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    • 1. 发明授权
    • Systems and methods for deriving parameters for impulse noise detectors
    • 用于推导脉冲噪声检测器参数的系统和方法
    • US07953143B2
    • 2011-05-31
    • US12036035
    • 2008-02-22
    • Amitkumar MahadevanPatrick DuvautJulien D. Pons
    • Amitkumar MahadevanPatrick DuvautJulien D. Pons
    • H04B1/38H04K1/10
    • H04L27/2647
    • 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.
    • 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
    • 2. 发明申请
    • Cognitive and Universal Impulse Noise Protection
    • 认知和通用脉冲噪声保护
    • US20090177938A1
    • 2009-07-09
    • US12348763
    • 2009-01-05
    • Julien D. PonsPatrick DuvautMassimo SorbaraYue-Peng Zheng
    • Julien D. PonsPatrick DuvautMassimo SorbaraYue-Peng Zheng
    • H04L1/18
    • H04L1/1867H04L1/0009H04L1/0019H04L1/0057H04L1/0071H04L1/1812H04L1/20H04L27/2601
    • Impulse noise from nearby or intense electrical sources can disrupt communications over digital subscriber lines. There are many methods to deal with errors produced by impulse noise sources. Forward error correction (FEC) codes such as Reed Solomon coding along with scrambling and interleaving are used to correct small errors. However, for larger errors, retransmission is favored. Retransmission can be applied at the Discrete Multi-tone symbol level thus eliminating the need to insert sequence identification into data transmission units, furthermore retransmission can also be employed to exploit the error correcting capabilities of the FEC codes. Finally, an impulse noise protection system can exploit impulse noise statistics to configure the redundancy in the FEC codes and to enable the use of blanking. Exemplary embodiments of systems described can cooperatively use impulse noise statistics to utilize retransmission, FEC and blanking to mitigate the effects of impulse noise.
    • 来自附近或强电场的脉冲噪声可能会扰乱数字用户线路的通信。 有很多方法来处理由脉冲噪声源产生的误差。 使用诸如Reed Solomon编码的前向纠错(FEC)码以及加扰和交织来校正小错误。 然而,对于较大的错误,重传是有利的。 可以在离散多音符号级别应用重传,从而不需要将序列识别插入到数据传输单元中,此外还可以使用重传来利用FEC码的纠错能力。 最后,脉冲噪声保护系统可以利用脉冲噪声统计来配置FEC码中的冗余,并且能够使用消隐。 所描述的系统的示例性实施例可以协同地使用脉冲噪声统计来利用重传,FEC和消隐来减轻脉冲噪声的影响。
    • 4. 发明申请
    • Cognitive and Universal Impulse Noise Protection
    • 认知和通用脉冲噪声保护
    • US20110264978A1
    • 2011-10-27
    • US13173672
    • 2011-06-30
    • Julien D. PonsPatrick DuvautMassimo SobaraYue-Peng Zheng
    • Julien D. PonsPatrick DuvautMassimo SobaraYue-Peng Zheng
    • H04L1/18G06F11/14
    • H04L1/1867H04L1/0009H04L1/0019H04L1/0057H04L1/0071H04L1/1812H04L1/20H04L27/2601
    • Impulse noise from nearby or intense electrical sources can disrupt communications over digital subscriber lines. There are many methods to deal with errors produced by impulse noise sources. Forward error correction (FEC) codes such as Reed Solomon coding along with scrambling and interleaving are used to correct small errors. However, for larger errors, retransmission is favored. Retransmission can be applied at the Discrete Multi-tone symbol level thus eliminating the need to insert sequence identification into data transmission units, furthermore retransmission can also be employed to exploit the error correcting capabilities of the FEC codes. Finally, an impulse noise protection system can exploit impulse noise statistics to configure the redundancy in the FEC codes and to enable the use of blanking. Exemplary embodiments of systems described can cooperatively use impulse noise statistics to utilize retransmission, FEC and blanking to mitigate the effects of impulse noise.
