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2. 发明授权

US06452967B1 Method and device for reducing coupling effects between neighboring telephone devices 有权
标题翻译：用于减少相邻电话设备之间的耦合效应的方法和设备
公开(公告)号：US06452967B1
公开(公告)日：2002-09-17
申请号：US09251839
申请日：1999-02-17
申请人： François Druilhe
发明人： François Druilhe
IPC分类号： H03H730
CPC分类号： H04Q11/0442 , H04Q2213/13166 , H04Q2213/1319 , H04Q2213/13203 , H04Q2213/13209 , H04Q2213/13216 , H04Q2213/13292 , H04Q2213/13302 , H04Q2213/1332 , H04Q2213/13322
摘要： A method for reducing disturbing effects of coupling between a first transmission/reception device and a second transmission/reception device that are each connected to a subscriber line. According to the method, a signal received on a reception path of the first device is delayed by a delay equal to p times the transmission period. A coupling signal relating to a transmission path of a second device and the reception path of the first device is estimated based on a signal transmitted over the transmission path of the second device, and the delayed signal is ridded of the estimated coupling signal. Additionally, a device for transmitting/receiving a signal is provided. The device includes a memory coupled to a reception path for temporarily storing p symbols, a subtraction circuit, and a coupling estimation block. The coupling estimation block includes an adaptive filter with n (n>p) coupling coefficients and an estimation circuit that receives an ancillary transmission signal of another transmission/reception device. The estimation circuit and adaptive filter successively determine the n coupling coefficients as a function of the ancillary transmission signal and sum the coupling coefficients successively so as to deliver a coupling signal that is representative of estimated coupling between the reception path and the transmission path of the other device. The subtraction circuit receives an output of the memory and an output of the coupling estimation block.
摘要翻译：一种用于减少每个连接到用户线的第一发送/接收装置和第二发送/接收装置之间的耦合的干扰效果的方法。根据该方法，在第一装置的接收路径上接收的信号被延迟等于传输周期的p倍的延迟。基于通过第二设备的传输路径发送的信号来估计与第二设备的传输路径和第一设备的接收路径相关的耦合信号，并且延迟的信号被舍弃在估计的耦合信号上。另外，提供了用于发送/接收信号的装置。该装置包括耦合到用于临时存储p个符号的接收路径的存储器，减法电路和耦合估计块。耦合估计块包括具有n（n> p）个耦合系数的自适应滤波器和接收另一个发射/接收装置的辅助发射信号的估计电路。估计电路和自适应滤波器依次确定n个耦合系数作为辅助传输信号的函数，并连续求和耦合系数，以便传递代表接收路径与其他传输路径之间估计耦合的耦合信号设备。减法电路接收存储器的输出和耦合估计块的输出。

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