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11.发明授权Signal processor for estimating signal parameters using an approximated inverse matrix 有权用于使用近似逆矩阵估计信号参数的信号处理器公开(公告)号：US08045645B2
公开(公告)日：2011-10-25
申请号：US11969692
申请日：2008-01-04
申请人： Gregory E. Bottomley
发明人： Gregory E. Bottomley
CPC分类号： H04B7/0854 , H04B1/71052 , H04B1/712 , H04B2201/709727 , H04L25/0204 , H04L25/0212 , H04L25/0244
摘要： A device that estimates information from a signal includes a receiver for receiving an input signal and electronic processing circuitry. The electronic processing circuitry generates a matrix associated with the input signal and determines an approximation of an inverse of the matrix based on the adjoint of the matrix and a scaling factor associated with the determinant of the matrix. This approximation avoids possible mathematical difficulties that may be encountered in certain situations when a typical matrix inversion is calculated. The approximated inverse matrix is applied to the input signal to transform the input signal into an output signal. Information associated with the input signal is then determined based on the output signal.
摘要翻译： 从信号估计信息的装置包括用于接收输入信号的接收器和电子处理电路。 电子处理电路产生与输入信号相关联的矩阵，并且基于矩阵的伴随和与矩阵的行列式相关联的缩放因子来确定矩阵的逆的近似。 这种近似避免了在计算典型矩阵反演时在某些情况下可能遇到的可能的数学困难。 将近似的逆矩阵施加到输入信号以将输入信号变换为输出信号。 然后基于输出信号确定与输入信号相关联的信息。
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公开(公告)号：US08000655B2
公开(公告)日：2011-08-16
申请号：US12339967
申请日：2008-12-19
IPC分类号： H04B1/00
CPC分类号： H04B1/7103 , H04B7/0891
摘要： A node (e.g., base station, signal processing unit) is described herein that includes a symbol detector and a method which are capable of suppressing interference caused by one user device (which may be in softer handoff mode) to reduce performance degradation to other intra-cell user devices and/or other inter-cell user devices (which may not be in softer handoff mode).
摘要翻译： 本文描述了一种节点（例如，基站，信号处理单元），其包括能够抑制由一个用户设备（其可能处于更软切换模式）引起的干扰的符号检测器和方法，以降低其他内部 - 小区用户设备和/或其他小区间用户设备（其可能不处于更软切换模式）。
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公开(公告)号：US20110129000A1
公开(公告)日：2011-06-02
申请号：US12628341
申请日：2009-12-01
CPC分类号： H04L25/03006 , H04B1/71057 , H04B2201/709727 , H04L25/03178 , H04L25/03203 , H04L25/03331 , H04L2025/03426
摘要： The computation of code-specific channel matrices for an Assisted Maximum Likelihood Detection (AMLD) receiver comprises separately computing high rate matrices that change each symbol period, and a low rate matrix that is substantially constant over a plurality of symbol periods. The high and low rate matrices are combined to generate a code-specific channel matrix for each receiver stage. The high rate matrices include scrambling and spreading code information, and the low rate matrices include information on the net channel response and combining weights. The low rate matrices are efficiently computed by a linear convolution in the frequency domain of the net channel response and combining weights (with zero padding to avoid circular convolution), then transforming the convolution to the time domain and extracting matrix elements. Where the combining weights are constant across stages, a common code-specific channel matrix may be computed and used in multiple AMLD receiver stages.
摘要翻译： 用于辅助最大似然检测（AMLD）接收机的代码特定信道矩阵的计算包括分别计算改变每个符号周期的高速率矩阵和在多个符号周期上基本上恒定的低速率矩阵。 组合高速和低速率矩阵以为每个接收机级生成代码特定的信道矩阵。 高速率矩阵包括加扰和扩展码信息，低速率矩阵包括关于网络信道响应和组合权重的信息。 低速率矩阵通过网络通道响应的频域中的线性卷积和组合权重（零填充以避免循环卷积）有效地计算，然后将卷积变换到时域并提取矩阵元素。 在组合权重跨越阶段恒定的情况下，可以在多个AMLD接收机阶段中计算和使用公共的特定码通道矩阵。
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公开(公告)号：US20110075769A1
公开(公告)日：2011-03-31
申请号：US12572703
申请日：2009-10-02
申请人： Gregory E. Bottomley
发明人： Gregory E. Bottomley
IPC分类号： H03D1/00
CPC分类号： H04L25/03318 , H04L25/03184 , H04L25/0321 , H04L25/03229 , H04L25/03331 , H04L25/067 , H04L2025/03401 , H04L2025/03414 , H04L2025/03426
摘要： Teachings presented herein offer reduced and stable computational complexity for symbol block detection using multi-stage assistance, and also provide for the generation of soft bit values. A demodulator generates these soft bit values by forming from a set of candidate symbol combinations, for each group of symbols in a symbol block, a subset of candidate symbol combinations for that group. The demodulator selects from the set the most likely combination, at least one combination that has a complementary bit value for a respective bit value in the most likely combination, and as many of the next most likely combinations not already selected as are needed for the size of the subset to conform to a pre-determined size. The demodulator generates soft bit values by limiting the candidate combinations of symbols considered for a symbol block according to the subsets formed for the groups of symbols in that symbol block.
