IEICE Trans - Cumulative Decision Feedback Technique for Energy Constrained Wireless Sensor Networks

Cumulative Decision Feedback Technique for Energy Constrained Wireless Sensor Networks

Gabriel PORTO VILLARDI  Giuseppe THADEU FREITAS DE ABREU  Ryuji KOHNO

Publication
IEICE TRANSACTIONS on Communications   Vol.E91-B    No.11    pp.3768-3774
Publication Date: 2008/11/01
Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e91-b.11.3768
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Terrestrial Radio Communications
Keyword:
sensor networks,  decision feedback,  FEC,  packet combining,  energy efficiency,

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Summary:
The application of Cumulative Decision Feedback (DF) technique for energy/complexity constrained Wireless Sensor Networks (WSN) is considered. Theoretical bit error probability and average rate of a BPSK modulated DF are derived together with PHY-MAC layers' energy efficiency model for DF and Forward Error Correction (FEC) techniques. Moreover, an empirical optimization, which in turn relies upon a low complexity SNR estimation method also derived in this letter, is applied to the DF technique in order to obtain maximum energy efficiency.