Power allocation in repetition time diversity hybrid automatic repeat request feedback
Paper in proceeding, 2012
This paper addresses the problem of optimal power allocation for hybrid automatic repeat request (HARQ) feedback over slowly-fading channels. We mainly focus on the repetition time diversity HARQ scheme where the results are obtained for both continuous and bursting communication models. Moreover, the effect of an outage probability constraint on the system data transmission efficiency is studied under different transmission power constraints. Simulation results show that 1) for Nakagami fading channels, the optimal HARQ-based (re)transmission powers maximizing the system throughput should be decreasing in every (re)transmission round, 2) higher rates are achieved in the continuous communication, when compared with the bursting model, and 3) HARQ feedback leads to considerable performance improvement even in outage-limited conditions.
Performance improvements
System throughput
Power allocations
Communication models
Outage probability
Nakagami fading channel
Optimization
Wireless telecommunication systems
Fading channels
Hybrid automatic repeat request
Data transmission efficiency
Information theory
Data communication systems
Error correction
Outages
Transmission power constraints
Optimal power allocation
Communication
Repetition time
Author
Behrooz Makki
Chalmers, Signals and Systems, Communication, Antennas and Optical Networks
Alexandre Graell i Amat
Chalmers, Signals and Systems, Communication, Antennas and Optical Networks
Thomas Eriksson
Chalmers, Signals and Systems, Communication, Antennas and Optical Networks
IEEE Wireless Communications and Networking Conference, WCNC
15253511 (ISSN)
2329-2334 6214182978-146730437-5 (ISBN)
Subject Categories
Electrical Engineering, Electronic Engineering, Information Engineering
DOI
10.1109/WCNC.2012.6214182
ISBN
978-146730437-5