Adaptive Space-Time Coding using ARQ
Journal article, 2015
We study the energy-limited outage probability of the block space-time coding (STC)-based systems utilizing automatic repeat request (ARQ) feedback and adaptive power allocation. Taking the ARQ feedback costs into account, we derive closed-form solutions for the energy-limited optimal power allocation and investigate the diversity gain of different STCARQ schemes. Also, sufficient conditions are derived for the usefulness of ARQ, in terms of energy-limited outage probability. The results show that, for a large range of feedback costs, the energy efficiency is substantially improved by the combination of ARQ and STC techniques, if optimal power allocation is utilized.
Automatic repeat request (ARQ)
green communication
outage probability
power allocation
space-time coding
feedback cost
Author
Behrooz Makki
Chalmers, Signals and Systems, Communication, Antennas and Optical Networks
Tommy Svensson
Chalmers, Signals and Systems, Communication, Antennas and Optical Networks
Thomas Eriksson
Chalmers, Signals and Systems, Communication, Antennas and Optical Networks
Mohamed-Slim Alouini
King Abdullah University of Science and Technology (KAUST)
IEEE Transactions on Vehicular Technology
0018-9545 (ISSN) 1939-9359 (eISSN)
Vol. 64 9 4331-4337 6918481Areas of Advance
Information and Communication Technology
Subject Categories
Telecommunications
Communication Systems
Signal Processing
DOI
10.1109/TVT.2014.2362173