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1. 发明申请

US20120027139A1 METHOD AND APPARATUS FOR MULTI-STREAM RECEIVED SIGNAL PROCESSING IN A COMMUNICATION RECEIVER 有权
标题翻译：通信接收机中多流接收信号处理的方法与装置
公开(公告)号：US20120027139A1
公开(公告)日：2012-02-02
申请号：US12847068
申请日：2010-07-30
申请人： Ali S. Khayrallah , Stephen Grant
发明人： Ali S. Khayrallah , Stephen Grant
IPC分类号： H04B7/10
CPC分类号： H04L25/03305 , H04L5/0023 , H04L27/38
摘要： The teachings herein provide a method and apparatus for partitioning sets of MIMO streams, for joint processing. In particular, there is an optimum or otherwise best partitioning of a set of MIMO streams into a first subset to be jointly processed and a second subset to be suppressed as interference with respect to that joint processing. Of course, more than one partitioning may be used, e.g., across different joint processing stages and/or at different times, such that all streams of interest are processed. Correspondingly, the present invention provides a method and apparatus for selecting an optimum or otherwise relative “best” subset of MIMO streams for processing together in a joint process, from among a larger set of MIMO streams. The method and apparatus may, for example, be employed in a multi-stage joint processing receiver, where subset selections are performed on a per-stage basis.
摘要翻译：这里的教导提供了用于分割MIMO流集合的方法和装置，用于联合处理。特别地，存在一组MIMO流的最佳或另外最佳分割成待共同处理的第一子集，以及被抑制为相对于该联合处理的干扰的第二子集。当然，可以使用多于一个的划分，例如跨越不同的联合处理阶段和/或在不同的时间，使得处理所有感兴趣的流。相应地，本发明提供了一种用于从更大的MIMO流集合中选择用于在联合进程中一起处理的MIMO流的最佳或其他相对“最佳”子集的方法和装置。该方法和装置可以例如在多级联合处理接收机中采用，其中子集选择是在每个阶段进行的。

2. 发明授权

US08654875B2 Method and apparatus for multi-stream received signal processing in a communication receiver 有权
标题翻译：在通信接收机中用于多流接收信号处理的方法和装置
公开(公告)号：US08654875B2
公开(公告)日：2014-02-18
申请号：US12847068
申请日：2010-07-30
申请人： Ali S. Khayrallah , Stephen Grant
发明人： Ali S. Khayrallah , Stephen Grant
IPC分类号： H04L1/02
CPC分类号： H04L25/03305 , H04L5/0023 , H04L27/38
摘要： The teachings herein provide a method and apparatus for partitioning sets of MIMO streams, for joint processing. In particular, there is an optimum or otherwise best partitioning of a set of MIMO streams into a first subset to be jointly processed and a second subset to be suppressed as interference with respect to that joint processing. Of course, more than one partitioning may be used, e.g., across different joint processing stages and/or at different times, such that all streams of interest are processed. Correspondingly, the present invention provides a method and apparatus for selecting an optimum or otherwise relative “best” subset of MIMO streams for processing together in a joint process, from among a larger set of MIMO streams. The method and apparatus may, for example, be employed in a multi-stage joint processing receiver, where subset selections are performed on a per-stage basis.
摘要翻译：这里的教导提供了用于分割MIMO流集合的方法和装置，用于联合处理。特别地，存在一组MIMO流的最佳或另外最佳分割成待共同处理的第一子集，以及被抑制为相对于该联合处理的干扰的第二子集。当然，可以使用多于一个的划分，例如跨越不同的联合处理阶段和/或在不同的时间，使得处理所有感兴趣的流。相应地，本发明提供了一种用于从更大的MIMO流集合中选择用于在联合进程中一起处理的MIMO流的最佳或其他相对“最佳”子集的方法和装置。该方法和装置可以例如在多级联合处理接收机中采用，其中子集选择是在每个阶段进行的。

