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US08731185B2 Single ended estimation of far-end crosstalk in a digital subscriber line 有权
数字用户线中远端串扰的单端估计

Single ended estimation of far-end crosstalk in a digital subscriber line
Abstract:
An apparatus for estimating far-end crosstalk RDS-FEXT, i (fd) or an end (C1-2) of a communication line (C1) furthest from a transceiver (10-1) to which the communication line (C1) is connected. The apparatus is configured to: measure upstream noise RUS-Noise(fu) at an upstream frequency (fu), the upstream noise RUS-Noise(fu) induced in the communication line (C1) due to the crosstalk; select a downstream frequency (fd) for which the far-end crosstalk RDS-FEXT, i (fd) is to determined; and estimate the far-end crosstalk RDS-FEXT, i (fd)′ as a function of the upstream Noise RUS-Noise(fu), the upstream frequency (fu) and the downstream frequency (fd). An apparatus reversing upstream and downstream features, a system, a computer readable medium and related methods are also described.
Abstract(Chinese):

一种用于估计距离与通信线路（C1）连接的收发机（10-1）最远的通信线路（C1）的远端串扰RDS-FEXT，i（fd）或端部（C1-2）的装置 。 该装置被配置为：测量上行频率（fu）的上行噪声RUS-噪声（fu），由于串扰导致在通信线路（C1）中感应的上行噪声RUS-噪声（fu）; 选择要确定远端串扰RDS-FEXT，i（fd）的下行频率（fd）; 并估计作为上行噪声RUS-噪声（fu），上游频率（fu）和下游频率（fd）的函数的远端串扰RDS-FEXT，i（fd）'。 还描述了反转上游和下游特征的装置，系统，计算机可读介质和相关方法。

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