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41. 发明申请

US20080049855A1 Systems and Methods for MIMO Precoding in an xDSL System 有权
标题翻译： xDSL系统中MIMO预编码的系统和方法
公开(公告)号：US20080049855A1
公开(公告)日：2008-02-28
申请号：US11845040
申请日：2007-08-25
申请人： Patrick Duvaut , Amitkumar Mahadevan , Massimo Sorbara , Ehud Langberg
发明人： Patrick Duvaut , Amitkumar Mahadevan , Massimo Sorbara , Ehud Langberg
IPC分类号： H04L27/28
CPC分类号： H04B3/32 , H04L1/0042
摘要： Systems and methods for off-diagonal MIMO precoders are described. At least one embodiment includes a method for precoding data for transmission in a discrete multi-tone (DMT) xDSL system to cancel self-induced far end crosstalk (self-FEXT) comprising: learning characteristics associated with a plurality of N users within the xDSL system to determine an initial off-diagonal multiple input multiple output (MIMO) precoder (ODMP) for a given tone frequency; and converging towards an optimum ODMP from the initial ODMP in order to cancel downstream self-FEXT for the plurality of N users, wherein the ODMP is represented as a zero diagonal matrix with only off-diagonal terms, and wherein the converging towards the optimum ODMP comprises: maximizing the channel capacity for the plurality of N users for the given tone frequency; and minimizing an increase in transmit power of the xDSL system relative to an original transmit power where a precoder is not active.
摘要翻译：描述了非对角MIMO预编码器的系统和方法。至少一个实施例包括用于预编码用于在离散多音（DMT）xDSL系统中传输的数据以消除自感应远端串扰（self-FEXT）的方法，包括：与xDSL内的多个N个用户相关联的学习特征系统确定用于给定音频的初始非对角多输入多输出（MIMO）预编码器（ODMP）; 并从最初的ODMP收敛到最佳的ODMP，以消除多个N个用户的下游自身FEXT，其中ODMP被表示为只有非对角项的零对角矩阵，并且其中朝向最佳ODMP 包括：使给定音调频率的多个N个用户的信道容量最大化; 并且最小化xDSL系统相对于预编码器不活动的原始发射功率的发射功率的增加。

42. 发明申请

US20070157065A1 Self-Protection Against Non-Stationary Disturbances 有权
标题翻译：对非固定干扰的自我保护
公开(公告)号：US20070157065A1
公开(公告)日：2007-07-05
申请号：US11615535
申请日：2006-12-22
申请人： Julien Pons , Amitkumar Mahadevan , Patrick Duvaut
发明人： Julien Pons , Amitkumar Mahadevan , Patrick Duvaut
IPC分类号： H03M13/00 , G06F11/00
CPC分类号： H03M13/2732 , H03M13/1102 , H03M13/2957 , H03M13/31 , H03M13/6362 , H04L1/0066 , H04L1/0068 , H04L1/0071 , H04L27/2601
摘要： Included are embodiments for self protection. At least one embodiment includes Self-protection Unit for protecting a signal that includes a first receiving component configured to receive data, the received data being received as at least one frame and a subframing component configured to subframe at least a portion of the received data, wherein subframing includes converting the at least one into a plurality of subframes. Some embodiments include a subframe interleaver component configured to interleave at least a portion of the subframes.
摘要翻译：包括自我保护的实施例。至少一个实施例包括用于保护包括被配置为接收数据的第一接收组件的信号的自保护单元，被接收为至少一个帧的接收数据和被配置为子帧接收到的数据的至少一部分的子帧组件，其中子帧包括将所述至少一个转换成多个子帧。一些实施例包括被配置为交织子帧的至少一部分的子帧交织器组件。

43. 发明申请

US20110058468A1 Method and apparatus for crosstalk cancellation during SELT testing 有权
标题翻译： SELT测试期间串扰消除的方法和装置
公开(公告)号：US20110058468A1
公开(公告)日：2011-03-10
申请号：US12807524
申请日：2010-09-08
申请人： Shailendra K. Singh , Amitkumar Mahadevan , Laurent F. Alloin
发明人： Shailendra K. Singh , Amitkumar Mahadevan , Laurent F. Alloin
IPC分类号： H04J1/12
CPC分类号： H04M11/062 , H04B3/32 , H04B3/487 , H04M3/304 , H04M3/306 , H04M3/34 , H04M2203/056
摘要： A system for performing a single ended line test (SELT) of a selected subscriber line within a bundle of in-service subscriber lines each supporting frequency division multiplexed multi-tone modulated XDSL communications. The system comprises: a crosstalk cancellation module and a SELT module. The crosstalk cancellation module is coupled to the subscriber lines and configured to cancel crosstalk between the selected subscriber line under test and the in-service subscriber lines. The SELT module couples to the crosstalk cancellation module and is configured to coordinate SELT testing with the crosstalk cancellation module to cancel crosstalk between the selected subscriber line and the in-service subscriber lines during testing.
摘要翻译：一种用于在支持频分复用多音调调制的XDSL通信的一连串在用用户线路中执行所选用户线路的单端测试（SELT）的系统。该系统包括：串扰消除模块和SELT模块。串扰消除模块耦合到用户线路并且被配置为消除所选择的被测试用户线路与在线用户线路之间的串扰。 SELT模块耦合到串扰消除模块，并配置为与串扰消除模块协调SELT测试，以在测试期间消除所选用户线路和在用用户线路之间的串扰。

