NDLI: A new adaptive echo canceller used in the ISDN U-interface

Content Provider	IEEE Xplore Digital Library
Author	Yang, D. Li, W.
Copyright Year	1988
Description	Author affiliation: Beijing Univ. of Posts & Telecommun., China (Yang, D.; Li, W.)
Abstract	A good adaptive echo canceller (EC), in terms of its performance, is an interesting problem for those who are engaged in the ISDN (integrated-services digital network) U-interface subscriber loop design. It is also important to implement an EC with low cost chips. An adaptive EC is proposed that makes its contribution in this respect. The filter combines some advantages possessed by common types of FIR (finite-impulse response) adaptive filters, transversal, and table lookup filters, together. In implementation, the filter design is mainly based on developing DSP (digital-signal-processor) chips, e.g. the Texas Instruments TMS320 family of microprocessors. The proposed architecture not only has a faster convergence speed than that of usual table lookup adaptive filters, but can also compensate the long period of echo tail caused by insufficient filter taps, especially when it is used in the full-duplex two-wire data transmission system with a net rate of 144 kb/s.<>
Starting Page	1600
Ending Page	1603
File Size	272356
Page Count	4
File Format	PDF
ISSN	15206149
DOI	10.1109/ICASSP.1988.196916
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1988-04-11
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Echo cancellers ISDN Adaptive filters Finite impulse response filter Transversal filters Table lookup Subscriber loops Costs Digital filters Digital signal processing chips
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
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
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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