By Topic

Coherent Echo Modulation and Detection

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)
Halsted, L. ; Aerospace Corp., El Segundo, CA

Coherent echo modulation and detection (CEMAD) is a broadband modulation and detection scheme for the transmission of binary data. In CEMAD each data bit is transmitted and then enters a signal selection process to be retransmitted or echoed for a period of time with the echoing used to advantage in a multidecision process. The scheme can provide 1) transmitter power savings, compared to, e.g., coherent PSK, 2) in effect, both time and frequency diversity reception, and 3) secure communication. It appears to also have a good signal acquisition capability. The scheme is described, and both analytical and simulation results are presented.

Published in:

Communication Technology, IEEE Transactions on  (Volume:14 ,  Issue: 5 )