Outage Probability Analysis of Multi-Relay Delay-Limited Hybrid-ARQ Channels
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Date
2010
Authors
Maham, Behrouz
Hjorungnes, Are
Debbah, Merouane
Journal Title
Journal ISSN
Volume Title
Publisher
2010 IEEE 72nd Vehicular Technology Conference - Fall
Abstract
We consider a wireless relay network with with hybrid-automatic retransmission request (HARQ) and Rayleigh fading channels. In this paper, we analyze the outage probability of the multi-relay delay-limited HARQ system with opportunistic relaying scheme in decode-and-forward mode. A simple and distributed relay selection strategy is proposed for multi-relay HARQ channels. Then, we analyze the performance of the system. We first derive the cumulative density function (CDF) and probability density function (PDF) of the selected relay channels. Then, the CDF and PDF are used to determine the outage probability in the l-th round of HARQ. The packet delay constraint is represented by L, the maximum number of HARQ rounds. Furthermore, closed-form upper-bounds on outage probability are derived, which are used to investigate the diversity order of the system. Based on the derived upper-bound expressions, it is shown that the proposed schemes achieve the full spatial diversity order of N + 1, where N is the number of potential relays. Our analytical results are confirmed by simulation results.
Description
Keywords
Relays, Approximation methods, Random variables, Signal to noise ratio, Fading, Protocols, Simulation
Citation
Behrouz Maham, Are Hjørungnes, and Mérouane Debbah; 2010; Outage Probability Analysis of Multi-Relay Delay-Limited Hybrid-ARQ Channels; 2010 IEEE 72nd Vehicular Technology Conference - Fall; http://nur.nu.edu.kz/handle/123456789/2016