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Energy efficient cooperative transmission in single-relay UWB based body area networks

conference contribution
posted on 2015-09-10, 00:00 authored by Jie Ding, Eryk Dutkiewicz, Xiaojing Huang, Gengfa Fang
Energy efficiency is one of the most critical parameters in ultra-wideband (UWB) based wireless body area networks (WBANs). In this paper, the energy efficiency optimization problem is investigated for cooperative transmission with a single relay in UWB based WBANs. Two practical onbody transmission scenarios are taken into account, namely, along-torso scenario and around-torso scenario. With a proposed single-relay WBAN model, a joint optimal scheme for the energy efficiency optimization is developed, which not only derives the optimal power allocation but also seeks the corresponding optimal relay location for each scenario. Simulation results show that the utilization of a relay node is necessary for the energy efficient transmission in particular for the around-torso scenario and the relay location is an important parameter. With the joint optimal relay location and power allocation, the proposed scheme is able to achieve up to 30 times improvement compared to direct transmission in terms of the energy efficiency when the battery of the sensor node is very limited, which indicates that it is an effective way to prolong the network lifetime in WBANs.

History

Event

IEEE Communications (ICC). International Conference (2015 : London, United Kingdom)

Pagination

1559 - 1564

Publisher

Institute of Electrical and Electronics Engineers (IEEE)

Location

London, United Kingdom

Place of publication

Piscataway, N.J.

Start date

2015-06-08

End date

2015-06-12

ISSN

1550-3607

eISSN

1938-1883

ISBN-13

978-1-4673-6432-4

Language

eng

Publication classification

E1.1 Full written paper - refereed

Copyright notice

2015, IEEE

Title of proceedings

2015 ICC : Proceedings of IEEE International Conference on Communications

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