By Topic

Improving the performance of ARQ protocols over AWGN channels using an optimized energy allocation

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
$33 $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

3 Author(s)
Kaddour, B. ; MEDIATRON Lab., Univ. of the 7th November at Carthage, Ariana, Tunisia ; Siala, M. ; Boujemaa, H.

In this paper, we propose an improvement of truncated ARQ protocol throughput through the optimization of the distribution of the average energy cost per packet (or, equivalently, per symbol) among all packet transmission attempts. We consider exclusively BPSK-modulated ARQ transmission over an AWGN channel, with and without packet combining using the selective repeat as a transmission protocol. Our optimisation approach is based on a specific choice of the symbol energy of packets during transmission attempts (first transmission and potential subsequent retransmissions), while keeping the total energy cost per transmitted packet (or, equivalently, per symbol fixed. For a given Signal-to-Noise Ratio, the optimum distribution of the total energy cost among packet transmission attempts is obtained using a dichotomy search. Numerical results show that the energy distribution is almost surely unevenly distributed among packet transmission attempts. More specifically, for low SNR, almost most of the total energy is allocated to the first transmission while for large SNR, the allocated energy keep increasing with unsuccessful retransmission attempts. Numerical results also reveal a significant improvement, for medium SNR, of both throughput and packet erasure rate, relatively to conventional ARQ.

Published in:

Communications and Networking (ComNet), 2010 Second International Conference on

Date of Conference:

4-7 Nov. 2010