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

Comments on "A Comparison of Several Types of Modulation"

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)
Levine, S. ; Aerospace Corp., Los Angeles, CA ; Weaver, C.

In the above-named work it is argued that Weaver [ibid., vol. CS-I0. pp. 91l-101, March 1962] uses the criterion of error probability to compare several PCM modulation- demodulation schemes. His curves of error probability vs. signal-to-noise ratio for maximum likelihood detection of PCM-AM and discriminator detection of PCM-FM differ markedly from other published results. In both cases, the differences result from computing the error probability from an approximated Gaussian distribution at the detector output. Most Gaussian approximatious are valid in a region centered about the mean and are not valid for the tails of the distribution. Error probabilities are obtained by integrating over a region in the tail of the distribution. Small deviations in the tails of a distribution can result in large differences in error probability. Hence, the tails of the approximating distribution must closely approach the tails of the true distribution for a valid approximation. That this is not the case is illustrated by the divergence between Weaver's results and other published results based on the exact distribution.

Published in:

Communication Technology, IEEE Transactions on  (Volume:14 ,  Issue: 1 )

Date of Publication:

February 1966

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.