An energy-efficient communication scheme for wireless networks: A redundant radix-based approach

Koushik Sinha, Bhabani P. Sinha, Debasish Datta

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

We propose a redundant radix based number (RBN) representation for encoding and transmitting data for applications which typically utilize low cost devices and demand low power operations with simple modulation techniques like ASK, OOK and FSK. Coupled with silent periods for communicating the digit zero, this encoded communication scheme, called as RBNSiZeComm, provides a highly energy-efficient technique for data transmission. Considering an n-bit data representation and assuming that each of the 2n binary strings is equally likely to occur, theoretically obtainable fraction of energy savings by using our proposed RBNSiZeComm transmission protocol is, on an average, 1 - n+2/4n. A hybrid modulation scheme using FSK and ASK with non-coherent detection based receiver for the RBNSiZeComm protocol has been presented. Assuming equal likelihood of all possible binary strings of a given length, there is nearly 53% savings in energy on an average at the transmitter relative to binary FSK, over additive white gaussian noise (AWGN) channels. Simulation results demonstrate that compared to binary FSK, our proposed implementation can extend the battery life of devices from about 33% to 62% on an average in applications like remote healthcare and wireless sensor networks for agriculture.

Original languageEnglish
Article number5668478
Pages (from-to)550-559
Number of pages10
JournalIEEE Transactions on Wireless Communications
Volume10
Issue number2
DOIs
Publication statusPublished - 1 Feb 2011
Externally publishedYes

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Keywords

  • Energy-efficient communication
  • redundant binary number. system
  • silent symbol communication
  • wireless sensor networks

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Computer Science Applications
  • Applied Mathematics

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