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    CROSSTALK CONTROL USING DELAYED POST-COMPENSATION IN A MULTI-CHANNEL COMMUNICATION SYSTEM
    1.
    发明申请
    CROSSTALK CONTROL USING DELAYED POST-COMPENSATION IN A MULTI-CHANNEL COMMUNICATION SYSTEM 审中-公开
    在多通道通信系统中使用延迟后补偿的波形控制

    公开(公告)号：US20110075834A1

    公开(公告)日：2011-03-31

    申请号：US12570093

    申请日：2009-09-30

    申请人： Alexei E. Ashikhmin ,  Adriaan J. De Lind Van Wijngaarden ,  Michael L.F. Peeters ,  Philip Alfred Whiting

    发明人： Alexei E. Ashikhmin ,  Adriaan J. De Lind Van Wijngaarden ,  Michael L.F. Peeters ,  Philip Alfred Whiting

    IPC分类号： H04B1/12 ,  H04M1/74

    CPC分类号： H04M3/34 ,  H04B3/32

    摘要： An access node of a communication system receives signals over respective first and second channels of the system, processes the signal received over the second channel and an initialization signal associated with the first channel to obtain estimated crosstalk coefficients characterizing crosstalk from the first channel into the second channel, introduces respective predetermined delays into the respective signals received over the first and second channels, and utilizes the estimated crosstalk coefficients to adjust the signal received over the second channel as delayed by the corresponding predetermined delay in order to compensate for the crosstalk from the first channel into the second channel. The first and second channels may comprise respective joining and active subscriber lines of a DSL system.

    摘要翻译： 通信系统的接入节点通过系统的相应第一和第二信道接收信号，处理通过第二信道接收的信号和与第一信道相关联的初始化信号，以获得表征从第一信道到第二信道的串扰的估计的串扰系数 将相应的预定延迟引入到通过第一和第二信道接收的相应信号中，并且利用所估计的串扰系数来调整在第二信道上接收的信号延迟相应的预定延迟，以补偿来自第一信道的串扰 通道进入第二个通道。 第一和第二信道可以包括DSL系统的相应加入和活动用户线路。

    Interpolation method and apparatus for increasing efficiency of crosstalk estimation
    6.
    发明授权
    Interpolation method and apparatus for increasing efficiency of crosstalk estimation 有权
    用于提高串扰估计效率的插值方法和装置

    公开(公告)号：US08300726B2

    公开(公告)日：2012-10-30

    申请号：US11934347

    申请日：2007-11-02

    申请人： Alexei Ashikhmin ,  Adriaan J. De Lind Van Wijngaarden ,  Gerhard Guenter Theodor Kramer ,  Philip Alfred Whiting ,  Miroslav Zivkovic

    发明人： Alexei Ashikhmin ,  Adriaan J. De Lind Van Wijngaarden ,  Gerhard Guenter Theodor Kramer ,  Philip Alfred Whiting ,  Miroslav Zivkovic

    IPC分类号： H04K1/02

    CPC分类号： H04B3/32 ,  H04B3/487

    摘要： Techniques are disclosed that efficiently obtain channel crosstalk estimates in DSL systems and other communication systems that may include unsynchronized channels. For example, a method includes obtaining a first set of estimated measures of crosstalk for a first portion of a plurality of communication channels over which data signals are to be transmitted from a transmitter to a plurality of receivers, and interpolating a second set of estimated measures of crosstalk for a second portion of the plurality of communication channels based on the first set of estimated measures of crosstalk. The first portion of the plurality of communication channels may be a subset of the plurality of communication channels and the second portion of the plurality of communication channels is a remainder of the plurality of communication channels. Each estimated measure of crosstalk may relate to at least one tone associated with at least one of the plurality of communication channels.

