IMPROVED CROSSTALK CHANNEL ESTIMATION FOR LEGACY CPE

WIPO Patent Application WO/2018/113674

A1

A digital subscriber line (DSL) network device for coupling to DSL communication lines, the network device comprising: multiplexing circuitry that transmits signals to vector-compliant consumer premises equipment (CPE) and legacy CPE via the DSL communication lines; and processing circuitry configured to: initiate transmission of a predetermined set of orthogonal pilot sequences to a plurality of vector-compliant CPEs; initiate transmission of data symbols corresponding to the set of orthogonal pilot sequences to one or more legacy CPEs; pre-process line errors of a victim vector-compliant CPE to remove far-end crosstalk due to the vector compliant disturber lines and perform the same pre-processing for the transmitted data symbols; determine far-end channel crosstalk information using a correlation of the pre-processed line errors and the pre-processed transmitted data symbols; and reduce far-end channel crosstalk of the victim vector-compliant CPE using the determined far-end channel crosstalk information.

JP3201276	SIGNAL TRANSMISSION CIRCUIT
WO/1999/067880	TRANSMISSION OF POWER AND SIGNALS OVER COAXIAL CABLE, TWISTED PAIR CABLE, AND OTHER ELECTRIC CABLES
WO/2014/062574	DATA TRANSMISSION COORDINATION OVER DIGITAL SUBSCRIBER LINES

LIANG HAIXIANG (US)
HE YUJIE (US)
TU JIANPING (US)

PCT/CN2017/117231

June 28, 2018

December 19, 2017

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HUAWEI TECH CO LTD (CN)

H04B3/32; H04L1/00

WO2016061254A1

2016-04-21

CN103828251B	2016-06-15
US20140185659A1	2014-07-03
CN103125104A	2013-05-29
CN101645754A	2010-02-10

G. VECTOR ET AL., A BACKWARD-COMPATIBLE CROSSTALK CHANNEL ESTIMATION METHOD FOR DOWNSTREAM VECTORING
See also references of EP 3549272A4

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