公开(公告)号：US20050069023A1

公开(公告)日：2005-03-31

申请号：US10672127

申请日：2003-09-26

申请人： Gregory Bottomley ,  Carmela Cozzo ,  Ali Khayrallah ,  Dignus-Jan Moelker

发明人： Gregory Bottomley ,  Carmela Cozzo ,  Ali Khayrallah ,  Dignus-Jan Moelker

IPC分类号： H04B1/707

CPC分类号： H04B1/712 ,  H04B1/711 ,  H04B2201/709727

摘要： A RAKE receiver circuit generates combining weights based on channel estimates and combining statistics that comprise channel coefficient statistics, noise statistics, and channel estimation error statistics. Together, these statistics incorporate the relationships in noise and channel estimation across two or more RAKE fingers, and thus improve combining weight generation. Exemplary determination of statistics comprises channel coefficient cross-correlations, noise cross-correlations, and channel estimation error cross-correlations. Determination of the statistics can be varied based on, for example, the assumption of default or nominal signal models. Further, statistics determination can be configured for different receive and transmit diversity scenarios, wherein combining statistics can be determined on a per diversity signal basis, or jointly for two or more diversity signals, or in a mixed separate/joint method wherein one or more statistics are determined on a per signal basis and one or more statistics are determined across the signals.

摘要翻译： RAKE接收机电路基于信道估计产生组合权重，并组合包括信道系数统计，噪声统计和信道估计误差统计的统计。 一起，这些统计结合了两个或更多个RAKE手指之间的噪声和信道估计的关系，从而改进了组合权重的产生。 统计量的示例性确定包括信道系数互相关，噪声互相关和信道估计误差互相关。 统计数据的确定可以根据例如默认或标称信号模型的假定而变化。 此外，可以针对不同的接收和发送分集场景配置统计确定，其中组合统计可以基于每个分集信号或联合地为两个或更多个分集信号确定，或者以混合分离/联合方法，其中一个或多个统计 在每个信号的基础上确定，并且跨信号确定一个或多个统计。

公开(公告)号：US20100254446A1

公开(公告)日：2010-10-07

申请号：US12419053

申请日：2009-04-06

申请人： Ali Khayrallah ,  Gregory Bottomley

发明人： Ali Khayrallah ,  Gregory Bottomley

IPC分类号： H04L27/01

CPC分类号： H04B7/005 ,  H04L25/03178

摘要： A receiver and method are described herein that address inter-symbol interference in a received signal by using a two-stage equalizer which includes a first demodulation stage that processes the received signal and produces initial symbol decisions, and a non-linear equalization second stage that uses the received signal to perform a sequential search in an attempt to improve upon the initial symbol decisions where if able to improve upon the initial symbol decisions then an output sequence is obtained from the sequential search and if not able to improve upon the sequence metric threshold then the output sequence is the initial symbol decisions.

摘要翻译： 本文描述了一种接收机和方法，其通过使用包括处理接收信号并产生初始符号决定的第一解调级的两级均衡器来解决接收信号中的符号间干扰，以及非线性均衡第二级， 使用所接收的信号来执行顺序搜索以尝试改进初始符号决定，其中如果能够改进初始符号判定，则从顺序搜索获得输出序列，并且如果不能改进序列度量阈值 那么输出序列是初始符号决定。

公开(公告)号：US07558533B2

公开(公告)日：2009-07-07

申请号：US11936193

申请日：2007-11-07

申请人： Carmela Cozzo ,  Gregory Bottomley ,  Rajaram Ramesh

发明人： Carmela Cozzo ,  Gregory Bottomley ,  Rajaram Ramesh

IPC分类号： H04B15/00

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

摘要： A receiver is described herein that is capable of receiving and processing a radio signal and further capable of using interpolation to initialize receiver parameters when there is a change in at least one delay associated with the received radio signal or when there is at least one new correlator position. For instance, the receiver parameters that can be initialized include: (1) channel coefficients; (2) AFC parameters; (3) tracking parameters; (4) noise statistics (noise correlations); (5) signal statistics (channel coefficient correlations); (6) data statistics (despread values or chip samples); or (7) combining weights.

