Cart (Loading....) | Create Account
Close category search window
 

Adaptive digital filters for equalization of telephone channels

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

1 Author(s)
Proakis, J.G. ; Northeastern University, Boston, MA, USA

An application of digital filtering to communication over a channel having amplitude and phase distortion in the frequency band occupied by the transmitted signal is presented. Described are a nonrecursive and a recursive digital filter which can serve as adaptive equalizers in compensating for the amplitude and phase distortion caused by the channel. The filter coefficients are adjusted automatically by the use of a test signal which is transmitted over the channel. The adjustment of the coefficients is carried out in the presence of noise with the aid of a steepest descent algorithm. The recursive filter, consisting of a comb filter in cascade with a bank of parallel two-pole filters, is shown to be especially suited for performing equalization. By choosing as a test signal sinusoids whose frequencies coincide with the poles of the two-pole filters, the coefficients of the recursive filter are easily adjusted.

Published in:

Audio and Electroacoustics, IEEE Transactions on  (Volume:18 ,  Issue: 2 )

Date of Publication:

Jun 1970

Need Help?


IEEE Advancing Technology for Humanity About IEEE Xplore | Contact | Help | Terms of Use | Nondiscrimination Policy | Site Map | Privacy & Opting Out of Cookies

A not-for-profit organization, IEEE is the world's largest professional association for the advancement of technology.
© Copyright 2014 IEEE - All rights reserved. Use of this web site signifies your agreement to the terms and conditions.