Cooperative retransmission for wireless regenerative multirelay networks

Vien, Quoc-Tuan and Stewart, Brian G. and Tianfield, Huaglory and Nguyen, Huan X. (2013) Cooperative retransmission for wireless regenerative multirelay networks. IEEE Transactions on Vehicular Technology, 62 (2). pp. 735-747. ISSN 0018-9545

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Abstract

This paper investigates retransmission (RT) mechanisms in wireless regenerative multirelay networks. Conventionally, the RT can be realized in a cooperative manner with the assistance of all available relays. However, this may result in high overall power consumption due to the RT of the same packets across the nodes, particularly when the number of relays is large. We propose a cooperative RT (CR) scheme based on relay cooperation (RC) and binary xor operations to significantly reduce the number of packets retransmitted to produce a more power-efficient system with nonoverlapped RTs. Significantly, we also derive the error probability of RT decisions at the source and relays and show that the proposed CR scheme improves the reliability of the RTs. Furthermore, by deriving the average number of packets to be retransmitted at the source and relays, we not only show that the proposed CR scheme reduces the number of RTs and removes overlapped retransmitted packets but determine the optimized number of relays used for the RT phase as well. Finally, simulation results are presented to demonstrate the validity of the analytical expressions.

Item Type: Article
Research Areas: A. > School of Science and Technology > Computer Science > SensoLab group
A. > School of Science and Technology > Computer and Communications Engineering
Item ID: 12058
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Depositing User: Users 3197 not found.
Date Deposited: 26 Sep 2013 13:40
Last Modified: 06 Dec 2016 07:51
URI: http://eprints.mdx.ac.uk/id/eprint/12058

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