"Echo is a very well known phenomenon in telephonic networks. Noticeable echo may create significant disturbance in a telephonic conversation. A Network echo canceller plays a major role in maintaining the quality of service on a telephonic network at an affordable computational complexity cost. The market place is full of advanced echo cancellation algorithms which deliver good performances.
The problem of network echo cancellation (NEC) arises mainly in Public Switching Telephone Networks (PSTN) and packet telephony networks. Here we address the NEC problem for PSTN. An adaptive filter design is explained in this thesis which delivers excellent performance for the NEC problem in PSTN networks.
The introduced adaptive design process is a multi algorithm approach for the NEC problem. The performance of the algorithm is compared to current existing algorithms such as Normalized Least Mean Squares (NLMS), Proportionate Normalized Least Mean Squares (PNLMS) and Affine Projection Algorithm (APA). The convergence properties of the adaptive filters are examined and compared. The comparison also includes the measure of efficiency of the algorithm in terms of the implementation and results"--Abstract, page iv.
Grant, Steven L.
Zheng, Y. Rosa
Moss, Randy Hays, 1953-
Electrical and Computer Engineering
M.S. in Electrical Engineering
Wilkens Missouri Endowment
University of Missouri--Rolla
Journal article titles appearing in thesis/dissertation
- A new multi-algorithm approach for sparse system adaptation
- Attacking the slow final convergence rate of PNLMS
- Multi-algorithm approach for network echo cancellation
x, 41 pages
© 2006 Ashrith Deshpande, All rights reserved.
Thesis - Restricted Access
Echo suppression (Telecommunication)
Regression analysis -- Mathematical models
Telephone switching systems, Electronic
Print OCLC #
Link to Catalog Record
Electronic access to the full-text of this document is restricted to Missouri S&T users. Otherwise, request this publication directly from Missouri S&T Library or contact your local library.http://merlin.lib.umsystem.edu/record=b5792032~S5
Deshpande, Ashrith, "A new multi-algorithm approach for network echo cancellation problem" (2006). Masters Theses. 5926.
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