Volume 10, Number 5

Packet Size Optimization for Energy Efficiency in Multipath Fading for Wireless Body Area Network

  Authors

Nattkorn Promwongsa and Teerapat Sanguakotchakorn , Asian Institute of Technology, Thailand

  Abstract

Recently, Wireless Body Area Network (WBAN) has drawn vast interest to many researchers due to its potential in healthcare and medical fields. In this paper, we propose the energy efficiency model of Time Diversity communication in Rician and Rayleigh fading channels emphasizing the optimal packet size. The optimal packet size to maximize energy efficiency is investigated for on-body and in-body channels. Four modulation techniques are considered including the recently proposed 16-ary Quadrature Amplitude Position Modulation (QAPM). In addition, the closed-form expression of the energy efficiency model in multipath fading is derived. Here, three evaluation metrics including the energy efficiency, the normalized throughput and the average end-to-end delay are adopted and compared to the existing 1-hop and Cooperative communications as well as our previously proposed 2-hop communication. The results show that our proposed Time Diversity communication scheme outperforms the existing ones in deep fading channel except for the average end-to-end delay.

  Keywords

Packet Size Optimization, Energy Efficiency, 2-hop, Time Diversity, Multipath Fading, Wireless Body Area Network