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

Echo Distortion in the FM Transmission of Frequency-Division Multiplex

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

2 Author(s)
Albersheim, W.J. ; Bell Telephone Laboratories, Inc., Deal, N.J. ; Schafer, J.P.

The composite multiplex signals generated by frequency-division methods long standard in telephone communication, can be transmitted by the new transcontinental broad-band FM radio relays. Signal intermodulation by echoes must be minimized. Such intermodulation is investigated in this paper experimentally and analytically. Two types of echoes are considered: (1) Weak echoes with delays exceeding 0.1 microseconds, caused mainly by mismatched long lines; and (2) Powerful echoes with delays shorter than 0.01 microseconds, caused by multipath transmission, and leading to selective fading. Using random noise signals, the distortion is evaluated as a function of various parameters of the echo, the baseband and the rf modulation.

Published in:

Proceedings of the IRE  (Volume:40 ,  Issue: 3 )

Date of Publication:

March 1952

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.