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Vol. 118, Issue 7, July 2010, pp.59-72

 

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Energy Level Performance and Optimum Packet Size in Wireless Sensor Networks in Presence of Rayleigh Fading

 

Arnab Nandi and Sumit Kundu

Department of Electronics and Communication Engineering,

National Institute of Technology, Durgapur

Durgapur- 713209, India

E-mail: nandi_arnab@yahoo.co.in and sumit.kundu@ece.nitdgp.ac.in

 

 

Received: 12 January 2010   /Accepted: 24 July 2010   /Published: 31 July 2010

 

Abstract: Design of an energy efficient wireless sensor network has emerged as an important research challenge. In the present work simulation studies have been carried out to investigate energy level performance of a wireless sensor network for packetized data transmission between two nodes under several network conditions of Rayleigh fading and node spatial density, transmission rate etc. An infinite ARQ (automatic repeat request) model has been considered to assess the impact of fading and other network conditions on energy requirement for successful packet transmission. Further a scheme of variable packet length transmission is investigated for energy requirement. An optimal packet size has been derived which yields maximum energy efficiency. The impact of fading and network conditions on optimal packet size is assessed. Use of optimal packet size shows a significant reduction in energy consumption.

 

Keywords: Rayleigh fading, Optimal packet size, Energy efficiency,

 

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