The distance–power consumption trade–off with the optimal number of relays for cooperative Wireless Sensor Networks. (24th February 2012)

• Record Type: Journal Article
• Authors: Joe, Inwhee; Chung, Sungmoon
• Is Part Of: International journal of ad hoc and ubiquitous computing. Volume 9:Number 2(2012)
• Page Start: 104
• Page End: 110
• Publication Date: 2012-02-24
• Subjects: cooperative communication -- diversity -- power consumption -- cooperative WSNs -- wireless sensor networks -- cooperation -- source–to–destination distance -- data rate; Ubiquitous computing -- Periodicals; Embedded computer systems -- Periodicals; Electronic data processing -- Distributed processing -- Periodicals; Wireless communication systems -- Periodicals; Computer architecture -- Periodicals; 004.2
• Languages: English
• ISSNs: 1743-8225

Abstract

Cooperative communication allows achieving the effects of the virtual MIMO, so that diversity gain can be obtained from just one antenna for each node. However, conventional cooperative communication causes lower data rates as diversity gain increases. In addition, increasing the number of relays makes networks consume more power. This is one of the most important issues for cooperative Wireless Sensor Networks (WSNs). Therefore, we propose an appropriate system model to achieve the optimal number of relays in terms of power consumption by studying the trade–off between the distance (from source to destination) and power consumption in consideration of the data rate.