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    Method and apparatus for reducing noise in a communication system
    5.
    发明授权
    Method and apparatus for reducing noise in a communication system 有权
    用于降低通信系统中的噪声的方法和装置

    公开(公告)号：US08730785B2

    公开(公告)日：2014-05-20

    申请号：US12402339

    申请日：2009-03-11

    申请人： Thomas Starr ,  Peter J. Silverman ,  George Ginis

    发明人： Thomas Starr ,  Peter J. Silverman ,  George Ginis

    IPC分类号： H04J1/12

    CPC分类号： H04B3/32 ,  H04B3/487 ,  H04B7/046

    摘要： A system that incorporates teachings of the present disclosure may include, for example, a controller to: determine crosstalk coupling characteristics between a plurality of lines of a Digital Subscriber Line (DSL) system connected to a plurality of modems based on a transition between a full power mode and one or more other modes, and provide the determined crosstalk coupling characteristics to one or more of the plurality of modems for performance of at least one of pre-coding a transmitted signal and processing a received signal along a line of the plurality of lines, where the pre-coding and processing is performed based at least in part on the determined crosstalk coupling characteristics, and where the pre-coding of the transmitted signal and the processing of the received signal reduce effects of fluctuating crosstalk. Other embodiments are disclosed.

    摘要翻译： 结合本公开的教导的系统可以包括例如控制器，用于：确定连接到多个调制解调器的数字用户线（DSL）系统的多个线路之间的串扰耦合特性，基于完全 功率模式和一个或多个其他模式，并且将所确定的串扰耦合特性提供给所述多个调制解调器中的一个或多个，以执行对所发送的信号的预编码和沿着所述多个调制解调器的一行的处理接收信号中的至少一个 线，其中至少部分地基于确定的串扰耦合特性执行预编码和处理，并且其中发送信号的预编码和接收信号的处理减少波动串扰的影响。 公开了其他实施例。

    METHOD AND APPARATUS FOR ANALYZING AND MITIGATING NOISE IN A DIGITAL SUBSCRIBER LINE
    7.
    发明申请
    METHOD AND APPARATUS FOR ANALYZING AND MITIGATING NOISE IN A DIGITAL SUBSCRIBER LINE 有权
    用于数字用户线分析和消除噪声的方法和装置

    公开(公告)号：US20090323903A1

    公开(公告)日：2009-12-31

    申请号：US12375216

    申请日：2007-07-31

    申请人： John M. Cioffi ,  Wonjong Rhee ,  George Ginis ,  Sumanth Jagannathan

    发明人： John M. Cioffi ,  Wonjong Rhee ,  George Ginis ,  Sumanth Jagannathan

    IPC分类号： H04M3/22

    CPC分类号： H04L1/20 ,  H04B1/1027 ,  H04B3/32 ,  H04L41/0213 ,  H04L43/0823 ,  H04L43/16 ,  H04M3/2209 ,  H04M3/30

    摘要： Data indicative of a level of stability of a DSL link is received. Based on the received data, it is determined whether the data indicates a level of stability of the DSL link that is above or below a minimum threshold. If the level of stability of the DSL link is below the minimum threshold, die noise associated with the DSL link before the time of failure is compared with the noise associated with the DSL link after the time of failure. If the difference between the noise before and after the time of failure exceeds a threshold, then the difference in noise is characterized as a stationary noise associated with the DSL link. However, if the difference between the noise before and after the time of failure is below the threshold, a determination is made whether the failure is associated with a loss of power to the DSL link or a severe impulse noise event—the difference in noise is characterized accordingly. Finally, the characterization of the noise associated with the DSL link is preserved for subsequent possible reconfiguration of the DSL link to improve link stability.

    摘要翻译： 接收到指示DSL链路的稳定性水平的数据。 基于接收到的数据，确定数据是否指示高于或低于最小阈值的DSL链路的稳定性水平。 如果DSL链路的稳定级别低于最小阈值，则在故障发生之前与DSL链路相关联的模块噪声与在故障之后与DSL链路相关联的噪声被比较。 如果故障之前和之后的噪声之间的差异超过阈值，则噪声的差异被表征为与DSL链路相关联的稳定的噪声。 然而，如果故障之前和之后的噪声之间的差异低于阈值，则确定故障是否与DSL链路的功率损耗或严重的脉冲噪声事件相关联 - 噪声的差异是 相应地表征。 最后，保留与DSL链路相关联的噪声的表征，以便随后可能重新配置DSL链路以改善链路稳定性。

    Method and apparatus for time-frequency domain forward error correction for digital communication systems
    8.
    发明授权
    Method and apparatus for time-frequency domain forward error correction for digital communication systems 有权
    用于数字通信系统的时频域前向纠错的方法和装置

    公开(公告)号：US06976202B1

    公开(公告)日：2005-12-13

    申请号：US10095618

    申请日：2002-03-11

    申请人： Behrooz Rezvani ,  George Ginis

    发明人： Behrooz Rezvani ,  George Ginis

    IPC分类号： H03M13/00 ,  H03M13/03 ,  H03M13/29 ,  H04L1/00 ,  H04L27/26

    CPC分类号： H04L1/0057 ,  H03M13/2957 ,  H03M13/3776 ,  H04L1/0042 ,  H04L1/005 ,  H04L1/0066 ,  H04L1/04 ,  H04L5/0007

    摘要： A method and apparatus for time and frequency domain forward error correction (FEC) in a modem which communicates data using multiple discrete sub-channels is provided. The invention may be implemented in hardware, software or firmware. In an embodiment of the invention a modem with a plurality of components forming a transmit path and a receive path is disclosed. The modem communicates data across a wired or wireless communication medium using a multiplicity of discrete sub-channels. The modem includes a transform component and a time domain FEC component. The transform component transforms the multiplicity of discrete sub-channels of a communication between a time domain and a frequency domain on the receive path and vice-versa on the transmit path. The time domain FEC component couples to the transform component. The time domain FEC component has a complementary encoder and decoder portion on the transmit and receive paths respectively. The encoder and decoder portions encode and decode respectively the multiplicity of discrete sub-channels in the time domain.

