Information theoretic analysis of hybrid-ARQ protocols in coherent free-space optical systems

Sahar Molla Aghajanzadeh; Murat Uysal

doi:10.1109/TCOMM.2012.030712.110409

Information theoretic analysis of hybrid-ARQ protocols in coherent free-space optical systems

Sahar Molla Aghajanzadeh, Murat Uysal

Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

Automatic retransmission request (ARQ) is a feedback-based data link layer technique which enhances the reliability of communication in fading channels. In this paper, we investigate the performance of hybrid-ARQ (H-ARQ) techniques in coherent free-space optical (FSO) communication systems over atmospheric turbulence-induced fading channels. Under the assumption of a Gamma-Gamma statistical fading channel model, we derive outage probability and throughput expressions for three H-ARQ protocols. We further characterize the outage performance at high values of signal-to-noise-ratio (SNR) through diversity and coding gains. Our results provide insight into the performance mechanisms of different H-ARQ protocols in coherent FSO systems and demonstrate that significant performance gains can be achieved through the deployment of H-ARQ particularly in the strong turbulence regime.

Original language	English (US)
Article number	6168189
Pages (from-to)	1432-1442
Number of pages	11
Journal	IEEE Transactions on Communications
Volume	60
Issue number	5
DOIs	https://doi.org/10.1109/TCOMM.2012.030712.110409
State	Published - May 2012

Keywords

Automatic retransmission request
Free-space optical communications
Outage probability
Throughput
Turbulence-induced fading

ASJC Scopus subject areas

Electrical and Electronic Engineering

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10.1109/TCOMM.2012.030712.110409

Cite this

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title = "Information theoretic analysis of hybrid-ARQ protocols in coherent free-space optical systems",

abstract = "Automatic retransmission request (ARQ) is a feedback-based data link layer technique which enhances the reliability of communication in fading channels. In this paper, we investigate the performance of hybrid-ARQ (H-ARQ) techniques in coherent free-space optical (FSO) communication systems over atmospheric turbulence-induced fading channels. Under the assumption of a Gamma-Gamma statistical fading channel model, we derive outage probability and throughput expressions for three H-ARQ protocols. We further characterize the outage performance at high values of signal-to-noise-ratio (SNR) through diversity and coding gains. Our results provide insight into the performance mechanisms of different H-ARQ protocols in coherent FSO systems and demonstrate that significant performance gains can be achieved through the deployment of H-ARQ particularly in the strong turbulence regime.",

keywords = "Automatic retransmission request, Free-space optical communications, Outage probability, Throughput, Turbulence-induced fading",

author = "Aghajanzadeh, {Sahar Molla} and Murat Uysal",

note = "Funding Information: The work of M. Uysal is supported, in part, by the Marie Curie International Reintegration Grant (PIRG07-GA-2010-268318) and, in part, by the Turkish National Academy of Sciences Distinguished Young Scientist Award Program (TUBA GEBIP). Digital Object Identifier 10.1109/TCOMM.2012.030712.110409",

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AU - Uysal, Murat

N1 - Funding Information: The work of M. Uysal is supported, in part, by the Marie Curie International Reintegration Grant (PIRG07-GA-2010-268318) and, in part, by the Turkish National Academy of Sciences Distinguished Young Scientist Award Program (TUBA GEBIP). Digital Object Identifier 10.1109/TCOMM.2012.030712.110409

PY - 2012/5

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N2 - Automatic retransmission request (ARQ) is a feedback-based data link layer technique which enhances the reliability of communication in fading channels. In this paper, we investigate the performance of hybrid-ARQ (H-ARQ) techniques in coherent free-space optical (FSO) communication systems over atmospheric turbulence-induced fading channels. Under the assumption of a Gamma-Gamma statistical fading channel model, we derive outage probability and throughput expressions for three H-ARQ protocols. We further characterize the outage performance at high values of signal-to-noise-ratio (SNR) through diversity and coding gains. Our results provide insight into the performance mechanisms of different H-ARQ protocols in coherent FSO systems and demonstrate that significant performance gains can be achieved through the deployment of H-ARQ particularly in the strong turbulence regime.

AB - Automatic retransmission request (ARQ) is a feedback-based data link layer technique which enhances the reliability of communication in fading channels. In this paper, we investigate the performance of hybrid-ARQ (H-ARQ) techniques in coherent free-space optical (FSO) communication systems over atmospheric turbulence-induced fading channels. Under the assumption of a Gamma-Gamma statistical fading channel model, we derive outage probability and throughput expressions for three H-ARQ protocols. We further characterize the outage performance at high values of signal-to-noise-ratio (SNR) through diversity and coding gains. Our results provide insight into the performance mechanisms of different H-ARQ protocols in coherent FSO systems and demonstrate that significant performance gains can be achieved through the deployment of H-ARQ particularly in the strong turbulence regime.

KW - Automatic retransmission request

KW - Free-space optical communications

KW - Outage probability

KW - Throughput

KW - Turbulence-induced fading

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Information theoretic analysis of hybrid-ARQ protocols in coherent free-space optical systems

Abstract

Keywords

ASJC Scopus subject areas

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