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。

公开(公告)号：US20100329399A1

公开(公告)日：2010-12-30

申请号：US12640997

申请日：2009-12-17

申请人： Adriaan J. De Lind Van Wijngaarden

发明人： Adriaan J. De Lind Van Wijngaarden

IPC分类号： H04B1/10 ,  H04L27/00

CPC分类号： H04M11/062 ,  H04B3/32 ,  H04L25/03343 ,  H04L2025/03426

摘要： In a communication system, a postcoder is coupled between first and second portions of each of a plurality of receivers. The postcoder is configured to receive an adaptive index representation of a scaled signal associated with the first portion of a first one of the receivers, and to process the adaptive index representation using an adjusted postcoder coefficient to generate a postcompensation signal. The postcompensation signal is supplied by the postcoder to the second portion of a second one of the receivers for use in postcompensation of at least one signal received by the second receiver.

摘要翻译： 在通信系统中，后编码器耦合在多个接收机中的每一个的第一和第二部分之间。 后置编码器被配置为接收与第一接收机的第一部分相关联的经缩放的信号的自适应索引表示，并且使用调整的后编码器系数来处理自适应索引表示以产生后补偿信号。 后补偿信号由后编码器提供给第二接收机的第二部分，用于后补偿由第二接收机接收的至少一个信号。

公开(公告)号：US20100329386A1

公开(公告)日：2010-12-30

申请号：US12640975

申请日：2009-12-17

申请人： Adriaan J. De Lind Van Wijngaarden

发明人： Adriaan J. De Lind Van Wijngaarden

IPC分类号： H04L25/49

CPC分类号： H04M11/062 ,  H04B3/32 ,  H04L25/03343 ,  H04L2025/03426

摘要： In a communication system, a precoder is coupled between first and second portions of each of a plurality of transmitters. The precoder is configured to receive an adaptive index representation of a scaled signal associated with the first portion of a first one of the transmitters, and to process the adaptive index representation using an adjusted precoder coefficient to generate a precompensation signal. The precompensation signal is supplied from the precoder to the second portion of a second one of the transmitters for use in precompensation of at least one signal to be transmitted by the second transmitter.

摘要翻译： 在通信系统中，预编码器耦合在多个发射机中的每一个的第一和第二部分之间。 预编码器被配置为接收与发射机中的第一个发射机的第一部分相关联的缩放信号的自适应索引表示，并且使用经调整的预编码器系数来处理自适应索引表示以产生预补偿信号。 预补偿信号从预编码器提供给第二发射机的第二部分，用于对由第二发射机发射的至少一个信号进行预补偿。

公开(公告)号：US20100153828A1

公开(公告)日：2010-06-17

申请号：US12612674

申请日：2009-11-04

申请人： Adriaan J. De Lind Van Wijngaarden ,  Andreas Bernhard Zottmann

发明人： Adriaan J. De Lind Van Wijngaarden ,  Andreas Bernhard Zottmann

IPC分类号： H03M13/09 ,  G06F11/10

CPC分类号： H03M13/09 ,  H03M13/611 ,  H03M13/6522 ,  H03M13/6527 ,  H04L1/0041 ,  H04L1/0076 ,  H04L1/0084

摘要： A method processes a data packet in a first sequence of disjoint original segments of the same length. The method includes modifying a first of the original segments of the first sequence by modifying one or more symbols therein. A start of the data packet is located in the first of the original segments and is positioned after a first digital data symbol therein. The method also includes modifying a last of the original segments of the first sequence by modifying one or more digital data symbols therein. An end of the data packet is located in the last of the original segments and is located before the last digital data symbol therein. The method also includes determining a remainder sequence by effectively performing a polynomial division on a second sequence of disjoint segments that are derived from the first sequence. Each segment of the second sequence corresponds to and is derived from one of the original segments of the first sequence. The segments of the second sequence have the length of the original segments of the first sequence. A first of the derived segments of the second sequence is the modified first of the original segments. A last of the derived segments of the second sequence is derived from the modified last of the original segments.

摘要翻译： 一种方法处理相同长度的不相交的原始段的第一序列中的数据分组。 该方法包括通过修改其中的一个或多个符号来修改第一序列的第一个原始段。 数据分组的开始位于第一个原始分段中，并且位于其中的第一数字数据符号之后。 该方法还包括通过修改其中的一个或多个数字数据符号来修改第一序列的最后一个原始段。 数据包的结尾位于最后的原始段中，并且位于其中的最后一个数字数据符号之前。 该方法还包括通过有效地执行从第一序列导出的第二不相交段序列上的多项式除法来确定余数序列。 第二序列的每个片段对应于并且从第一序列的原始片段之一导出。 第二序列的片段具有第一序列的原始片段的长度。 第二个序列的导出段中的第一个是原始段的修改的第一个段。 第二个序列的最后导出段是从修改的最后一个原始段导出的。

公开(公告)号：US20100046684A1

公开(公告)日：2010-02-25

申请号：US12230080

申请日：2008-08-22

申请人： Adriaan J. De Lind Van Wijngaarden ,  Gerhard G. T. Kramer ,  Carl J. Nuzman ,  Philip A. Whiting

发明人： Adriaan J. De Lind Van Wijngaarden ,  Gerhard G. T. Kramer ,  Carl J. Nuzman ,  Philip A. Whiting

IPC分类号： H04L7/00

CPC分类号： H04L23/02 ,  H04B3/487 ,  H04B2201/70701

摘要： The present invention relates to a communication system and method for transmitting sync flags and pilot symbols during sync symbol periods. Example embodiments provide a method for sharing sync symbols to communicate flag sequences and pilot sequences during a sequence of sync symbol periods. The method includes modulating the pilot sequence by multiplying a pilot code by each value of the pilot sequence, and modulating the flag sequence by multiplying a flag code by each value of the flag sequence. The pilot and flag codes are mutually orthogonal to each other and each includes at least two non-zero values. The method further includes generating a resulting sync symbol sequence based on the modulated pilot sequence and modulated flag sequence, and sending the resulting sync symbol sequence during the sync symbol period.

摘要翻译： 本发明涉及用于在同步符号周期期间发送同步标志和导频符号的通信系统和方法。 示例性实施例提供了一种在同步符号周期的序列期间共享同步符号以传送标志序列和导频序列的方法。 该方法包括通过将导频码乘以导频序列的每个值来调制导频序列，并通过将标志码乘以标志序列的每个值来调制标志序列。 导频和标志码彼此相互正交，并且每个包括至少两个非零值。 该方法还包括基于调制的导频序列和调制的标记序列产生所得到的同步符号序列，以及在同步符号周期期间发送所得到的同步符号序列。

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。