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1. 发明申请

US20140016726A1 Method and Apparatus for a Wireless Communication Receiver using Serial Localization with Indecision 有权
标题翻译：无线通信接收机的方法和装置，使用串并口定位
公开(公告)号：US20140016726A1
公开(公告)日：2014-01-16
申请号：US13545630
申请日：2012-07-10
申请人： Ali Khayrallah , Michael Samuel Bebawy
发明人： Ali Khayrallah , Michael Samuel Bebawy
IPC分类号： H04L27/00
CPC分类号： H04L25/03178
摘要： In one aspect, the present disclosure provides an advantageous generalization of a SLIC receiver structure, by allowing multiple solutions to survive at any one or more of the serial stages included in the SLIC receiver. Where any given stage produces multiple solutions, the next stage of the SLIC receiver processes those multiple input solutions to produce multiple output solutions. Consequently, the contemplated SLIC receiver effectively builds a tree structure with as many levels as there are stages in the SLIC receiver. Such operations allow the SLIC receiver to form two or more solution threads spanning the stages, and to make an improved overall demodulation decision for a received symbol vector by selecting the best solution thread. Further, the additional complexity of allowing multiple survivor solutions at one or more SLIC stages is controlled in one or more embodiments, using survivor pruning for example.
摘要翻译：在一个方面，本公开通过允许多个解决方案在SLIC接收机中包括的任何一个或多个串行阶段存活来提供SLIC接收机结构的有利的概括。在任何给定阶段产生多个解决方案的情况下，SLIC接收机的下一阶段处理这些多输入解决方案以产生多种输出解决方案。因此，预期的SLIC接收器有效地建立与SLIC接收机中的阶段一样多的级别的树结构。这样的操作允许SLIC接收器形成跨越阶段的两个或更多个解决线程，并且通过选择最佳解线程来对接收到的符号向量进行改进的总体解调判决。此外，在一个或多个实施例中，使用例如幸存者修剪来控制在一个或多个SLIC阶段允许多个幸存者解决方案的附加复杂性。

2. 发明申请

US20130301686A1 Chip-Level Processing for Joint Demodulation in CDMA Receivers 有权
标题翻译： CDMA接收机联合解调的芯片级处理
公开(公告)号：US20130301686A1
公开(公告)日：2013-11-14
申请号：US13468680
申请日：2012-05-10
申请人： Andres Reial , Stephen Grant , Michael Samuel Bebawy , Yi-Pin Eric Wang
发明人： Andres Reial , Stephen Grant , Michael Samuel Bebawy , Yi-Pin Eric Wang
IPC分类号： H04B1/7105
CPC分类号： H04B1/7105 , H04B1/7097 , H04B1/71052 , H04B1/71057 , H04L25/03331
摘要： A CDMA multi-code joint demodulation solution in which impairment suppression and channel matching operations are performed prior to despreading. Embodiments include a linear front end that performs chip-level suppression of signal components that are not included in a subsequent joint demodulation process. The pre-processing stage also carries out metric preparation and provides a vector decision statistic that is processed by a joint demodulation stage to extract per-code soft values for the symbols of interest in the received signal. Both code-specific and code-averaged versions of the linear processing are disclosed, as are several front-end configurations with equivalent performance, but different complexity trade-offs. These new approaches use a block formulation, requiring a set of input chip samples as an input, and perform all operations as matrix-vector multiplications, which is an approach amenable to efficient DSP or hardware implementation.
摘要翻译：一种CDMA解码解码方案，其中在解扩之前执行损伤抑制和信道匹配操作。实施例包括执行不包括在随后的联合解调处理中的信号分量的芯片级抑制的线性前端。预处理阶段还执行度量准备，并提供由联合解调级处理以提取接收信号中感兴趣符号的每码软值的向量决策统计量。公开了线性处理的代码特定和代码平均版本，以及具有相同性能但是不同复杂性权衡的若干前端配置。这些新方法使用块公式，需要一组输入芯片样本作为输入，并执行所有操作作为矩阵向量乘法，这是一种适合高效DSP或硬件实现的方法。