44. 发明申请

US20090182536A1 SYSTEM AND METHOD FOR ESTIMATING PROBABILITIES OF EVENTS 有权
标题翻译：用于估计事件可行性的系统和方法
公开(公告)号：US20090182536A1
公开(公告)日：2009-07-16
申请号：US12178355
申请日：2008-07-23
申请人： Joel M. Morris , Ronald Hozloehner , Amitkumar Mahadevan , Curtis R. Menyuk , John W. Zweck
发明人： Joel M. Morris , Ronald Hozloehner , Amitkumar Mahadevan , Curtis R. Menyuk , John W. Zweck
IPC分类号： G06F17/10 , G06F17/18 , H03M13/05 , G06F11/10
CPC分类号： H04L1/203
摘要： A dual adaptive importance-sampling system and method is provided that can estimate the probability of events by combining dual complementary importance-sampling simulations. The present invention exploits the ability to determine an optimal biased pdf using an iterative procedure that requires relatively little a priori knowledge of how to bias. Hence, the present invention is particularly suited for evaluating the BERs and/or WERs of coded communication and storage systems, and is generally applicable to arbitrarily chosen codes. When applied to coded communication and storage systems, the present invention provides a versatile technique for the fast and accurate estimation of BERs and WERs of FEC codes down to values of 10−20 or lower.
摘要翻译：提供了一种双重自适应重要性抽样系统和方法，可以通过组合双重互补重要性抽样模拟来估计事件的概率。本发明利用了使用迭代过程确定最佳偏差pdf的能力，该迭代过程需要相对较少的如何偏向的先验知识。因此，本发明特别适用于评估编码的通信和存储系统的BER和/或WER，并且通常适用于任意选择的代码。当应用于编码通信和存储系统时，本发明提供了一种通用技术，用于将FEC码的BER和WER的快速和准确估计降低到10-20或更低的值。

45. 发明授权

US08767521B2 Method and apparatus for crosstalk cancellation during SELT testing 有权
标题翻译： SELT测试期间串扰消除的方法和装置
公开(公告)号：US08767521B2
公开(公告)日：2014-07-01
申请号：US12807524
申请日：2010-09-08
申请人： Shailendra K. Singh , Amitkumar Mahadevan , Laurent F. Alloin
发明人： Shailendra K. Singh , Amitkumar Mahadevan , Laurent F. Alloin
IPC分类号： H04J1/12
CPC分类号： H04M11/062 , H04B3/32 , H04B3/487 , H04M3/304 , H04M3/306 , H04M3/34 , H04M2203/056
摘要： A system for performing a single ended line test (SELT) of a selected subscriber line within a bundle of in-service subscriber lines each supporting frequency division multiplexed multi-tone modulated XDSL communications. The system comprises: a crosstalk cancellation module and a SELT module. The crosstalk cancellation module is coupled to the subscriber lines and configured to cancel crosstalk between the selected subscriber line under test and the in-service subscriber lines. The SELT module couples to the crosstalk cancellation module and is configured to coordinate SELT testing with the crosstalk cancellation module to cancel crosstalk between the selected subscriber line and the in-service subscriber lines during testing.
摘要翻译：一种用于在支持频分复用多音调调制的XDSL通信的一连串在用用户线路中执行所选用户线路的单端测试（SELT）的系统。该系统包括：串扰消除模块和SELT模块。串扰消除模块耦合到用户线路并且被配置为消除所选择的被测试用户线路与在线用户线路之间的串扰。 SELT模块耦合到串扰消除模块，并配置为与串扰消除模块协调SELT测试，以在测试期间消除所选用户线路和在用用户线路之间的串扰。

