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Energy-efficient dynamic resource allocation for opportunistic-relaying-assisted SC-FDMA using turbo-equalizer-aided soft decode-and-forward

Zhang, Jiayi, Yang, Lie-Liang and Hanzo, Lajos (2013) Energy-efficient dynamic resource allocation for opportunistic-relaying-assisted SC-FDMA using turbo-equalizer-aided soft decode-and-forward IEEE Transactions on Vehicular Technology, 62, pp. 235-246.

Record type: Article

Abstract

In this paper, we exploit the benefits of the diversity gains that arise from a cluster of opportunistic relays (ORs) and from the independently fading subcarriers of multiple users. Our goal is to improve the energy efficiency of the decode-and-forward-based OR-assisted single-carrier frequency-division multiple-access (SC-FDMA) uplink, where the direct transmission (DT) link is unavailable. We proposed two joint dynamic resource allocation (JDRA) schemes by assuming that the pilot-aided channel-quality information (CQI) of all the users may be exchanged. Furthermore, we take the following two main aspects into account: 1) “First-hop quality awareness” (FHQA) for JDRA-aided OR and 2) “buffering delay awareness” in the context of interleaver-aided channel-coded systems. In addition, frequency-domain turbo equalizers are employed in both the relay and BS’s receivers. Our results demonstrate that, compared to the DT benchmarker, the proposed FHQA JDRA schemes can achieve an energy reduction gain of 91% for a single-antenna base station (BS) receiver and up to 7.4% for a multiantenna BS when considering the energy consumption due to CQI exchange among relays.

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More information

Published date: January 2013
Organisations: Southampton Wireless Group

Identifiers

Local EPrints ID: 343486
URI: http://eprints.soton.ac.uk/id/eprint/343486
ISSN: 0018-9545
PURE UUID: 9686e49f-f290-4dad-be1b-d0d86f0ece03
ORCID for Lie-Liang Yang: ORCID iD orcid.org/0000-0002-2032-9327

Catalogue record

Date deposited: 03 Oct 2012 09:08
Last modified: 17 Aug 2017 16:34

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Contributors

Author: Jiayi Zhang
Author: Lie-Liang Yang ORCID iD
Author: Lajos Hanzo

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