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1. (WO2018137193) SIGNAL PROCESSING METHOD, APPARATUS AND SYSTEM

Pub. No.:    WO/2018/137193    International Application No.:    PCT/CN2017/072663
Publication Date: Fri Aug 03 01:59:59 CEST 2018 International Filing Date: Thu Jan 26 00:59:59 CET 2017
IPC: H04B 3/32
Applicants: HUAWEI TECHNOLOGIES CO., LTD.
华为技术有限公司
Inventors: LI, Ying
李莹
WANG, Xiang
王祥
Title: SIGNAL PROCESSING METHOD, APPARATUS AND SYSTEM
Abstract:
Provided is a signal processing method, comprising: a network side device sending a TEQ message, wherein the TEQ message carries parameter information required when a user side device carries out TEQ processing on a received synchronization symbol; the network side device receiving a feedback message from the user side device, wherein the feedback message indicates that the user side device does not carry out TEQ processing on the received synchronization symbol, and the feedback message also carries an intercepted error sample; and the network side device parsing the received feedback message and carrying out channel estimation and crosstalk coefficient calculation according to the intercepted error sample and then carrying out crosstalk cancellation. Further provided are a network side device and a user side device. By means of shielding TEQ processing for the synchronization symbols, a network side then carries out channel estimation and crosstalk coefficient calculation according to the intercepted error sample that does not include TEQ processing, and then carries out crosstalk cancellation, thereby reducing the bit error rate on all lines and improving the stability of a Vectored DSL system.