Energy efficiency analysis in amplify-and-forward and decode-and-forward cooperative networks

Research output: Chapter in Book/Report/Conference proceedingConference contribution

37 Scopus citations

Abstract

In this paper, we have studied the energy efficiency of cooperative networks operating in either the fixed Amplify-and-Forward (AF) or the selective Decode-and-Forward (DF) mode. We consider the optimization of the M-ary quadrature amplitude modulation (MQAM) constellation size to minimize the bit energy consumption under given bit error rate (BER) constraints. In the computation of the energy expenditure, the circuit, transmission, and retransmission energies are taken into account. The link reliabilities and retransmission probabilities are determined through the outage probabilities under the Rayleigh fading assumption. Several interesting observations with practical implications are made. For instance, it is seen that while large constellations are preferred at small transmission distances, constellation size should be decreased as the distance increases. Moreover, the cooperative gain is computed to compare direct transmission and cooperative transmission.

Original languageEnglish (US)
Title of host publication2010 IEEE Wireless Communications and Networking Conference, WCNC 2010 - Proceedings
DOIs
StatePublished - 2010
EventIEEE Wireless Communications and Networking Conference 2010, WCNC 2010 - Sydney, NSW, Australia
Duration: Apr 18 2010Apr 21 2010

Publication series

NameIEEE Wireless Communications and Networking Conference, WCNC
ISSN (Print)1525-3511

Other

OtherIEEE Wireless Communications and Networking Conference 2010, WCNC 2010
CountryAustralia
CitySydney, NSW
Period4/18/104/21/10

ASJC Scopus subject areas

  • Engineering(all)

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    Chen, Q., & Gursoy, M. C. (2010). Energy efficiency analysis in amplify-and-forward and decode-and-forward cooperative networks. In 2010 IEEE Wireless Communications and Networking Conference, WCNC 2010 - Proceedings [5506531] (IEEE Wireless Communications and Networking Conference, WCNC). https://doi.org/10.1109/WCNC.2010.5506531