A low-complexity adaptive echo canceller for xDSL applications

Shou Sheu Lin; Wen-Rong Wu

doi:10.1109/TSP.2004.826155

A low-complexity adaptive echo canceller for xDSL applications

Shou Sheu Lin^*, Wen-Rong Wu

^*Corresponding author for this work

Department of Electrical and Computer Engineering

Research output: Contribution to journal › Letter › peer-review

11 Scopus citations

Abstract

A finite response (FIR)-based adaptive filter structure is proposed for echo cancellation in xDSL applications. The proposed algorithm consists of an FIR filter, a cascaded interpolated FIR filter, and a tap-weight overlapping and nulling scheme. This filter requires low computational complexity and inherits the stable characteristics of the conventional FIR filter. Simulations show that the proposed echo canceller can effectively cancel the echo up to 73.4 dB [for a single-pair high-speed digital subscriber line (SHDSL) system]. About 55% complexity reduction can be achieved compared with a conventional FIR filter.

Original language	English
Article number	1284844
Pages (from-to)	1461-1465
Number of pages	5
Journal	IEEE Transactions on Signal Processing
Volume	52
Issue number	5
DOIs	https://doi.org/10.1109/TSP.2004.826155
State	Published - May 2004

Keywords

Adaptive filter
DSL
Echo cancellation
Interpolated FIR filter

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10.1109/TSP.2004.826155

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title = "A low-complexity adaptive echo canceller for xDSL applications",

abstract = "A finite response (FIR)-based adaptive filter structure is proposed for echo cancellation in xDSL applications. The proposed algorithm consists of an FIR filter, a cascaded interpolated FIR filter, and a tap-weight overlapping and nulling scheme. This filter requires low computational complexity and inherits the stable characteristics of the conventional FIR filter. Simulations show that the proposed echo canceller can effectively cancel the echo up to 73.4 dB [for a single-pair high-speed digital subscriber line (SHDSL) system]. About 55% complexity reduction can be achieved compared with a conventional FIR filter.",

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author = "Lin, {Shou Sheu} and Wen-Rong Wu",

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AU - Wu, Wen-Rong

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AB - A finite response (FIR)-based adaptive filter structure is proposed for echo cancellation in xDSL applications. The proposed algorithm consists of an FIR filter, a cascaded interpolated FIR filter, and a tap-weight overlapping and nulling scheme. This filter requires low computational complexity and inherits the stable characteristics of the conventional FIR filter. Simulations show that the proposed echo canceller can effectively cancel the echo up to 73.4 dB [for a single-pair high-speed digital subscriber line (SHDSL) system]. About 55% complexity reduction can be achieved compared with a conventional FIR filter.

KW - Adaptive filter

KW - DSL

KW - Echo cancellation

KW - Interpolated FIR filter

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JO - IEEE Transactions on Signal Processing

JF - IEEE Transactions on Signal Processing

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ER -

A low-complexity adaptive echo canceller for xDSL applications

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