Power allocation in repetition time diversity hybrid automatic repeat request feedback
Paper i 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

Författare

Behrooz Makki

Chalmers, Signaler och system, Kommunikationssystem, informationsteori och antenner, Kommunikationssystem

Alexandre Graell i Amat

Chalmers, Signaler och system, Kommunikationssystem, informationsteori och antenner, Kommunikationssystem

Thomas Eriksson

Chalmers, Signaler och system, Kommunikationssystem, informationsteori och antenner, Kommunikationssystem

IEEE Wireless Communications and Networking Conference, WCNC

15253511 (ISSN)

2329-2334 6214182

Ämneskategorier

Elektroteknik och elektronik

DOI

10.1109/WCNC.2012.6214182

ISBN

978-146730437-5