Open AccessEnergy-Efficiency of Dual-Switched Branch Diversity Receiver in Wireless Sensor Networks
Author(s) -
AL-Suhail
Publication year - 2011
Publication title -
iraqi journal for electrical and electronic engineering/al-maǧallaẗ al-ʻirāqiyyaẗ al-handasaẗ al-kahrabāʼiyyaẗ wa-al-ilikttrūniyyaẗ
Language(s) - English
Resource type - Journals
eISSN - 2078-6069
pISSN - 1814-5892
DOI - 10.37917/ijeee.7.2.8
Subject(s) - fading , efficient energy use , rayleigh fading , computer science , wireless sensor network , diversity gain , network packet , bch code , node (physics) , computer network , cooperative diversity , energy (signal processing) , electronic engineering , channel (broadcasting) , error detection and correction , algorithm , electrical engineering , engineering , mathematics , statistics , structural engineering
In this paper, we develop an analytical energy efficiency model using dual switched branch diversity receiver in wireless sensor networks in fading environments. To adapt energy efficiency of sensor node to channel variations, the optimal packet length at the data link layer is considered. Within this model, the energy efficiency can be effectively improved for switch-and-stay combiner (SSC) receiver with optimal switching threshold. Moreover, to improve energy efficiency, we use error control of Bose-Chaudhuri-Hochquengh (BCH) coding for SSC-BPSK receiver node compared to one of non-diversity NCFSK receiver of sensor node. The results show that the BCH code for channel coding can improve the energy efficiency significantly for long link distance and various values of high energy consumptions over Rayleigh fading channel.