    • 来自附近或强电场的脉冲噪声可能会扰乱数字用户线路的通信。 有很多方法来处理由脉冲噪声源产生的误差。 使用诸如Reed Solomon编码的前向纠错(FEC)码以及加扰和交织来校正小错误。 然而,对于较大的错误,重传是有利的。 可以在离散多音符号级别应用重传,从而不需要将序列标识插入到数据传输单元中,此外还可以采用重传来利用FEC码的纠错能力。 最后,脉冲噪声保护系统可以利用脉冲噪声统计来配置FEC码中的冗余,并且能够使用消隐。 所描述的系统的示例性实施例可以协同地使用脉冲噪声统计来利用重传,FEC和消隐来减轻脉冲噪声的影响。
    • 6. 发明授权
    • Configurable impulse noise protection system and method based on impulse noise statistics
    • 基于脉冲噪声统计的可配置脉冲噪声保护系统和方法
    • US08261149B2
    • 2012-09-04
    • US13173672
    • 2011-06-30
    • Julien D. PonsPatrick DuvautMassimo SorbaraYue-Peng Zheng
    • Julien D. PonsPatrick DuvautMassimo SorbaraYue-Peng Zheng
    • H04L1/18
    • H04L1/1867H04L1/0009H04L1/0019H04L1/0057H04L1/0071H04L1/1812H04L1/20H04L27/2601
    • Impulse noise from nearby or intense electrical sources can disrupt communications over digital subscriber lines. There are many methods to deal with errors produced by impulse noise sources. Forward error correction (FEC) codes such as Reed Solomon coding along with scrambling and interleaving are used to correct small errors. However, for larger errors, retransmission is favored. Retransmission can be applied at the Discrete Multi-tone symbol level thus eliminating the need to insert sequence identification into data transmission units, furthermore retransmission can also be employed to exploit the error correcting capabilities of the FEC codes. Finally, an impulse noise protection system can exploit impulse noise statistics to configure the redundancy in the FEC codes and to enable the use of blanking. Exemplary embodiments of systems described can cooperatively use impulse noise statistics to utilize retransmission, FEC and blanking to mitigate the effects of impulse noise.
    • 来自附近或强电场的脉冲噪声可能会扰乱数字用户线路的通信。 有很多方法来处理由脉冲噪声源产生的误差。 使用诸如Reed Solomon编码的前向纠错(FEC)码以及加扰和交织来校正小错误。 然而,对于较大的错误,重传是有利的。 可以在离散多音符号级别应用重传,从而不需要将序列标识插入到数据传输单元中,此外还可以采用重传来利用FEC码的纠错能力。 最后,脉冲噪声保护系统可以利用脉冲噪声统计来配置FEC码中的冗余,并且能够使用消隐。 所描述的系统的示例性实施例可以协同地使用脉冲噪声统计来利用重传,FEC和消隐来减轻脉冲噪声的影响。
    • 9. 发明申请
    • SYSTEMS AND METHODS FOR DERIVING PARAMETERS FOR IMPULSE NOISE DETECTORS
    • 用于输入脉冲噪声检测器的参数的系统和方法
    • US20090216489A1
    • 2009-08-27
    • US12036035
    • 2008-02-22
    • Amitkumar MahadevanPatrick DuvautJulien D. Pons
    • Amitkumar MahadevanPatrick DuvautJulien D. Pons
    • G06F17/18H03M13/15
    • H04L27/2647
    • Systems and methods for deriving parameters for frequency domain impulse noise detectors are described. At least one embodiment is a method for deriving a set of parameters associated with a frequency domain impulse noise detector. In accordance with such embodiments, the method comprises setting values for βpivot and βc, wherein 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. The method further comprises selecting a fixed ratio (m/M), wherein M is a number of monitored tones, and wherein m is a number of slicer error samples that must exceed a decision threshold for a symbol to be flagged as corrupted. The method also comprises selecting a plurality of values for M and computing a corresponding value of m based on the fixed ratio (m/M), calculating α based on the values of M, m, and βpivot, wherein α is a tunable scaling factor, and calculating a probability of a miss and a probability of a false alarm based on the values of M, m, βc, and α for each of the plurality of values of M. In accordance with some embodiments, the method further comprises selecting from among the plurality of values for M such that the larger of the probability of a miss and the probability of a false alarm is a predetermined scale factor less than a predetermined bit error rate (BER) at a selected value of βc in order to achieve the predetermined BER.
    • 描述了用于导出频域脉冲噪声检测器参数的系统和方法。 至少一个实施例是用于导出与频域脉冲噪声检测器相关联的一组参数的方法。 根据这样的实施方案,该方法包括设定betapivot和betac的值,其中betapivot和betac是与破坏性噪声的统计参数与标称噪声的统计参数的比率的单调函数相关联的值。 所述方法还包括选择固定比率(m / M),其中M是所监视音调的数量,并且其中m是必须超过要标记为损坏的符号的判定阈值的限幅器误差样本的数量。 该方法还包括选择M的多个值并基于固定比率(m / M)计算m的对应值,基于M,m和betapivot的值计算α,其中α是可调整缩放因子 ,并且基于M的多个值中的每一个的M,m,betac和α的值来计算遗漏的概率和误报率的概率。根据一些实施例,该方法还包括从 在M的多个值中,使得错误的概率和假警报的概率中的较大者是小于所选择的betac值的预定比特误码率(BER)的预定比例因子,以便实现 预定的BER。