46. 发明授权

US08144757B2 System and method for estimating probabilities of events 有权
标题翻译：用于估计事件概率的系统和方法
公开(公告)号：US08144757B2
公开(公告)日：2012-03-27
申请号：US12178355
申请日：2008-07-23
申请人： Joel M. Morris , Ronald Hozloehner , Amitkumar Mahadevan , Curtis R. Menyuk , John W. Zweck
发明人： Joel M. Morris , Ronald Hozloehner , Amitkumar Mahadevan , Curtis R. Menyuk , John W. Zweck
IPC分类号： H04B3/46
CPC分类号： H04L1/203
摘要： A dual adaptive importance-sampling system and method is provided that can estimate the probability of events by combining dual complementary importance-sampling simulations. The present invention exploits the ability to determine an optimal biased pdf using an iterative procedure that requires relatively little a priori knowledge of how to bias. Hence, the present invention is particularly suited for evaluating the BERs and/or WERs of coded communication and storage systems, and is generally applicable to arbitrarily chosen codes. When applied to coded communication and storage systems, the present invention provides a versatile technique for the fast and accurate estimation of BERs and WERs of FEC codes down to values of 10−20 or lower.
摘要翻译：提供了一种双重自适应重要性抽样系统和方法，可以通过组合双重互补重要性抽样模拟来估计事件的概率。本发明利用了使用迭代过程确定最佳偏差pdf的能力，该迭代过程需要相对较少的如何偏向的先验知识。因此，本发明特别适用于评估编码的通信和存储系统的BER和/或WER，并且通常适用于任意选择的代码。当应用于编码通信和存储系统时，本发明提供了一种通用技术，用于将FEC码的BER和WER的快速和准确估计降低到10-20或更低的值。

47. 发明申请

US20110235759A1 Systems and Methods for Implementing a Multi-Sensor Receiver in a DSM3 Environment 有权
标题翻译：在DSM3环境中实现多传感器接收器的系统和方法
公开(公告)号：US20110235759A1
公开(公告)日：2011-09-29
申请号：US13051906
申请日：2011-03-18
申请人： Laurent Pierrugues , Laurent Francis Alloin , Amitkumar Mahadevan
发明人： Laurent Pierrugues , Laurent Francis Alloin , Amitkumar Mahadevan
IPC分类号： H04L25/08
CPC分类号： H04B1/1027 , H04B3/32 , H04L25/03012 , H04L25/03159
摘要： In accordance with one embodiment, a method is implemented in a vectored system for improving a signal-to-noise ratio (SNR) of a far end transmitted signal on a victim line in the system. The method comprises mitigating, by the vectored system, self-induced far-end crosstalk (self-FEXT) on the victim line based on self-FEXT mitigation coefficients and receiving, by a second sensor, information relating to at least one of: self-FEXT of the vectored system, external noise, and the far end transmitted signal. The method further comprises learning, at the second sensor, coefficients relating to self-FEXT coupling into the second sensor and removing self-FEXT from the second sensor based on the learned coefficients. Upon removal of self-FEXT from the second sensor, a linear combiner configured to combine information relating to the victim line and the second line is learned. The method further comprises applying the learned linear combiner and readjusting the self-FEXT mitigation coefficients to remove any residual self-FEXT on the victim line after application of the learned linear combiner.
摘要翻译：根据一个实施例，在矢量系统中实现一种方法，用于改善系统中受害线路上的远端发射信号的信噪比（SNR）。该方法包括通过矢量系统减轻基于自FEXT减轻系数的受害线上的自身诱发的远端串扰（self-FEXT），并且由第二传感器接收与以下至少一个相关的信息：自身 -OFXT的矢量系统，外部噪声和远端传输信号。该方法还包括在第二传感器处学习与第二传感器的自FEXT耦合有关的系数，并且基于所学习的系数从第二传感器中去除自FEXT。在从第二传感器移除自身FEXT时，学习用于组合与受害线和第二线有关的信息的线性组合器。该方法还包括应用所学习的线性组合器，并且在应用所学习的线性组合器之后重新调整自FEXT缓解系数以去除所述受害线上的任何剩余自FEXT。

48. 发明申请

US20100220823A1 Systems and Methods for Mitigating Self-Induced Far-End Crosstalk 有权
标题翻译：减轻自感远端串扰的系统和方法
公开(公告)号：US20100220823A1
公开(公告)日：2010-09-02
申请号：US12713482
申请日：2010-02-26
申请人： Pravesh Biyani , Laurent Francis Alloin , Shankar Prakriya , Surendra Prasad , Amitkumar Mahadevan
发明人： Pravesh Biyani , Laurent Francis Alloin , Shankar Prakriya , Surendra Prasad , Amitkumar Mahadevan
IPC分类号： H04B1/10
CPC分类号： H04B3/32 , H04J1/12 , H04L2025/03414 , H04L2025/03426
摘要： Systems and methods for partial self-FEXT (far-end crosstalk) are described. One method, among others, comprises determining one or more instantaneous characteristics of an input signal, wherein the one or more instantaneous characteristics comprise one or more of amplitude of the input signal and an energy level of the input signal. The method further comprises selecting one or more disturbers to cancel according to the one or more instantaneous characteristics, wherein selecting one or more disturbers is performed on a per-DMT (discrete multi-tone) symbol basis.
摘要翻译：描述了部分自FEXT（远端串扰）的系统和方法。一种方法包括确定输入信号的一个或多个瞬时特性，其中一个或多个瞬时特性包括输入信号的幅度和输入信号的能级中的一个或多个。该方法还包括根据一个或多个瞬时特性选择一个或多个干扰器来取消，其中，对每个DMT（离散多音调）符号进行选择一个或多个干扰器。

