Network coding-based block acknowledgement scheme for wireless regenerative relay networks

Vien, Quoc-Tuan and Nguyen, Huan X. and Choi, Jinho and Stewart, Brian G. and Tianfield, Huaglory (2012) Network coding-based block acknowledgement scheme for wireless regenerative relay networks. IET Communications, 6 (16). pp. 2593-2601. ISSN 1751-8636

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Official URL: http://dx.doi.org/10.1049/iet-com.2011.0681

Abstract

This study is concerned with block acknowledgement (ACK) mechanisms in wireless regenerative relay networks. In an N-relay network, a total of (2N + 1) block ACK packets is required to acknowledge the data transmission between source and destination nodes via the N-relay nodes. In this study, the authors propose a block ACK scheme based on network coding (NC) to significantly reduce the ACK overheads by N block ACK packets. In addition, this achieves a reduction of N(N–1) computational operators. Particularly, we derive the error probability of the determination of the packets to be retransmitted at the source and relays, which shows that the NC-based scheme also improves the reliability of block ACK transmissions. Furthermore, asymptotic signal-to-noise (SNR) scenarios for forward links are considered and a general expression of error probability in multi-relay networks is derived for each SNR scenario. Finally, simulation results are presented to verify the analytical findings and demonstrate a lower number of data retransmissions for a higher system throughput.

Item Type:Article
Keywords (uncontrolled):Block acknowledgement; network coding; wireless relay network
Research Areas:School of Science and Technology > Science & Technology
ID Code:9471
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Deposited On:08 Nov 2012 14:52
Last Modified:20 Jul 2014 06:12

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