    摘要翻译： 公开了在DSL系统和可能包括不同步信道的其他通信系统中有效地获得信道串扰估计的技术。 例如，一种方法包括获得第一组估计的多个通信信道的第一部分的串扰测量值，数据信号将从该发送器发送到多个接收机，并且内插第二组估计度量 基于所述第一组估计的串扰测量值，所述多个通信信道的第二部分的串扰。 多个通信信道的第一部分可以是多个通信信道的子集，并且多个通信信道的第二部分是多个通信信道的剩余部分。 每个估计的串扰测量可以涉及与多个通信信道中的至少一个相关联的至少一个音调。

    Fast seamless joining of channels in a multi-channel communication system
    7.
    发明授权
    Fast seamless joining of channels in a multi-channel communication system 有权
    在多通道通信系统中快速无缝连接通道

    公开(公告)号：US08300518B2

    公开(公告)日：2012-10-30

    申请号：US12060653

    申请日：2008-04-01

    申请人： Alexei Ashikhmin ,  Adriaan J. De Lind Van Wijngaarden ,  Gerhard Guenter Theodor Kramer ,  Carl Jeremy Nuzman ,  Philip Alfred Whiting

    发明人： Alexei Ashikhmin ,  Adriaan J. De Lind Van Wijngaarden ,  Gerhard Guenter Theodor Kramer ,  Carl Jeremy Nuzman ,  Philip Alfred Whiting

    IPC分类号： H04J3/10

    CPC分类号： H04M3/18 ,  H04M3/30 ,  H04M3/34 ,  H04M2203/058

    摘要： At least one channel is joined to a group of active channels in a communication system by transmitting control signals to configure respective customer premises equipment (CPE) of the active channels into a joining mode of operation, and transmitting a joining signature sequence to CPE of the joining channel over a downstream data signal path of the joining channel. A central office (CO) or other access node of the system receives correlation results from respective active channel CPE, estimates crosstalk from the joining channel into the active channels based on the correlation results, configures a precoder based on the estimated crosstalk, and adds the joining channel to the group of active channels. The channels may comprise respective subscriber lines of a DSL communication system.

    摘要翻译： 通过发送控制信号将至少一个信道连接到通信系统中的一组活动信道，以将活动信道的相应客户驻地设备（CPE）配置为加入操作模式，并将加入签名序列发送到 在加入信道的下游数据信号路径上加入信道。 该系统的中心局（CO）或其他接入节点从相应的有源信道CPE接收相关结果，基于相关结果估计从加入信道到有源信道的串扰，基于所估计的串扰配置预编码器， 加入频道到活跃频道组。 信道可以包括DSL通信系统的相应用户线路。

    Crosstalk Estimation Methods and Apparatus Using Auxiliary Time-Domain Signals
    8.
    发明申请
    Crosstalk Estimation Methods and Apparatus Using Auxiliary Time-Domain Signals 有权
    使用辅助时域信号的串扰估计方法和装置

    公开(公告)号：US20080291989A1

    公开(公告)日：2008-11-27

    申请号：US11753332

    申请日：2007-05-24

    申请人： Alexei Ashikhmin ,  Philip Alfred Whiting ,  Adriaan J. De Lind Van Wijngaarden

    发明人： Alexei Ashikhmin ,  Philip Alfred Whiting ,  Adriaan J. De Lind Van Wijngaarden

    IPC分类号： H04B17/00 ,  H04J1/12 ,  H04L27/28

    CPC分类号： H04B3/487 ,  H04L27/2601

    摘要： Techniques are disclosed for measuring crosstalk between at least two communication channels of a communication system. A receiver of the system receives a signal over a given one of the communication channels from a transmitter of the system. The receiver correlates the received signal with a sequence of time-domain signals associated with another of the communication channels, and generates a measure of crosstalk between the given communication channel and the other communication channel based on the correlation between the received signal and the sequence of time-domain signals. The sequence of time-domain signals may be selected from a designated set of M-sequences.