49. 发明申请

US20060193400A1 System and method for estimating probabilities of events 审中-公开
标题翻译：用于估计事件概率的系统和方法
公开(公告)号：US20060193400A1
公开(公告)日：2006-08-31
申请号：US10890134
申请日：2004-07-14
申请人： Joel Morris , Ronald Holzloehner , Amitkumar Mahadevan , Curtis Menyuk , John Zweck
发明人： Joel Morris , Ronald Holzloehner , Amitkumar Mahadevan , Curtis Menyuk , John Zweck
IPC分类号： H04L27/06
CPC分类号： H04L1/203
摘要： A dual adaptive importance-sampling system and method is provided that can estimate the probability of events by combining dual complementary importance-sampling simulations. The present invention exploits the ability to determine an optimal biased pdf using an iterative procedure that requires relatively little a priori knowledge of how to bias. Hence, the present invention is particularly suited for evaluating the BERs and/or WERs of coded communication and storage systems, and is generally applicable to arbitrarily chosen codes. When applied to coded communication and storage systems, the present invention provides a versatile technique for the fast and accurate estimation of BERs and WERs of FEC codes down to values of 10−20 or lower.
摘要翻译：提供了一种双重自适应重要性抽样系统和方法，可以通过组合双重互补重要性抽样模拟来估计事件的概率。本发明利用了使用迭代过程确定最佳偏差pdf的能力，该迭代过程需要相对较少的如何偏向的先验知识。因此，本发明特别适用于评估编码的通信和存储系统的BER和/或WER，并且通常适用于任意选择的代码。当应用于编码通信和存储系统时，本发明提供了一种通用技术，用于将FEC码的BER和WER的快速和准确估计降低到10至20或更低的值。

50. 发明授权

US08576690B2 Systems and methods for implementing a multi-sensor receiver in a DSM3 environment 有权
标题翻译：用于在DSM3环境中实现多传感器接收器的系统和方法
公开(公告)号：US08576690B2
公开(公告)日：2013-11-05
申请号：US13051906
申请日：2011-03-18
申请人： Laurent Pierrugues , Laurent Francis Alloin , Amitkumar Mahadevan
发明人： Laurent Pierrugues , Laurent Francis Alloin , Amitkumar Mahadevan
IPC分类号： H04J1/12
CPC分类号： H04B1/1027 , H04B3/32 , H04L25/03012 , H04L25/03159
摘要： In accordance with one embodiment, a method is implemented in a vectored system for improving a signal-to-noise ratio (SNR) of a far end transmitted signal on a victim line in the system. The method comprises mitigating, by the vectored system, self-induced far-end crosstalk (self-FEXT) on the victim line based on self-FEXT mitigation coefficients and receiving, by a second sensor, information relating to at least one of: self-FEXT of the vectored system, external noise, and the far end transmitted signal. The method further comprises learning, at the second sensor, coefficients relating to self-FEXT coupling into the second sensor and removing self-FEXT from the second sensor based on the learned coefficients. Upon removal of self-FEXT from the second sensor, a linear combiner configured to combine information relating to the victim line and the second line is learned. The method further comprises applying the learned linear combiner and readjusting the self-FEXT mitigation coefficients to remove any residual self-FEXT on the victim line after application of the learned linear combiner.
摘要翻译：根据一个实施例，在矢量系统中实现一种方法，用于改善系统中受害线路上的远端发射信号的信噪比（SNR）。该方法包括通过矢量系统减轻基于自FEXT减轻系数的受害线路上的自身诱发的远端串扰（self-FEXT），并且由第二传感器接收与以下至少一个相关的信息：自身 -OFXT的矢量系统，外部噪声和远端传输信号。该方法还包括在第二传感器处学习与第二传感器的自FEXT耦合有关的系数，并且基于所学习的系数从第二传感器中去除自FEXT。在从第二传感器移除自身FEXT时，学习用于组合与受害线和第二线有关的信息的线性组合器。该方法还包括应用所学习的线性组合器并且重新调整自FEXT缓解系数以在施加学习的线性组合器之后去除受害线上的任何残余自FEXT。

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