On the energy efficiency of HARQ-IR protocols for wireless network-coded butterfly networks

Vien, Quoc-Tuan, Stewart, Brian G., Choi, Jinho and Nguyen, Huan X. (2013) On the energy efficiency of HARQ-IR protocols for wireless network-coded butterfly networks. 2013 IEEE Wireless Communications and Networking Conference (WCNC 2013) . pp. 2559-2564. ISSN 1525-3511

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Abstract

In this paper, we investigate the energy-delay tradeoff (EDT) of data transmissions in wireless butterfly networks consisting of two source nodes, a relay node and two destination nodes. Two network coding (NC) techniques, namely physical-layer NC (PLNC) and analog NC (ANC), are exploited to reduce the number of transmissions at the relay by half. Additionally, hybrid automatic repeat request with incremental redundancy (HARQ-IR) is applied to assure the reliability of data transmissions in wireless network-coded butterfly networks (WNCBNs). By deriving the EDT of both PLNC and ANC schemes in WNCBNs, we evaluate not only their energy efficiency, but also the effectiveness of the relay positions in WNCBNs. It is found that the PLNC scheme is more energy efficient than both the ANC and direct transmission (DT) schemes when the relay is located either at the centre or close to the destinations. In addition, it is shown that both the PLNC and ANC schemes are shown to be less energy efficient than the DT scheme when the relay is located near the sources.

Item Type: Article
Keywords (uncontrolled): Data communication; protocols; relays; reliability; signal to noise ratio; silicon; wireless communication
Research Areas: A. > School of Science and Technology > Computer Science > SensoLab group
A. > School of Science and Technology > Computer and Communications Engineering
Item ID: 11760
Useful Links:
Depositing User: Quoc-Tuan Vien
Date Deposited: 23 Aug 2013 07:01
Last Modified: 13 Oct 2016 14:28
URI: https://eprints.mdx.ac.uk/id/eprint/11760

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