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

Vien, Quoc-Tuan ORCID:, Nguyen, Huan X. ORCID:, Choi, Jinho, 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 (doi:10.1049/iet-com.2011.0681)

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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: A. > School of Science and Technology > Computer Science > SensoLab group
A. > School of Science and Technology > Computer and Communications Engineering
Item ID: 9471
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Depositing User: Dr Huan Xuan Nguyen
Date Deposited: 08 Nov 2012 14:52
Last Modified: 01 Jun 2019 09:42

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