3. 发明申请

US20130237212A1 PRECODING WITH PARTIALLY STALE FEEDBACK 有权
标题翻译：预定部分反应
公开(公告)号：US20130237212A1
公开(公告)日：2013-09-12
申请号：US13414932
申请日：2012-03-08
申请人： Ali S. Khayrallah , Yi-Pin Eric Wang
发明人： Ali S. Khayrallah , Yi-Pin Eric Wang
IPC分类号： H04W72/04 , H04W24/00
CPC分类号： H04B7/0626 , H04B7/022 , H04B7/0434 , H04B7/0452 , H04B7/0663 , H04B17/373 , H04L1/0019 , H04L25/03898 , H04L25/03949
摘要： A system and method in which a base station treats the Channel State Information (CSI) from wireless terminals as only partially-stale, and exploits this partially-stale CSI to predict the current channel from old estimates of the channel. The predicted channel is then used to design a precoder. The base station shapes the transmitted signal with the precoder so as to match it as closely as possible to the current channel. Particular embodiments thus combine the benefits of the stale feedback scheme with precoding to match the channel. Consequently, the signal received at a terminal is better conditioned, thereby providing a greater overall boost in performance of the communication arrangement between the base station and the terminal. The usage of partially-stale CSI can be important for dense networks with a large number of simple terminals.
摘要翻译：一种基站将无线终端的信道状态信息（CSI）仅处于部分状态的系统和方法，并利用该部分陈旧的CSI来预测来自信道的旧估计的当前信道。然后预测的通道用于设计预编码器。基站用预编码器对发射信号进行整形，使其尽可能接近当前信道。因此，特定的实施例将陈旧反馈方案的优点与预编码相结合以匹配信道。因此，在终端处接收的信号被更好地调节，从而对基站和终端之间的通信装置的性能提供更大的整体提升。部分陈旧的CSI的使用对于具有大量简单终端的密集网络来说可能是重要的。

4. 发明授权

US08279981B2 Method for post detection improvement in MIMO 有权
标题翻译： MIMO中后检测改进方法
公开(公告)号：US08279981B2
公开(公告)日：2012-10-02
申请号：US12604570
申请日：2009-10-23
申请人： Ali S. Khayrallah
发明人： Ali S. Khayrallah
IPC分类号： H04L27/06
CPC分类号： H04L25/03305 , H04L25/03184 , H04L25/03331 , H04L2025/03426
摘要： A two-stage approach to MIMO detection improves receiver performance in a computationally tractable manner. A whitening joint detector processes a MIMO symbol stream. The whitening joint detector includes a pre-filter operative to suppress a first subset of the received MIMO streams as colored noise. The whitening joint detector further includes a primary joint detector operative to process a second subset of the MIMO streams and to output a preliminary solution obtained by minimizing a whitening joint detection metric. A secondary detector then operates in the vicinity of the primary joint detector preliminary solution. The secondary detector improves the preliminary solution by comparison to a full joint detection metric.
摘要翻译： MIMO检测的两阶段方法以计算容易的方式改善了接收机的性能。美白联合检测器处理MIMO符号流。美白联合检测器包括一个预滤波器，用于将接收的MIMO流的第一子集抑制为有色噪声。美白联合检测器还包括主接头检测器，其操作以处理MIMO流的第二子集，并输出通过使美白关节检测度量最小化获得的初步解。次级检测器然后在主接头检测器初步解决方案附近操作。二次检测器通过与全关节检测度量相比较来改善初步解决方案。

5. 发明授权

US08229040B2 Feedforward receiver and method for reducing inter-symbol interference by using joint soft values 有权
标题翻译：前馈接收机和使用关节软值减少符号间干扰的方法
公开(公告)号：US08229040B2
公开(公告)日：2012-07-24
申请号：US12342470
申请日：2008-12-23
申请人： Ali S. Khayrallah
发明人： Ali S. Khayrallah
IPC分类号： H04L27/06
CPC分类号： H04L25/03286 , H04L1/0048 , H04L1/005 , H04L25/03318
摘要： A feedforward receiver and method are described herein that address inter-symbol interference in received symbols by using an enhanced equalizer to generate joint soft values (joint information of a previous modem bit x′ and a modem bit x) and an enhanced decoder which uses the joint soft values and side information (bias about the previous modem bit x′) to output a more reliable information bit x.
摘要翻译：本文描述了一种前馈接收器和方法，其通过使用增强均衡器来产生联合软值（先前的调制解调器位x'和调制解调器位x的联合信息）以及增强解码器来解决接收到的符号中的符号间干扰，联合软值和侧信息（关于先前的调制解调器位x'的偏置）以输出更可靠的信息位x。