3. 发明申请

US20130279559A1 Method and Apparatus for Soft Symbol Processing in a Communication Receiver 有权
标题翻译：通信接收机中软符号处理的方法和装置
公开(公告)号：US20130279559A1
公开(公告)日：2013-10-24
申请号：US13454919
申请日：2012-04-24
申请人： Michael Samuel Bebawy , Fredrik Huss , Yi-Pin Eric Wang
发明人： Michael Samuel Bebawy , Fredrik Huss , Yi-Pin Eric Wang
IPC分类号： H04B1/10 , H04L27/01 , H04L27/00
CPC分类号： H04L25/03012 , H04L1/005 , H04L25/03171 , H04L25/0328 , H04L27/38
摘要： In one aspect, the present invention improves Turbo equalization and/or soft interference cancellation processing in communication receivers by providing an efficient and accurate technique to compute the second moment of a received symbol, e.g., an interfering symbol, as a function of the expected bit values of only those bits in the symbol that are magnitude-controlling bits according to a defined modulation constellation. Advantageously, the expected bit values in at least one embodiment are computed using a LUT that maps bit LLRs to corresponding hyperbolic tangent function values. Further, the expected symbol value is computed as a linear function of terms comprising the expected bit values and the soft symbol variance is efficiently computed from the second moment and the expected symbol value squared. This simplified processing reduces receiver complexity, particularly in the context of modulation constellations having non-constant magnitudes, and thus saves power and/or improves design economics.
摘要翻译：在一个方面，本发明通过提供有效和准确的技术来计算接收符号的第二时刻（例如干扰符号）来改善通信接收机中的Turbo均衡和/或软干扰消除处理，作为预期位的函数根据定义的调制星座，只有符号中那些位是幅度控制位的值。有利地，使用将位LLR映射到对应的双曲正切函数值的LUT来计算至少一个实施例中的预期位值。此外，预期符号值被计算为包括预期位值的项的线性函数，并且从第二时刻有效地计算软符号方差，并且预期符号值平方。这种简化的处理降低了接收机的复杂度，特别是在具有非恒定幅度的调制星座的上下文中，从而节省功率和/或提高了设计经济性。

4. 发明授权

US08934581B2 Method and apparatus for soft symbol processing in a communication receiver 有权
标题翻译：通信接收机中用于软符号处理的方法和装置
公开(公告)号：US08934581B2
公开(公告)日：2015-01-13
申请号：US13454919
申请日：2012-04-24
申请人： Michael Samuel Bebawy , Fredrik Huss , Yi-Pin Eric Wang
发明人： Michael Samuel Bebawy , Fredrik Huss , Yi-Pin Eric Wang
IPC分类号： H04L27/06
CPC分类号： H04L25/03012 , H04L1/005 , H04L25/03171 , H04L25/0328 , H04L27/38
摘要： In one aspect, the present invention improves Turbo equalization and/or soft interference cancellation processing in communication receivers by providing an efficient and accurate technique to compute the second moment of a received symbol, e.g., an interfering symbol, as a function of the expected bit values of only those bits in the symbol that are magnitude-controlling bits according to a defined modulation constellation. Advantageously, the expected bit values in at least one embodiment are computed using a LUT that maps bit LLRs to corresponding hyperbolic tangent function values. Further, the expected symbol value is computed as a linear function of terms comprising the expected bit values and the soft symbol variance is efficiently computed from the second moment and the expected symbol value squared. This simplified processing reduces receiver complexity, particularly in the context of modulation constellations having non-constant magnitudes, and thus saves power and/or improves design economics.
摘要翻译：在一个方面，本发明通过提供有效和准确的技术来计算接收符号的第二时刻（例如干扰符号）来改善通信接收机中的Turbo均衡和/或软干扰消除处理，作为预期位的函数根据定义的调制星座，只有符号中那些位是幅度控制位的值。有利地，使用将位LLR映射到对应的双曲正切函数值的LUT来计算至少一个实施例中的预期位值。此外，预期符号值被计算为包括预期位值的项的线性函数，并且从第二时刻有效地计算软符号方差，并且预期符号值平方。这种简化的处理降低了接收机的复杂度，特别是在具有非恒定幅度的调制星座的上下文中，从而节省功率和/或提高了设计经济性。

