Nattkorn Promwongsa and Teerapat Sanguakotchakorn
Asian Institut 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
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