    摘要翻译： 提供了一种用于使用多个离散子信道传送数据的调制解调器中的时域和频域前向纠错（FEC）的方法和装置。 本发明可以在硬件，软件或固件中实现。 在本发明的实施例中，公开了具有形成发送路径和接收路径的多个部件的调制解调器。 调制解调器使用多个离散子信道在有线或无线通信介质上传送数据。 调制解调器包括变换组件和时域FEC组件。 变换分量将发送路径上的接收路径上的时域和频域之间的通信的多个离散子信道进行变换，反之亦然。 时域FEC组件耦合到变换组件。 时域FEC分量在发送和接收路径上分别具有互补的编码器和解码器部分。 编码器和解码器部分分别对时域中的多个离散子信道进行编码和解码。

    Method and apparatus for analyzing and mitigating noise in a digital subscriber line
    9.
    发明授权
    Method and apparatus for analyzing and mitigating noise in a digital subscriber line 有权
    用于分析和减轻数字用户线路中的噪声的方法和装置

    公开(公告)号：US08428225B2

    公开(公告)日：2013-04-23

    申请号：US12375216

    申请日：2007-07-31

    申请人： John M. Cioffi ,  Wonjong Rhee ,  George Ginis ,  Sumanth Jagannathan

    发明人： John M. Cioffi ,  Wonjong Rhee ,  George Ginis ,  Sumanth Jagannathan

    IPC分类号： H04M1/24

    CPC分类号： H04L1/20 ,  H04B1/1027 ,  H04B3/32 ,  H04L41/0213 ,  H04L43/0823 ,  H04L43/16 ,  H04M3/2209 ,  H04M3/30

    摘要： Data indicative of a level of stability of a DSL link is received. Based on the received data, it is determined whether the data indicates a level of stability of the DSL link that is above or below a minimum threshold. If the level of stability of the DSL link is below the minimum threshold, die noise associated with the DSL link before the time of failure is compared with the noise associated with the DSL link after the time of failure. If the difference between the noise before and after the time of failure exceeds a threshold, then the difference in noise is characterized as a stationary noise associated with the DSL link. However, if the difference between the noise before and after the time of failure is below the threshold, a determination is made whether the failure is associated with a loss of power to the DSL link or a severe impulse noise event—the difference in noise is characterized accordingly. Finally, the characterization of the noise associated with the DSL link is preserved for subsequent possible reconfiguration of the DSL link to improve link stability.

    摘要翻译： 接收到指示DSL链路的稳定性水平的数据。 基于接收到的数据，确定数据是否指示高于或低于最小阈值的DSL链路的稳定性水平。 如果DSL链路的稳定性水平低于最小阈值，则在故障发生之前与DSL链路相关联的模块噪声与在故障之后与DSL链路相关联的噪声进行比较。 如果故障之前和之后的噪声之间的差异超过阈值，则噪声的差异被表征为与DSL链路相关联的稳定的噪声。 然而，如果故障之前和之后的噪声之间的差异低于阈值，则确定故障是否与DSL链路的功率损耗或严重的脉冲噪声事件相关联 - 噪声的差异是 相应地表征。 最后，保留与DSL链路相关联的噪声的表征，以便随后可能重新配置DSL链路以改善链路稳定性。

    SYSTEM AND METHOD TO DETERMINE POWER CUTBACK IN COMMUNICATION SYSTEMS
    10.
    发明申请
    SYSTEM AND METHOD TO DETERMINE POWER CUTBACK IN COMMUNICATION SYSTEMS 有权
    在通信系统中确定功率转换的系统和方法

    公开(公告)号：US20070009020A1

    公开(公告)日：2007-01-11

    申请号：US11425429

    申请日：2006-06-21

    申请人： Dilip Warrier ,  George Ginis

    发明人： Dilip Warrier ,  George Ginis

    IPC分类号： H04B1/38

    CPC分类号： H04L1/0001 ,  H04L1/0036 ,  H04L5/1438 ,  H04W52/04 ,  H04W52/346 ,  H04W52/367

    摘要： A system and method for adaptively determining power cutback in communication system is described. According to an embodiment, the receiver determines noise on each sub-channel for different internal gain settings. It calculates what gain setting would be optimal from an SNR point of view and what power cutback value would lead to that gain setting.

    摘要翻译： 描述了用于自适应地确定通信系统中的功率削减的系统和方法。 根据实施例，接收机针对不同的内部增益设置确定每个子信道上的噪声。 它从SNR的角度计算什么增益设置是最佳的，以及什么功率削减值会导致增益设置。