    摘要翻译： 公开了用于测量通信系统的至少两个通信信道之间的串扰的技术。 系统的接收机从系统的发射器接收通过给定的一个通信信道的信号。 接收器将接收到的信号与与另一个通信信道相关联的时域信号序列进行相关，并且基于接收信号和序列之间的相关性，生成给定通信信道与另一通信信道之间的串扰量度 时域信号。 可以从指定的一组M序列中选择时域信号的序列。

    Method and apparatus for self-tuning precoder
    9.
    发明授权
    Method and apparatus for self-tuning precoder 有权
    自调谐预编码器的方法和装置

    公开(公告)号：US08081560B2

    公开(公告)日：2011-12-20

    申请号：US11848684

    申请日：2007-08-31

    申请人： Adriaan J. De Lind Van Wijngaarden ,  Gerhard Guenter Theodor Kramer ,  Carl J. Nuzman ,  Philip Alfred Whiting ,  Miroslav Zivkovic

    发明人： Adriaan J. De Lind Van Wijngaarden ,  Gerhard Guenter Theodor Kramer ,  Carl J. Nuzman ,  Philip Alfred Whiting ,  Miroslav Zivkovic

    IPC分类号： H04J1/12

    CPC分类号： H04B3/32

    摘要： Techniques are disclosed for compensating for crosstalk using adaptation of data signals transmitted over respective channels of a communication system. For example, a method includes the following steps. A first set of estimated measures of crosstalk is obtained for at least a selected portion of a plurality of communication channels over which data signals are to be transmitted from a transmitter to at least a selected portion of a plurality of receivers. A first set of data signals based on the first set of estimated measures of crosstalk is adapted to generate a first set of adjusted data signals. The first set of adjusted data signals is transmitted to corresponding ones of the plurality of receivers. A second set of estimated measures of crosstalk is obtained for the selected portion of the plurality of communication channels. A second set of data signals for transmission based on the second set of estimated measures of crosstalk is adapted to generate a second set of adjusted data signals. Iteration of the obtaining, adjusting and transmitting steps is performed so as to reduce an error between subsequent estimated measures of crosstalk and actual measures of crosstalk for the plurality of communication channels.

    摘要翻译： 公开了用于通过在通信系统的各个信道上发送的数据信号的适配来补偿串扰的技术。 例如，一种方法包括以下步骤。 对于多个通信信道的至少一部分的数据信号将从发射机发送到多个接收机的至少一个选定部分，获得第一组估计的串扰度量。 基于第一组估计的串扰测量值的第一组数据信号适于产生第一组经调整的数据信号。 第一组经调整的数据信号被发送到多个接收机中的相应的一个。 针对多个通信信道的所选部分获得第二组估计的串扰度量。 用于基于第二组估计的串扰测量的用于传输的第二组数据信号适于产生第二组经调整的数据信号。 执行获取，调整和发送步骤的迭代，以减少后续估计的串扰测量与多个通信信道的串扰实际测量之间的误差。

    Crosstalk estimation methods and apparatus using auxiliary time-domain signals
    10.
    发明授权
    Crosstalk estimation methods and apparatus using auxiliary time-domain signals 有权
    使用辅助时域信号的串扰估计方法和装置

    公开(公告)号：US07809070B2

    公开(公告)日：2010-10-05

    申请号：US11753332

    申请日：2007-05-24

    申请人： Alexei Ashikhmin ,  Philip Alfred Whiting ,  Adriaan J. De Lind Van Wijngaarden

    发明人： Alexei Ashikhmin ,  Philip Alfred Whiting ,  Adriaan J. De Lind Van Wijngaarden

    IPC分类号： H04L27/28

    CPC分类号： H04B3/487 ,  H04L27/2601

    摘要： Techniques are disclosed for measuring crosstalk between at least two communication channels of a communication system. A receiver of the system receives a signal over a given one of the communication channels from a transmitter of the system. The receiver correlates the received signal with a sequence of time-domain signals associated with another of the communication channels, and generates a measure of crosstalk between the given communication channel and the other communication channel based on the correlation between the received signal and the sequence of time-domain signals. The sequence of time-domain signals may be selected from a designated set of M-sequences.

    摘要翻译： 公开了用于测量通信系统的至少两个通信信道之间的串扰的技术。 系统的接收机从系统的发射器接收通过给定的一个通信信道的信号。 接收器将接收到的信号与与另一个通信信道相关联的时域信号序列进行相关，并且基于接收信号和序列之间的相关性，生成给定通信信道与另一通信信道之间的串扰量度 时域信号。 可以从指定的一组M序列中选择时域信号的序列。