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Relay Switching Aided Turbo Coded Hybrid-ARQ for Correlated Fading Channel

Relay Switching Aided Turbo Coded Hybrid-ARQ for Correlated Fading Channel
Relay Switching Aided Turbo Coded Hybrid-ARQ for Correlated Fading Channel
Hybrid-Automatic-Repeat-reQuest (HARQ) has become an indispensable technique in reliable communications systems. However, its performance is inevitably affected by the channel’s fading correlation. In this paper, we proposed a novel relay-switching aided HARQ scheme in order to mitigate the detrimental effects of correlated fading without unduly increasing the system’s complexity and delay. Our results show that the proposed relay-switching regime operates efficiently in correlated channels, hence significantly reduces the error floor of turbo-coded HARQ. Additionally, a HARQ scheme using Segment Selective Repeat (SSR) is incorporated in the relay-switching scheme for achieving further improvements. Quantitatively, the proposed relay-switching aided turbo-coded HARQ scheme using SSR may achieve an approximately 2 dB gain, compared to the conventional amplify-and-forward aided turbo coded HARQ arrangement using Chase Combining. Index Terms - Relay switching, correlated fading channel, Hybrid-ARQ, turbo codes, chase combining, incremental redundancy, selective segment repeat.
978-1-61284-255-4
1706-1711
Ngo, Hoang Anh
c7839dbb-8b72-4376-9f70-0ab7dd5ce400
Maunder, Robert
76099323-7d58-4732-a98f-22a662ccba6c
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
Ngo, Hoang Anh
c7839dbb-8b72-4376-9f70-0ab7dd5ce400
Maunder, Robert
76099323-7d58-4732-a98f-22a662ccba6c
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1

Ngo, Hoang Anh, Maunder, Robert and Hanzo, Lajos (2011) Relay Switching Aided Turbo Coded Hybrid-ARQ for Correlated Fading Channel At 2011 IEEE Wireless Communications and Networking Conference (WCNC), Mexico. 28 - 31 Mar 2011. , pp. 1706-1711.

Record type: Conference or Workshop Item (Paper)

Abstract

Hybrid-Automatic-Repeat-reQuest (HARQ) has become an indispensable technique in reliable communications systems. However, its performance is inevitably affected by the channel’s fading correlation. In this paper, we proposed a novel relay-switching aided HARQ scheme in order to mitigate the detrimental effects of correlated fading without unduly increasing the system’s complexity and delay. Our results show that the proposed relay-switching regime operates efficiently in correlated channels, hence significantly reduces the error floor of turbo-coded HARQ. Additionally, a HARQ scheme using Segment Selective Repeat (SSR) is incorporated in the relay-switching scheme for achieving further improvements. Quantitatively, the proposed relay-switching aided turbo-coded HARQ scheme using SSR may achieve an approximately 2 dB gain, compared to the conventional amplify-and-forward aided turbo coded HARQ arrangement using Chase Combining. Index Terms - Relay switching, correlated fading channel, Hybrid-ARQ, turbo codes, chase combining, incremental redundancy, selective segment repeat.

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More information

Published date: March 2011
Venue - Dates: 2011 IEEE Wireless Communications and Networking Conference (WCNC), Mexico, 2011-03-28 - 2011-03-31
Organisations: Southampton Wireless Group

Identifiers

Local EPrints ID: 272168
URI: http://eprints.soton.ac.uk/id/eprint/272168
ISBN: 978-1-61284-255-4
PURE UUID: 90871b93-cb62-40c7-9457-82538a5c5c14
ORCID for Robert Maunder: ORCID iD orcid.org/0000-0002-7944-2615
ORCID for Lajos Hanzo: ORCID iD orcid.org/0000-0002-2636-5214

Catalogue record

Date deposited: 11 Apr 2011 10:38
Last modified: 07 Oct 2017 11:38

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Contributors

Author: Hoang Anh Ngo
Author: Robert Maunder ORCID iD
Author: Lajos Hanzo ORCID iD

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