公开(公告)号：US20100061437A1

公开(公告)日：2010-03-11

申请号：US12348565

申请日：2009-01-05

Applicant: Hemant Samdani ,  Kunal Raheja ,  Rahul Garg ,  Amitkumar Mahadevan ,  Patrick Duvaut

Inventor： Hemant Samdani ,  Kunal Raheja ,  Rahul Garg ,  Amitkumar Mahadevan ,  Patrick Duvaut

IPC: H04B17/00

CPC classification number: H04B3/46

Abstract: Impulse noise from nearby or intense electrical sources can disrupt communications over digital subscriber lines (DSL). The characterization of the nature, timing and length of impulse noise sources present on a DSL loop is a critical first step in mitigating the effect of impulse noise on DSL communications. DSL standards provide histograms for impulse length and inter-arrival time of impulses. These histograms can be used to derive the nature, maximum frequency and other statistics related to impulse noise on a DSL line.

Abstract translation: 来自附近或强电场的脉冲噪声可能会扰乱通过数字用户线路（DSL）的通信。 存在于DSL环路上的脉冲噪声源的性质，时间和长度的表征是减轻脉冲噪声对DSL通信的影响的关键的第一步。 DSL标准提供脉冲长度和脉冲到达间隔时间的直方图。 这些直方图可用于导出与DSL线路上的脉冲噪声有关的性质，最大频率和其他统计。

公开(公告)号：US07978756B2

公开(公告)日：2011-07-12

申请号：US12098696

申请日：2008-04-07

Applicant: Hemant Samdani ,  Kunal Raheja ,  Rahul Garg ,  Patrick Duvaut ,  Amitkumar Mahadevan ,  Robert A. Day ,  Robin Levonas

Inventor： Hemant Samdani ,  Kunal Raheja ,  Rahul Garg ,  Patrick Duvaut ,  Amitkumar Mahadevan ,  Robert A. Day ,  Robin Levonas

IPC: H04B3/46 ,  H04B17/00 ,  H04Q1/20

CPC classification number: H04L27/2647 ,  H04B3/487

Abstract: Systems and methods for monitoring impulse noise are described. At least one embodiment is a method, which comprises detecting whether impulse noise is present and in response to detecting the presence of impulse noise, performing time domain analysis to determine whether one or more impulse noise sources are present based on minimum interarrival time and maximum impulse length. The method further includes performing frequency domain analysis to estimate frequencies associated with the one or more impulse noise sources and based on the time domain analysis and frequency domain analysis, providing a total number of impulse noise sources and frequencies associated with the impulse noise sources. In this regard, the embodiments described herein provide dual-speed monitoring of impulse noise in the form of short-term and long-term monitoring. The use of dual-speed monitoring ensures that dynamic changes in the impulse noise environment are quickly addressed and also ensures better characterization of multiple impulse noise sources in order to provide better impulse noise protection.

Abstract translation: 描述了用于监视脉冲噪声的系统和方法。 至少一个实施例是一种方法，其包括检测是否存在脉冲噪声并且响应于检测到脉冲噪声的存在，执行时域分析以基于最小间隔时间和最大脉冲来确定是否存在一个或多个脉冲噪声源 长度。 该方法还包括执行频域分析以估计与一个或多个脉冲噪声源相关联的频率，并且基于时域分析和频域分析，提供脉冲噪声源和与脉冲噪声源相关联的频率的总数。 在这方面，本文描述的实施例以短期和长期监视的形式提供脉冲噪声的双速度监测。 使用双速度监测可确保脉冲噪声环境中的动态变化得到快速解决，并确保更好地表征多个脉冲噪声源，以提供更好的脉冲噪声保护。

公开(公告)号：US20090252234A1

公开(公告)日：2009-10-08

申请号：US12098696

申请日：2008-04-07

Applicant: Hemant Samdani ,  Kunal Raheja ,  Rahul Garg ,  Patrick Duvaut ,  Amitkumar Mahadevan ,  Robert A. Day ,  Robin Levonas

Inventor： Hemant Samdani ,  Kunal Raheja ,  Rahul Garg ,  Patrick Duvaut ,  Amitkumar Mahadevan ,  Robert A. Day ,  Robin Levonas

IPC: H04B1/10

CPC classification number: H04L27/2647 ,  H04B3/487

Abstract: Systems and methods for monitoring impulse noise are described. At least one embodiment is a method, which comprises detecting whether impulse noise is present and in response to detecting the presence of impulse noise, performing time domain analysis to determine whether one or more impulse noise sources are present based on minimum interarrival time and maximum impulse length. The method further includes performing frequency domain analysis to estimate frequencies associated with the one or more impulse noise sources and based on the time domain analysis and frequency domain analysis, providing a total number of impulse noise sources and frequencies associated with the impulse noise sources. In this regard, the embodiments described herein provide dual-speed monitoring of impulse noise in the form of short-term and long-term monitoring. The use of dual-speed monitoring ensures that dynamic changes in the impulse noise environment are quickly addressed and also ensures better characterization of multiple impulse noise sources in order to provide better impulse noise protection.

Abstract translation: 描述了用于监视脉冲噪声的系统和方法。 至少一个实施例是一种方法，其包括检测是否存在脉冲噪声并且响应于检测到脉冲噪声的存在，执行时域分析以基于最小间隔时间和最大脉冲来确定是否存在一个或多个脉冲噪声源 长度。 该方法还包括执行频域分析以估计与一个或多个脉冲噪声源相关联的频率，并且基于时域分析和频域分析，提供与脉冲噪声源相关联的脉冲噪声源和频率的总数。 在这方面，本文描述的实施例以短期和长期监视的形式提供脉冲噪声的双速度监测。 使用双速度监测可确保脉冲噪声环境中的动态变化得到快速解决，并确保更好地表征多个脉冲噪声源，以提供更好的脉冲噪声保护。