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

Increased dynamic range multi-rate waveform for mobile satellite communications: Adaptive Coding Spreading and Modulation (ACSM)

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

4 Author(s)
O'Neill, J. ; ViaSat Inc., Carlsbad, CA, USA ; Loh, A. ; Velayudhan, N. ; Shay Har-Noy

For time-division multiplexed satellite communications links, a multi-rate waveform can enable substantial capacity gains over waveforms employing static coding and modulation. Using a multi-rate waveform such as DVB-S2 with adaptive coding and modulation (ACM), a user's data is transported with the most efficient modulation and forward error correction coding point that specific user can reliably receive. Many mobile satellite communication applications require a substantially smaller aperture or a lower-profile antenna as compared to typical fixed-site very small aperture terminals (VSATs) for which DVB-S2 was designed. Over a wide area of operation, these smaller mobile terminals often cannot establish a link that observes regulatory power-spectral density limits using even the most robust modulation and code point that the DVB-S2 waveform offers. By adding the concept of adaptive direct sequence spreading to the adaptive coding and modulation, a more capable multi-rate waveform emerges that addresses a comprehensive set of mobile terminal platform types and scenarios. In this paper, the Adaptive Coding Spreading and Modulation (ACSM) concept is described and the capacity gains are quantified for several case studies. Also, a blockage mitigation technique employed within the ACSM concept that enables communications on train or helicopter mounted platforms is discussed.

Published in:

MILITARY COMMUNICATIONS CONFERENCE, 2010 - MILCOM 2010

Date of Conference:

Oct. 31 2010-Nov. 3 2010

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.