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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,
Full Text: PDF(191KB)>>
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.
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