By Topic

Direct RF modulation 256QAM microwave system

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)
Conner, W.A. ; Rockwell Int., Richardson, TX, USA

A 2 GHz common carrier system utilizing 256-QAM for high spectrum efficiency is described. A simplification in system design is accomplished by the use of direct RF modulation and demodulation rather than a more traditional IF (intermediate frequency) heterodyne approach. Technical considerations for this direct approach are discussed. The use of automatic power control results in reduced battery requirements, improved reliability, and easier frequency coordination. With inclusive M12 muldems, extensive error correction, and time domain equalization techniques, the radio system provides 12 DS1 (19 MBS) in a 3.5 MHz bandwidth

Published in:

Global Telecommunications Conference, 1988, and Exhibition. 'Communications for the Information Age.' Conference Record, GLOBECOM '88., IEEE

Date of Conference:

28 Nov-1 Dec 1988