发明名称 |
CROSSTALK IDENTIFICATION IN xDSL SYSTEMS |
摘要 |
Methods, apparatus and systems for identifying crosstalk interference in xDSL systems are disclosed and are useful in a variety of xDSL systems to assist in the provisioning, maintenance and diagnosis of the xDSL system and in spectral management and assignments. Signal data are collected from a receiver, a primary transmitter and any crosstalk transmitters. The signal data are resampled, if necessary. A first estimate of the timing offset between the received signal and each crosstalk signal is then obtained by cross-correlating the received data with the transmitted crosstalk data. The first timing offset estimate is then used in connection with a least-squares estimation of the crosstalk response for the considered crosstalk data and a second estimate of the timing offset. The invention may be used at a third party site remote from the system transmitters and receivers. The crosstalk identification of the present invention can be used in dynamic spectrum management for DSL services and signals. |
申请公布号 |
WO02063813(A3) |
申请公布日期 |
2003.05.08 |
申请号 |
WO2002US02861 |
申请日期 |
2002.02.01 |
申请人 |
THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY |
发明人 |
ZENG, CHAOHUANG;ALDANA, CARLOS, HORACIO;SALVEKAR, ATULL;CIOFFI, JOHN, M. |
分类号 |
H04B3/46 |
主分类号 |
H04B3/46 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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