On the Energy Efficiency of Hybrid Relaying Schemes in the Two-Way Relay Channel

Qi, Y., Imran, M. A. and Tafazolli, R. (2012) On the Energy Efficiency of Hybrid Relaying Schemes in the Two-Way Relay Channel. In: 2012 IEEE Vehicular Technology Conference (VTC Fall), Québec City, Canada, 03-06 Sep 2012, ISBN 9781467318815 (doi: 10.1109/VTCFall.2012.6399179)

Abstract

In this paper, hybrid relaying schemes are investigated in the two-way relay channel, where the relay node is able to adaptively switch between different forwarding schemes based on the current channel state and its decoding status and thus provides more flexibility as well as improved performance. The analysis is conducted from the energy efficiency perspective for two transmission protocols distinguished by whether exploiting the direct link between two main communicating nodes (the source and destination nodes, and vice versa since it is two way communication) or not. A realistic power model taking circuitry power consumption of all involved nodes into account is employed. The energy efficiency is optimized in terms of consumed energy per bit subject to the Quality of Service (QoS) constraint. Numerical results show that the hybrid schemes are able to achieve the highest energy efficiency due to its capability of adapting to the channel variations and the protocol where the direct link is exploited is more energy efficient.

• Item Type: Conference Proceedings
• Additional Information: The research leading to these results has received funding from the European Community's Seventh Framework Programme [FP7/2007-2013] under grant agreement n°247733 - project EARTH.
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Imran, Professor Muhammad
• Authors: Qi, Y., Imran, M. A., and Tafazolli, R.
• College/School: College of Science and Engineering > School of Engineering
• ISSN: 1090-3038
• ISBN: 9781467318815
• Published Online: 31 December 2012
• Copyright Holders: Copyright © 2012 IEEE
• First Published: First published in 2012 IEEE Vehicular Technology Conference (VTC Fall)
• Publisher Policy: Reproduced in accordance with the publisher copyright policy