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41.发明授权公开(公告)号：US07953143B2
公开(公告)日：2011-05-31
申请号：US12036035
申请日：2008-02-22
CPC分类号： H04L27/2647
摘要： A system is described that comprises a frequency domain impulse noise detector configured to monitor received discrete multi-tone (DMT) symbols for impulse noise, a Reed Solomon (RS) decoder with erasure and erasure correction capability for performing error correction on received DMT symbols, and an optimization module configured to adjust parameters associated with the impulse noise detector, the optimization module configured to adjust values for βpivot, βc, and a ratio (m/M), wherein M is a number of monitored tones, m is a number of slicer error samples that must exceed a decision threshold for a symbol to be flagged as corrupted, and βpivot and βc are values associated with a monotonic function of a ratio of a statistical parameter of disruptive noise to a statistical parameter of nominal noise.
摘要翻译： 描述了一种系统，其包括被配置为监视用于脉冲噪声的接收的离散多音（DMT）符号的频域脉冲噪声检测器，具有用于对所接收的DMT符号执行纠错的擦除和擦除校正能力的里德所罗门（RS）解码器， 以及优化模块，被配置为调整与所述脉冲噪声检测器相关联的参数，所述优化模块被配置为调整所述第一和第二位置的比值（m / M），其中M是监视音调的数量，m 是多个限幅器错误样本，必须超过要标记为损坏的符号的判定阈值，并且＆bgr; pivot和＆bgr; c是与破坏性噪声的统计参数与统计学的比率的单调函数相关联的值 标称噪声参数
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42.发明申请Adaptive Turbo Peak Mitigation for Peak-to-Average Ratio (PAR) Reduction Using Reserved Tones 有权使用保留音调的峰值平均比（PAR）减小的自适应Turbo峰值缓解公开(公告)号：US20090310659A1
公开(公告)日：2009-12-17
申请号：US12139146
申请日：2008-06-13
IPC分类号： H04B1/38
CPC分类号： H04M11/062
摘要： Systems and methods for reducing the peak-to-average ratio (PAR) at the transmitter can reduce the dynamic range required in various analog components. PAR can be reduced by applying a time-domain compensation signal which reduces the magnitude of peaks in the time-domain signal prior to transmission where the time-domain compensation signals use tones that are reserved for the purpose of reducing the PAR. The reservation of these reserved tones for PAR can be implemented by altering the typical startup procedures in a digital subscriber line (xDSL) system. The use of the reserved tones to reduce the PAR can be implemented using a low complexity algorithm or using an adaptive technique.
摘要翻译： 用于降低发射机峰值平均比（PAR）的系统和方法可以减少各种模拟组件所需的动态范围。 可以通过应用时域补偿信号来减小PAR，该时域补偿信号在时域补偿信号使用为了减少PAR的目的而被保留的音调的同时减小时域信号中的峰值的幅度。 可以通过改变数字用户线（xDSL）系统中的典型启动过程来实现用于PAR的这些保留音调的预留。 可以使用低复杂度算法或使用自适应技术来实现使用保留的音调来减少PAR。
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43.发明申请Cooperative MIMO for Alien Noise Cancellation (COMAC) for Upstream VDSL Systems 有权用于上行VDSL系统的外部噪声消除（COMAC）的合作MIMO公开(公告)号：US20090257581A1
公开(公告)日：2009-10-15
申请号：US12100253
申请日：2008-04-09
IPC分类号： H04M1/74
CPC分类号： H04L27/2647 , H04B3/32
摘要： Included are embodiments for reducing alien crosstalk. At least one embodiment of a method includes receiving noise data associated with a first user signal on a first tone, receiving noise data associated with a second user signal on the first tone, and receiving at least one alien crosstalk canceller coefficient for the first user on the first tone. Some embodiments include applying the at least one alien crosstalk canceller coefficient to the second user signal to reduce alien crosstalk for the first user signal.
摘要翻译： 包括减少外来串扰的实施例。 方法的至少一个实施例包括接收与第一音调上的第一用户信号相关联的噪声数据，接收与第一音调上的第二用户信号相关联的噪声数据，以及为第一用户接收至少一个外来串扰消除器系数 第一音 一些实施例包括将至少一个外来串扰消除器系数应用于第二用户信号以减少第一用户信号的外来串扰。
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44.发明申请Systems and Methods for Transmit-Only Peak-to-Average Ratio Reduction in the Oversampled Regime Using Reserved Tones 有权使用保留音调的过采样方案中仅发送峰均比减少的系统和方法公开(公告)号：US20080310296A1
公开(公告)日：2008-12-18
申请号：US12138731
申请日：2008-06-13
CPC分类号： H04L27/2618
摘要： Systems and methods for reducing the peak-to-average power ratio (PAR) at the transmitter can reduce the dynamic range required in various analog components. PAR can be reduced by applying a time-domain compensation signal in the oversampled regime, using tones reserved for PAR reduction. A set of vectors corresponding to PAR tones is generated by processing out-of-phase symbols for each PAR tone to form a span matrix. The span matrix is used to find a best fit of a desired target signal to a time-domain compensation signal comprising only PAR tones.
摘要翻译： 用于降低发射机的峰均功率比（PAR）的系统和方法可以减少各种模拟组件所需的动态范围。 可以通过在过采样方案中应用时域补偿信号，使用保留给PAR减少的音调来减少PAR。 通过处理每个PAR色调的异相符号来生成对应于PAR色调的一组矢量以形成跨度矩阵。 跨度矩阵用于找到期望目标信号对仅包括PAR色调的时域补偿信号的最佳拟合。
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公开(公告)号：US20080049855A1
公开(公告)日：2008-02-28
申请号：US11845040
申请日：2007-08-25
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。
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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
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。
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公开(公告)号：US20110058468A1
公开(公告)日：2011-03-10
申请号：US12807524
申请日：2010-09-08
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。
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公开(公告)号：US20090182536A1
公开(公告)日：2009-07-16
申请号：US12178355
申请日：2008-07-23
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。
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公开(公告)号：US08767521B2
公开(公告)日：2014-07-01
申请号：US12807524
申请日：2010-09-08
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。
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公开(公告)号：US08144757B2
公开(公告)日：2012-03-27
申请号：US12178355
申请日：2008-07-23
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。
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