摘要翻译： 本文提出的教学为使用多级协助的符号块检测提供了降低和稳定的计算复杂度，并且还提供了生成软比特值。 解调器通过从符号块中的每个符号组的一组候选符号组合形成该组的候选符号组合的子集来生成这些软比特值。 解调器从集合中选择最可能的组合，对于最可能的组合中的相应位值具有互补位值的至少一个组合，以及未被选择的许多下一个最可能的组合对于尺寸是必需的 的子集以符合预定的大小。 解调器通过根据为该符号块中的符号组形成的子集限制符号块所考虑的符号的候选组合来产生软比特值。
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公开(公告)号：US07899015B2
公开(公告)日：2011-03-01
申请号：US11681302
申请日：2007-03-02
IPC分类号： H04B7/216
CPC分类号： H04W72/0406 , H04B2201/709727 , H04W4/18 , H04W48/08 , H04W72/082
摘要： Method and apparatuses taught herein enable link adaptation feedback to be determined in advance for future transmit intervals, based on one or more data sending units sending indications of future transmit resource allocations, and receiving corresponding link adaptation feedback from data receiving units. Knowledge of the future transmit resource allocations enable individual data sending units to predict interference conditions for the future transmit interval, and thereby compute link adaptation feedback that takes advantage of low-interference conditions. Individual data sending units receive link adaptation feedback for the future transmit interval from the data receiving units they are supporting, and make corresponding link adaptations for the future transmit interval. Such operations are, in one or more embodiments, carried out in a Wideband Code Division Multiple Access (WCDMA), Long Term Evolution LTE), or WiMAX network, wherein the data sending units comprise radio base stations, and the data receiving units comprise wireless communication devices.
摘要翻译： 基于一个或多个数据发送单元发送未来发送资源分配的指示，以及从数据接收单元接收相应的链路适配反馈，本文教导的方法和装置使能够针对未来的发射间隔预先确定链路自适应反馈。 对未来发送资源分配的了解使各个数据发送单元能够预测未来发射间隔的干扰条件，从而计算利用低干扰条件的链路自适应反馈。 单个数据发送单元从其所支持的数据接收单元接收将来发送间隔的链路自适应反馈，并对未来发送间隔进行相应的链路适配。 在一个或多个实施例中，这样的操作在宽带码分多址（WCDMA），长期演进LTE）或WiMAX网络中进行，其中数据发送单元包括无线电基站，并且数据接收单元包括无线 通讯设备。
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公开(公告)号：US07773557B2
公开(公告)日：2010-08-10
申请号：US11538568
申请日：2006-10-04
CPC分类号： H04W72/1231 , H04B7/0452 , H04B7/0632 , H04B7/0665 , H04B7/0669 , H04W52/287 , H04W52/325 , H04W52/346 , H04W52/42 , H04W72/042
摘要： In a mobile communication system with a shared downlink traffic channel, the mobile terminals in contention for the downlink traffic channel report channel conditions to the base stations. The base station schedules the mobile terminals based on channel quality estimates from the mobile terminals and selects a transmitter configuration. The transmitter configuration may comprise, for example, the antenna configuration, and/or power and code allocations used by the base station. The base station broadcasts the transmitter configuration to all active and inactive mobile terminals. Knowledge of the transmitter configuration by the inactive mobile terminals improves the accuracy and reliability of the channel quality estimates.
摘要翻译： 在具有共享下行链路业务信道的移动通信系统中，对于下行链路业务信道的竞争的移动终端向基站报告信道状况。 基站根据来自移动终端的信道质量估计来调度移动终端，并选择发射机配置。 发射机配置可以包括例如基站使用的天线配置和/或功率和码分配。 基站将发射机配置广播到所有活动和不活动的移动终端。 由非活动移动终端知道发射机配置提高了信道质量估计的准确性和可靠性。
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17.发明授权Apparatus, methods and computer program products for delay selection in a spread-spectrum receiver 有权用于扩频接收机中的延迟选择的装置，方法和计算机程序产品公开(公告)号：US07769078B2
公开(公告)日：2010-08-03
申请号：US10959923
申请日：2004-10-06
IPC分类号： H04B1/00
CPC分类号： H04B1/712 , H04B1/709 , H04B1/7117 , H04B2201/709727
摘要： Channel and correlation characteristics are determined for a composite signal. Respective combining weights for information from the composite signal are determined for respective ones of a plurality of candidate delays based on the determined channel and correlation characteristics. A group of delays, e.g., RAKE correlator delays or chip equalizer filter taps, is selected from the plurality of candidate delays based on the determined weights. Information from the composite signal for the selected delays is processed according to a spreading code to generate a symbol estimate. The invention may be embodied as methods, apparatus and computer program products.
