Efficient ARQ retransmission schemes for two-way relay networks.

Vien, Quoc-Tuan and Tran, Le-Nam and Nguyen, Huan X. (2011) Efficient ARQ retransmission schemes for two-way relay networks. Journal of Communication Software and Systems, 7 (1). ISSN 1845-6421

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Abstract

In this paper, we investigate different practical automatic repeat request (ARQ) retransmission protocols for two-way wireless relay networks based on network coding (NC). The idea of NC is applied to increase the achievable throughput for the exchange of information between two terminals through one relay. Using NC, throughput efficiency is significantly improved due to the reduction of the number of retransmissions. Particularly, two improved NC-based ARQ schemes are designed based on go-back-N and selective-repeat (SR) protocols. The analysis of throughput efficiency is then carried out to find the best retransmission strategy for different scenarios. It is shown that the combination of improved NC-based SR ARQ scheme in the broadcast phase and the traditional SR ARQ scheme in the multiple access phase achieves the highest throughput efficiency compared to the other combinations of ARQ schemes. Finally, simulation results are provided to verify the theoretical analysis.

Item Type:Article
Research Areas:Science & Technology > Science & Technology
ID Code:7676
Permissions granted by publisher:Post refereed version as permitted by publisher, but embargoed until published.
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Deposited On:19 Apr 2011 09:24
Last Modified:06 Feb 2013 11:34

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