和一个或多个干扰信号的贡献的复合信号的电路和基带处理器 。 基带处理器被配置为估计与感兴趣的信号相关联的信道化码和与一个或多个干扰信号相关联的一个或多个信道化码的信道化码功率。 基带处理器还被配置为从信道化码功率估计中减少干扰和噪声功率中的至少一个。
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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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公开(公告)号：US09124458B2
公开(公告)日：2015-09-01
申请号：US12568036
申请日：2009-09-28
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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35.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：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：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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