Title :
Algorithms to select optimum matched performance of programmable filters in telephone networks
Author :
Vairavan, Kannan P. ; Mcleod, Paul
Author_Institution :
Raynet Corp., Menlo Park, CA, USA
Abstract :
Two algorithms are described for optimizing the coefficients of programmable filters in telephone networks. The two algorithms work with the LMS (least-mean-squares) algorithm to find an optimal set of coefficients of a programmable FIR (finite-impulse response) filter in meeting the different requirements worldwide. The algorithms were simulated and verified experimentally.<>
Keywords :
digital filters; echo suppression; filtering and prediction theory; impedance matching; least squares approximations; optimisation; signal processing; telephone equipment; FIR digital filters; LMS algorithms; coefficients optimisation; echo cancellation; finite-impulse response; least-mean-squares; optimum matched performance; programmable filters; telephone networks; Circuits; Digital filters; Echo cancellers; Finite impulse response filter; Frequency response; Impedance; Intelligent networks; Matched filters; Signal processing algorithms; Telephony;
Conference_Titel :
Circuits and Systems, 1988., IEEE International Symposium on
Conference_Location :
Espoo, Finland
DOI :
10.1109/ISCAS.1988.15542
