NDLI: Dual domain echo cancellers for multirate discrete multitone systems

Content Provider	IEEE Xplore Digital Library
Author	Ehtiati, N. Champagne, B.
Copyright Year	2010
Description	Author affiliation: Department of Electrical and Computer Engineering, McGill University, Montréal, QC H3A 2A7, Canada (Ehtiati, N.; Champagne, B.)
Abstract	Digital echo cancellers are used in duplex digital subscriber lines (DSL) transceivers to remove the echo, which is the leakage of the transmitted signal onto the collocated receiver. For discrete multitone (DMT) modulated systems, the computational complexity of these cancellers can be reduced by using the structure present in the transmitted signal. In [1] and [2], we have proposed a novel dual domain echo canceller for symmetric rate DMT systems. In practical DSL systems, asymmetric bandwidths are used for the upstream and downstream transmissions, therefore, echo cancellers must be designed to work in multirate cases. In this paper, we examine the implementation of the previously proposed dual domain canceller in the multirate scenario, and show that by using the polyphase decomposition of the signals, a reduced complexity implementation of this canceller can be achieved.
Starting Page	111
Ending Page	115
File Size	189143
Page Count	5
File Format	PDF
ISBN	9781424497225
ISSN	10586393
e-ISBN	9781424497218
DOI	10.1109/ACSSC.2010.5757479
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-11-07
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Matrix decomposition Echo cancellers Transceivers Complexity theory Time domain analysis Transforms Symmetric matrices
Content Type	Text
Resource Type	Article
Subject	Signal Processing Computer Networks and Communications

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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