6. 发明申请

US20120177147A1 METHODS OF RECEIVING MULTIPLE CARRIERS USING DIFFERENT RF MIXER FREQUENCIES AND RELATED COMMUNICATIONS DEVICES AND RECEIVERS 有权
标题翻译：使用不同射频混频器频率接收多个载波的方法和相关通信设备和接收机
公开(公告)号：US20120177147A1
公开(公告)日：2012-07-12
申请号：US12987841
申请日：2011-01-10
申请人： Chester Park , Lars Sundström , Ali S. Khayrallah
发明人： Chester Park , Lars Sundström , Ali S. Khayrallah
IPC分类号： H04L27/00
CPC分类号： H04B1/0082 , H04L5/001 , H04L27/2647
摘要： Methods may be provided to simultaneously receive first and second RF (radio frequency) carriers over respective first and second RF carrier frequencies. More particularly, the first and second RF carriers may be provided at an RF mixer stage. During a first time period, the first and second RF carriers may be down converted through the RF mixer stage using a first RF mixer frequency to generate first downconverted signals, and the first downconverted signals may be processed to provide first and second DC carriers corresponding to the first and second RF earners. During a second time period, the first and second RF carriers may be downconverted through the RF mixer stage using a second RF mixer frequency to generate second downconverted signals with the first and second RF mixer frequencies being different, and the second downconverted signals may be processed to provide the first and second DC carriers corresponding to the first and second RF carriers. Related devices are also discussed.
摘要翻译：可以提供方法以在相应的第一和第二RF载波频率上同时接收第一和第二RF（射频）载波。更具体地，第一和第二RF载波可以设置在RF混频器级。在第一时间段期间，第一和第二RF载波可以使用第一RF混频器频率通过RF混频器级下变频以产生第一下变频信号，并且可以处理第一下变频信号以提供对应于第一和第二RF载波。在第二时间段期间，第一和第二RF载波可以通过RF混频器级使用第二RF混频器频率进行下变频，以产生具有第一和第二RF混频器频率不同的第二下变频信号，并且可以处理第二下变频信号以提供对应于第一和第二RF载波的第一和第二DC载波。还讨论了相关设备。

7. 发明申请

US20110255638A1 CHANNEL ESTIMATION FOR EQUALIZER USING SERIAL LOCALIZATION WITH INDECISION 有权
标题翻译：使用串行本地化的均衡器的通道估计
公开(公告)号：US20110255638A1
公开(公告)日：2011-10-20
申请号：US12760839
申请日：2010-04-15
申请人： Ali S. Khayrallah , Chester Park , Yi-Pin Eric Wang
发明人： Ali S. Khayrallah , Chester Park , Yi-Pin Eric Wang
IPC分类号： H04L27/00
CPC分类号： H04L27/38 , H04L25/0242 , H04L25/03229 , H04L27/3416 , H04L2025/03388 , H04L2025/03414
摘要： In a receiver with a multi-stage equalizer, such as an SLI equalizer, cumulative symbol estimates generated in one or more early stages of the equalizer are used as effective pilot symbols to improve channel estimation for later stages.
摘要翻译：在具有多级均衡器（诸如SLI均衡器）的接收机中，在均衡器的一个或多个早期阶段中生成的累积符号估计值被用作有效的导频符号，以改进稍后阶段的信道估计。

8. 发明授权

US07929593B2 Method and apparatus for successive interference subtraction with covariance root processing 有权
标题翻译：用协方差根加工进行连续干扰减法的方法和装置
公开(公告)号：US07929593B2
公开(公告)日：2011-04-19
申请号：US12103145
申请日：2008-04-15
申请人： Ali S. Khayrallah , Carmela Cozzo , Tracy L. Fulghum
发明人： Ali S. Khayrallah , Carmela Cozzo , Tracy L. Fulghum
IPC分类号： H04L27/30
CPC分类号： H04B1/7105 , H04B1/71072 , H04B1/712 , H04B2201/709727
摘要： Methods and apparatus for processing a composite communication signal comprising two or more received signals of interest are disclosed. An interference-suppressing receiver, which may comprise a G-Rake receiver or a linear chip equalizer, utilizes a square-root covariance matrix in processing received signals, where the square-root covariance matrix represents impairment covariance or data covariance for the composite communication signal. In an exemplary method, a receiver detects symbols, corresponding to a signal of interest, from the composite communication signal, using processing weights calculated from a square-root covariance matrix and a net channel response for the signal of interest. The method further comprises calculating a reconstructed version of the signal of interest from the detected first symbols, generating an updated communication signal by subtracting the reconstructed version of the first signal of interest from the composite communication signal, and updating the square-root covariance matrix to obtain an updated square-root covariance matrix.
摘要翻译：公开了用于处理包括两个或更多个所关注的信号的复合通信信号的方法和装置。可以包括G-Rake接收机或线性码片均衡器的干扰抑制接收机在处理接收信号中使用平方根协方差矩阵，其中平方根协方差矩阵表示复合通信信号的损害协方差或数据协方差。在一种示例性方法中，接收机使用从平方根协方差矩阵计算的处理权重和感兴趣信号的净信道响应，从复合通信信号中检测与感兴趣信号相对应的符号。该方法还包括从检测到的第一符号计算感兴趣信号的重构版本，通过从复合通信信号中减去感兴趣的第一信号的重构版本，并将平方根协方差矩阵更新为获得更新的平方根协方差矩阵。