摘要翻译： 本文描述了一种接收机，其能够接收和处理无线电信号，并且还能够在存在与所接收的无线电信号相关联的至少一个延迟中的变化时或者当存在至少一个新的相关器时使用内插来初始化接收机参数 位置。 例如，可以初始化的接收机参数包括：（1）信道系数; （2）AFC参数; （3）跟踪参数; （4）噪声统计（噪声相关）; （5）信号统计（信道系数相关）; （6）数据统计（去扩展值或芯片样本）; 或（7）组合权重。

公开(公告)号：US20070244953A1

公开(公告)日：2007-10-18

申请号：US11357816

申请日：2006-02-17

申请人： Yi-Pin Wang ,  Gregory Bottomley ,  Andres Reial

发明人： Yi-Pin Wang ,  Gregory Bottomley ,  Andres Reial

IPC分类号： G06F7/38

CPC分类号： G06F7/5443 ,  H04B2201/709727

摘要： A method and corresponding circuit for determining a final result for a desired series of multiply-and-accumulate (MAC) operations are based on counting the occurrence of products in the desired series of MAC operations, multiplying the counts by their corresponding products to obtain partial sums, and adding the partial sums to obtain the final result. MAC processing as taught herein can be applied to a wide range of applications, such as received signal processing in wireless communication for computationally efficient (and high-rate) generation of interference correlation estimates and/or equalization filter values for a received communication signal.

摘要翻译： 用于确定期望的一系列乘法和累加（MAC）操作的最终结果的方法和相应的电路是基于计算所需系列MAC操作中的乘积的发生，将计数乘以其相应乘积以获得部分 总和，并添加部分和以获得最终结果。 如本文教导的MAC处理可以应用于广泛的应用，例如用于无线通信中的接收信号处理，用于接收的通信信号的计算有效（和高速率）产生干扰相关估计和/或均衡滤波器值。

公开(公告)号：US20070104254A1

公开(公告)日：2007-05-10

申请号：US11566820

申请日：2006-12-05

申请人： Gregory Bottomley ,  Yi-Pin Wang

发明人： Gregory Bottomley ,  Yi-Pin Wang

IPC分类号： H04B1/00

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拨号被配置为对接收的符号进行解扩，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。

公开(公告)号：US20060293074A1

公开(公告)日：2006-12-28

申请号：US11167370

申请日：2005-06-27

申请人： Gregory Bottomley ,  Ali Khayrallah ,  Erik Dahlman

发明人： Gregory Bottomley ,  Ali Khayrallah ,  Erik Dahlman

IPC分类号： H04B7/00

CPC分类号： H04W52/322 ,  H04W52/247

摘要： A system and method for adapting a broadcast service in a cellular communication network. A base station receives indications of channel quality from registered users of the broadcast service, and adapts broadcast transmission parameters to improve channel quality for the broadcast users if at least one of the broadcast users indicates that channel quality needs to be improved. If none of the broadcast users indicates that channel quality needs to be improved, the base station adapts the transmission parameters to decrease channel quality for the broadcast users. The transmission parameters may be adapted by techniques such as changing the broadcast transmit power, changing the level of FEC encoding and modulation, changing the number of channel resources allocated, or changing the transmission data rate for the broadcast service. When multiple base stations transmit the broadcast information, a base station controller may minimize network resource utilization by coordinating adaptation control among the base stations.

