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

Repetition protocols and channel state information in block-fading channels

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)
Tuninetti, D. ; Univ. of Illinois, Chicago, IL

In today's networks, error correction is achieved by a combination of FEC (forward error correction) and ARQ (automatic repetition request). In classical repetition protocols, a receiver requests a retransmission in case FEC-decoding fails. In this work we revise and summarize our recent results that show the benefits of using the retransmission request bit(s) not only to request a retransmission, but also to inform coarsely the transmitter about the actual channel condition. Our goal is to simultaneously enable the performance gain due to retransmission and to power control at the transmitter. We give an explicit protocol construction for any number of retransmissions and any number of feedback bits, and show remarkable throughput improvements, especially at low and moderate SNR (signal to noise ratio). For the case of a single retransmission and a single feedback bit, we show that the repetition is not needed at low SNR and that the throughput improvement is due to power control only, which allows to turn off transmission when the channel is in deep fade. On the other hand, at high SNR, the repetition turns out to be useful, and the performance gain comes form a combination of power control and ability to send more redundancy bits through repetition.

Published in:

Communications, 2008 IEEE International Zurich Seminar on

Date of Conference:

12-14 March 2008

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.