5. 发明授权

US08787427B2 Chip-level processing for joint demodulation in CDMA receivers 有权
标题翻译：用于CDMA接收机联合解调的芯片级处理
公开(公告)号：US08787427B2
公开(公告)日：2014-07-22
申请号：US13468680
申请日：2012-05-10
申请人： Andres Reial , Stephen Grant , Michael Samuel Bebawy , Yi-Pin Eric Wang
发明人： Andres Reial , Stephen Grant , Michael Samuel Bebawy , Yi-Pin Eric Wang
IPC分类号： H04B1/00
CPC分类号： H04B1/7105 , H04B1/7097 , H04B1/71052 , H04B1/71057 , H04L25/03331
摘要： A CDMA multi-code joint demodulation solution in which impairment suppression and channel matching operations are performed prior to despreading. Embodiments include a linear front end that performs chip-level suppression of signal components that are not included in a subsequent joint demodulation process. The pre-processing stage also carries out metric preparation and provides a vector decision statistic that is processed by a joint demodulation stage to extract per-code soft values for the symbols of interest in the received signal. Both code-specific and code-averaged versions of the linear processing are disclosed, as are several front-end configurations with equivalent performance, but different complexity trade-offs. These new approaches use a block formulation, requiring a set of input chip samples as an input, and perform all operations as matrix-vector multiplications, which is an approach amenable to efficient DSP or hardware implementation.
摘要翻译：一种CDMA解码解码方案，其中在解扩之前执行损伤抑制和信道匹配操作。实施例包括执行不包括在随后的联合解调处理中的信号分量的芯片级抑制的线性前端。预处理阶段还执行度量准备，并提供由联合解调级处理以提取接收信号中感兴趣符号的每码软值的向量决策统计量。公开了线性处理的代码特定和代码平均版本，以及具有相同性能但是不同复杂性权衡的若干前端配置。这些新方法使用块公式，需要一组输入芯片样本作为输入，并执行所有操作作为矩阵向量乘法，这是一种适合高效DSP或硬件实现的方法。

6. 发明授权

US08750432B2 Method and apparatus for a wireless communication receiver using serial localization with indecision 有权
标题翻译：无线通信接收机的方法和装置，其使用具有不确定性的串行定位
公开(公告)号：US08750432B2
公开(公告)日：2014-06-10
申请号：US13545630
申请日：2012-07-10
申请人： Ali Khayrallah , Michael Samuel Bebawy
发明人： Ali Khayrallah , Michael Samuel Bebawy
IPC分类号： H04L27/06
CPC分类号： H04L25/03178
摘要： In one aspect, the present disclosure provides an advantageous generalization of a SLIC receiver structure, by allowing multiple solutions to survive at any one or more of the serial stages included in the SLIC receiver. Where any given stage produces multiple solutions, the next stage of the SLIC receiver processes those multiple input solutions to produce multiple output solutions. Consequently, the contemplated SLIC receiver effectively builds a tree structure with as many levels as there are stages in the SLIC receiver. Such operations allow the SLIC receiver to form two or more solution threads spanning the stages, and to make an improved overall demodulation decision for a received symbol vector by selecting the best solution thread. Further, the additional complexity of allowing multiple survivor solutions at one or more SLIC stages is controlled in one or more embodiments, using survivor pruning for example.
摘要翻译：在一个方面，本公开通过允许多个解决方案在SLIC接收机中包括的任何一个或多个串行阶段存活来提供SLIC接收机结构的有利的概括。在任何给定阶段产生多个解决方案的情况下，SLIC接收机的下一阶段处理这些多输入解决方案以产生多种输出解决方案。因此，预期的SLIC接收器有效地建立与SLIC接收机中的阶段一样多的级别的树结构。这样的操作允许SLIC接收器形成跨越阶段的两个或更多个解决线程，并且通过选择最佳解线程来对接收到的符号向量进行改进的总体解调判决。此外，在一个或多个实施例中，使用例如幸存者修剪来控制在一个或多个SLIC阶段允许多个幸存者解决方案的附加复杂性。