公开(公告)号：US20060007990A1

公开(公告)日：2006-01-12

申请号：US11219626

申请日：2005-09-02

申请人： Carmela Cozzo ,  Douglas Cairns ,  Gregory Bottomley ,  Ali Khayrallah ,  Hakan Eriksson

发明人： Carmela Cozzo ,  Douglas Cairns ,  Gregory Bottomley ,  Ali Khayrallah ,  Hakan Eriksson

IPC分类号： H04B1/69

CPC分类号： H04B1/7103 ,  H04B1/712 ,  H04B2201/709727 ,  H04L25/0212 ,  H04L25/0222 ,  H04L25/0228

摘要： A wireless communication receiver, such as the receiver included in a wireless communication transceiver implemented in a base station or in a mobile station of a wireless communication network, includes a parametric G-RAKE receiver circuit and a method that compute parametric scaling parameters on a per transmission interval basis. In one embodiment, measured impairment correlations are obtained for an individual transmission slot and used to estimate instantaneous values of the scaling parameters. One or both of those instantaneous values are then constrained according to one or more defined limits. In other embodiments, multiple transmission slots are used to increase the number of measurements available to estimate the scaling parameters, with parameter constraining optionally applied. Further embodiments use iterative methods and/or solve for one parameter, and use the results to obtain the other parameter(s). One or more of these embodiments can be improved through the use of error correction/detection information.

摘要翻译： 无线通信接收机，例如包括在基站或无线通信网络的移动台中的无线通信收发器中的接收机，包括参数化的G-RAKE接收机电路和一个在每个接收机上计算参数缩放参数的方法 传输间隔的基础。 在一个实施例中，针对单个传输时隙获得测量的损害相关性，并用于估计缩放参数的瞬时值。 然后根据一个或多个限定的限制来限制那些瞬时值中的一个或两个。 在其他实施例中，使用多个传输时隙来增加可用于估计缩放参数的测量数量，并且可选地应用参数约束。 另外的实施例使用迭代方法和/或解决一个参数，并且使用结果来获得其他参数。 可以通过使用错误校正/检测信息来改进这些实施例中的一个或多个。

公开(公告)号：US20050282500A1

公开(公告)日：2005-12-22

申请号：US10869527

申请日：2004-06-16

申请人： Yi-Pin Wang ,  Gregory Bottomley ,  Rajaram Ramesh

发明人： Yi-Pin Wang ,  Gregory Bottomley ,  Rajaram Ramesh

IPC分类号： H04B7/005 ,  H04L1/00 ,  H04L1/20 ,  H04Q7/20

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。

公开(公告)号：US20050111528A1

公开(公告)日：2005-05-26

申请号：US10720492

申请日：2003-11-24

申请人： Tracy Fulghum ,  Gregory Bottomley ,  Yi-Pin Wang ,  Ali Khayrallah

发明人： Tracy Fulghum ,  Gregory Bottomley ,  Yi-Pin Wang ,  Ali Khayrallah

IPC分类号： H04J13/00 ,  H04B1/69

CPC分类号： H04B1/7107 ,  H04B1/712 ,  H04B2201/709727 ,  H04J13/0048

摘要： Interference, such as inter-symbol interference, from a symbol of interest in a RAKE receiver is reduced. The RAKE receiver comprises a plurality of RAKE fingers, a processor, and a combiner. The plurality of RAKE fingers despread symbols received over multiple paths of a multi-path channel. The processor determines cross-correlations between symbol waveforms from different symbols and multiple paths. The combiner combines the despread symbols using the cross-correlations to reduce interference from the symbol of interest.

摘要翻译： 来自RAKE接收机中感兴趣的符号的干扰，诸如符号间干扰，减少了。 RAKE接收机包括多个RAKE指，处理器和组合器。 多个RAKE手指解扩在多路径信道的多个路径上接收的符号。 处理器确定来自不同符号和多个路径的符号波形之间的互相关。 组合器使用互相关组合解扩符号，以减少来自感兴趣符号的干扰。

公开(公告)号：US20050078742A1

公开(公告)日：2005-04-14

申请号：US10959923

申请日：2004-10-06

申请人： Douglas Cairns ,  Ali Khayrallah ,  Gregory Bottomley

发明人： Douglas Cairns ,  Ali Khayrallah ,  Gregory Bottomley

IPC分类号： H04B1/707

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。