摘要翻译： 为复合信号确定通道和相关特性。 基于确定的信道和相关特性，针对多个候选延迟中的各个确定来自复合信号的信息的相应组合权重。 基于所确定的权重，从多个候选延迟中选择一组延迟，例如RAKE相关器延迟或码片均衡器滤波器抽头。 根据扩展码处理来自所选延迟的复合信号的信息以产生符号估计。 本发明可以体现为方法，装置和计算机程序产品。
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18.发明授权公开(公告)号：US07738534B2
公开(公告)日：2010-06-15
申请号：US11566820
申请日：2006-12-05
IPC分类号： H04B1/707
CPC分类号： H04B1/712 , H04B1/7107 , H04B1/7115 , H04B2201/709727 , H04J13/0077
摘要： Multi-transmitter interference caused by one or more interfering own-cell and/or other-cell transmitters is reduced in a RAKE-based receiver. The RAKE-based receiver comprises a plurality of RAKE fingers, a processor and a combiner. The plurality of RAKE fingers are configured to despread received symbols, wherein a delay for a first one of the plurality of RAKE fingers corresponds to a symbol of interest transmitted by a first transmitter and a delay for a second one of the plurality of RAKE fingers corresponds to an interfering symbol transmitted by a second transmitter. The processor is configured to determine a cross-correlation between the symbol of interest and the interfering symbol. The combiner is configured to combine the symbol of interest with the interfering symbol using the cross-correlation to reduce interference attributable to the interfering symbol from the symbol of interest.
摘要翻译： 在基于RAKE的接收机中减少由一个或多个干扰自身小区和/或其他小区发射机引起的多发射机干扰。 基于RAKE的接收机包括多个RAKE指，处理器和组合器。 多个RAKE指状物被配置为对接收到的符号进行解扩，其中多个RAKE指中的第一个RAKE指的延迟对应于由第一发送器发送的感兴趣的符号，并且多个RAKE指中的第二个对应的延迟对应 到由第二发射机发射的干扰符号。 处理器被配置为确定感兴趣的符号和干扰符号之间的互相关。 组合器被配置为使用互相关来组合感兴趣的符号与干扰符号，以减少归因于感兴趣符号的干扰符号的干扰。
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19.发明申请公开(公告)号：US20090323777A1
公开(公告)日：2009-12-31
申请号：US12147260
申请日：2008-06-26
CPC分类号： H04B1/712 , H04B1/7107 , H04B1/71072 , H04B2201/709727
摘要： Methods and apparatus are disclosed for suppressing both own-cell and other-cell interference in the processing of multiple signals of interest in a received composite signal. In an exemplary embodiment of the methods disclosed herein, combining weights for each of a first plurality of signals of interest in a composite information signal are computed, based on first shared signal correlation data computed from the composite information signal. A reduced-interference composite signal is calculated from the composite information signal, using, for instance, subtractive interference cancellation or interference projection techniques. Combining weights for processing each of a second plurality of signals of interest are computed as a function of second shared signal correlation data corresponding to the reduced-interference composite signal. Corresponding apparatus, including G-Rake and chip equalizer embodiments are also disclosed.
摘要翻译： 公开了用于在接收到的复合信号中处理多个感兴趣信号的同时抑制自身小区和其他小区干扰的方法和装置。 在本文公开的方法的示例性实施例中，基于从复合信息信号计算的第一共享信号相关数据来计算组合信息信号中的感兴趣的第一多个信号中的每一者的权重。 使用例如减法干扰消除或干涉投影技术，从复合信息信号计算降低干扰的复合信号。 作为与减小干涉复合信号对应的第二共享信号相关数据的函数，计算用于处理感兴趣的第二多个信号中的每一个的组合权重。 还公开了包括G-Rake和码片均衡器实施例的相应装置。
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20.发明申请Method and Apparatus for Symbol Detection via Reduced Complexity Sequence Estimation Processing 有权通过减少复杂度序列估计处理进行符号检测的方法和装置公开(公告)号：US20090213908A1
公开(公告)日：2009-08-27
申请号：US12035932
申请日：2008-02-22
申请人： Gregory E. Bottomley
发明人： Gregory E. Bottomley
CPC分类号： H04L25/03292
摘要： Teachings presented herein offer the performance advantages of sequence estimation for received signal symbol detection, while simultaneously providing potentially significant reductions in computational overhead. Initial demodulation of a received signal identifies a reduced number of candidate symbol values for all or a subset of a sequence of symbols represented in a received signal. A sequence estimation process, e.g., an MLSE process, constrains its state spaces to the reduced number of candidate symbols values, rather than considering all possible symbol values.
摘要翻译： 本文提供的教学提供了接收信号符号检测的序列估计的性能优势，同时提供潜在的显着降低计算开销。 接收信号的初始解调识别在接收信号中表示的符号序列的全部或子集的候选符号值的减少数量。 序列估计过程，例如MLSE过程，将其状态空间限制为减少的候选符号值的数量，而不是考虑所有可能的符号值。
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