7. 发明授权

US08798119B2 Symbol-level code-specific joint detection for CDMA receivers 有权
标题翻译： CDMA接收机的符号级代码特定联合检测
公开(公告)号：US08798119B2
公开(公告)日：2014-08-05
申请号：US13468694
申请日：2012-05-10
申请人： Stephen Grant , Michael Samuel Bebawy
发明人： Stephen Grant , Michael Samuel Bebawy
IPC分类号： H04B1/00
CPC分类号： H04B1/71052 , H04B1/712
摘要： Techniques are disclosed for processing a received spread spectrum signal containing multiple signals of interest and one or more interfering signals with known spreading codes. An example method begins with the generation of a despread signal vector for each signal of interest, for a given symbol time, using a corresponding group of correlators for each of the signals of interest. The method continues with the calculating of a covariance matrix for the given symbol time, the covariance matrix representing impairment correlations among the correlators from sources other than the signals of interest, as well as from inter-symbol interference in and among the signals of interest. The covariance matrix includes diagonal blocks that each represent impairment correlations among a single one of the groups of correlators; the diagonal blocks are calculated based on first terms that account in a code-specific manner for same-symbol-time interference from each of the interfering signals.
摘要翻译：公开了用于处理包含多个感兴趣信号的接收扩频信号和具有已知扩频码的一个或多个干扰信号的技术。示例性方法开始于对于给定符号时间，对于感兴趣的每个信号，对于感兴趣的每个信号，使用相应的一组相关器，产生针对每个感兴趣信号的解扩信号向量。该方法继续计算给定符号时间的协方差矩阵，协方差矩阵表示来自不同感兴趣信号之外的源的相关器之间的损害相关性，以及来自感兴趣信号之间和之间的符号间干扰。协方差矩阵包括对角线块，其各自表示相关器组中的单个组之间的损伤相关; 基于针对来自每个干扰信号的相同符号时间干扰的代码特定方式的第一项计算对角线块。

8. 发明授权

US08681835B2 Multi-stage turbo equalization and interference cancellation receiver for wireless systems 有权
标题翻译：用于无线系统的多级turbo均衡和干扰消除接收机
公开(公告)号：US08681835B2
公开(公告)日：2014-03-25
申请号：US13402297
申请日：2012-02-22
申请人： Yi-Pin Eric Wang , Stephen Grant , Ning He , Niklas Johansson , Michael Samuel Bebawy
发明人： Yi-Pin Eric Wang , Stephen Grant , Ning He , Niklas Johansson , Michael Samuel Bebawy
IPC分类号： H04B1/00
CPC分类号： H04W72/1278 , H04B1/71075 , H04B1/712 , H04W72/082
摘要： In a receive node of a wireless network, an iterative multi-user multi-stage interference cancellation receiver is used. The receiver performs code-averaged equalization and chip chip-level code-specific interference over-cancellation on the received signals. This can result in a unified interference cancellation processing, and can avoid cumbersome calculations of code cross correlations that is required in symbol-level interference cancellation. A symbol-level code-averaged desired signal add-back is performed to address the over-cancellation of some desired signals.
摘要翻译：在无线网络的接收节点中，使用迭代多用户多级干扰消除接收机。接收机对接收到的信号执行代码平均均衡和芯片级代码特定的干扰过度消除。这可以导致统一的干扰消除处理，并且可以避免在符号级干扰消除中所需的代码互相关的繁琐计算。执行符号级代码平均期望信号加法来解决某些期望信号的过度消除。