9. 发明申请

US20110002365A1 INTERFERENCE CANCELLATION IN A MULTI-USER RECEIVER 有权
标题翻译：多用户接收器中的干扰消除
公开(公告)号：US20110002365A1
公开(公告)日：2011-01-06
申请号：US12495954
申请日：2009-07-01
申请人： Ali S. Khayrallah , Hakan Bjorkegren
发明人： Ali S. Khayrallah , Hakan Bjorkegren
IPC分类号： H04B1/10 , H04B1/707
CPC分类号： H04B1/71072 , H04B2201/70714
摘要： The delay associated with performing interference cancellation in a multi-user receiver is reduced by enabling partial decoding. According to an embodiment, interference is canceled from a received signal having signal contributions from multiple users by partially decoding a first codeword obtained from the received signal and transmitted by a first user via a first signal. The first signal is reconstructed based on the partial decoding of the first codeword and canceled from the received signal to yield a reduced-interference signal. A second codeword obtained from the reduced-interference signal and transmitted by the first user or a second user via a second signal is at least partially decoded. In one embodiment, the first codeword is partially decoded by puncturing one or more coded bits of the first codeword and decoding the first codeword based on the one or more punctured coded bits and estimates of the remaining coded bits.
摘要翻译：通过启用部分解码来减少与多用户接收机中的干扰消除相关联的延迟。根据一个实施例，通过部分地解码从接收到的信号获得的并由第一用户经由第一信号发送的第一码字，从具有来自多个用户的信号贡献的接收信号中消除干扰。基于第一码字的部分解码并从接收信号中消除第一信号以产生减小干扰信号。从所述减小干扰信号获得并经由所述第一用户或第二用户经由第二信号发送的第二码字被至少部分解码。在一个实施例中，通过对第一码字的一个或多个编码比特进行删截并基于一个或多个穿孔编码比特和剩余编码比特的估计来对第一码字进行解码来对第一码字进行部分解码。

10. 发明申请

US20100226416A1 Compensating Pre-Filter for an OFDM Transmitter 有权
标题翻译：补偿OFDM发射机的前置滤波器
公开(公告)号：US20100226416A1
公开(公告)日：2010-09-09
申请号：US12562225
申请日：2009-09-18
申请人： Paul Wilkinson Dent , Ali S. Khayrallah
发明人： Paul Wilkinson Dent , Ali S. Khayrallah
IPC分类号： H04B1/38 , H04L25/03 , H04L27/28
CPC分类号： H04L27/2626 , H04L25/0202 , H04L25/0242 , H04L27/2634 , H04L27/2647
摘要： A method and apparatus for reducing group delay and/or amplitude errors applied to a transmission signal by one or more transmission filters is described herein. The present invention characterizes the errors introduced by one or more transmission filters relative to a desired frequency response, e.g., the group delay and/or amplitude errors relative to a flat group delay and flat amplitude, respectively. Based on the errors, the present invention pre-compensates the digital frequency domain samples used to generate the transmission signal. In so doing, the present invention reduces the errors in the filtered transmission signal without placing limits on the design of the transmission filters.
摘要翻译：这里描述了用于减少由一个或多个传输滤波器施加到传输信号的组延迟和/或幅度误差的方法和装置。本发明描述了一个或多个传输滤波器相对于期望的频率响应引入的误差，例如相对于平坦组延迟和平坦幅度的组延迟和/或振幅误差。基于该误差，本发明对用于产生发送信号的数字频域采样进行预补偿。这样做，本发明可以减小滤波后的发送信号的误差，而不会限制发送滤波器的设计。

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