9. 发明申请

US20130301687A1 Symbol-Level Code-Specific Joint Detection for CDMA Receivers 有权
标题翻译： CDMA接收机的符号级代码专用联合检测
公开(公告)号：US20130301687A1
公开(公告)日：2013-11-14
申请号：US13468694
申请日：2012-05-10
申请人： Stephen Grant , Michael Samuel Bebawy
发明人： Stephen Grant , Michael Samuel Bebawy
IPC分类号： H04B1/7097 , H04B1/709
CPC分类号： H04B1/71052 , H04B1/712
摘要： Techniques are disclosed for processing a received spread spectrum signal containing multiple signals of interest and one or more interfering signals with known spreading codes. An example method begins with the generation of a despread signal vector for each signal of interest, for a given symbol time, using a corresponding group of correlators for each of the signals of interest. The method continues with the calculating of a covariance matrix for the given symbol time, the covariance matrix representing impairment correlations among the correlators from sources other than the signals of interest, as well as from inter-symbol interference in and among the signals of interest. The covariance matrix includes diagonal blocks that each represent impairment correlations among a single one of the groups of correlators; the diagonal blocks are calculated based on first terms that account in a code-specific manner for same-symbol-time interference from each of the interfering signals.
摘要翻译：公开了用于处理包含多个感兴趣信号的接收扩频信号和具有已知扩频码的一个或多个干扰信号的技术。示例性方法开始于对于给定符号时间，对于感兴趣的每个信号，对于感兴趣的每个信号，使用相应的一组相关器，产生针对每个感兴趣信号的解扩信号向量。该方法继续计算给定符号时间的协方差矩阵，协方差矩阵表示来自不同感兴趣信号之外的源的相关器之间的损害相关性，以及来自感兴趣信号之间和之间的符号间干扰。协方差矩阵包括对角线块，其各自表示相关器组中的单个组之间的损伤相关; 基于针对来自每个干扰信号的相同符号时间干扰的代码特定方式的第一项计算对角线块。

10. 发明申请

US20130077720A1 MULTI-STAGE TURBO EQUALIZATION AND INTERFERENCE CANCELLATION RECEIVER FOR WIRELESS SYSTEMS 有权
标题翻译：无线系统的多级涡轮均衡和干扰消除接收器
公开(公告)号：US20130077720A1
公开(公告)日：2013-03-28
申请号：US13402297
申请日：2012-02-22
申请人： Yi-Pin Eric WANG , Stephen Grant , Ning He , Niklas Johansson , Michael Samuel Bebawy
发明人： Yi-Pin Eric WANG , Stephen Grant , Ning He , Niklas Johansson , Michael Samuel Bebawy
IPC分类号： H04B1/10
CPC分类号： H04W72/1278 , H04B1/71075 , H04B1/712 , H04W72/082
摘要： In a receive node of a wireless network, an iterative multi-user multi-stage interference cancellation receiver is used. The receiver performs code-averaged equalization and chip chip-level code-specific interference over-cancellation on the received signals. This can result in a unified interference cancellation processing, and can avoid cumbersome calculations of code cross correlations that is required in symbol-level interference cancellation. A symbol-level code-averaged desired signal add-back is performed to address the over-cancellation of some desired signals.
摘要翻译：在无线网络的接收节点中，使用迭代多用户多级干扰消除接收机。接收机对接收到的信号执行代码平均均衡和芯片级代码特定的干扰过度消除。这可以导致统一的干扰消除处理，并且可以避免在符号级干扰消除中所需的代码互相关的繁琐计算。执行符号级代码平均期望信号加法来解决某些期望信号的过度消除。

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