Hybrid-ARQ in Multihop Networks with Opportunistic Relay Selection

Details Hybrid-ARQ in Multihop Networks with Opportunistic Relay Selection Hybrid-ARQ in Multihop Networks with Opportunistic Relay Selection

2007-04-05

arxiv.org/abs/0704.0802v1

Computer Science

Information Theory

4 pages, 5 figures, to appear in Proceedings of the 2007 International Conference on Acoustics, Speech, and Signal Processing

Scientific paper

This paper develops a contention-based opportunistic feedback technique towards relay selection in a dense wireless network. This technique enables the forwarding of additional parity information from the selected relay to the destination. For a given network, the effects of varying key parameters such as the feedback probability are presented and discussed. A primary advantage of the proposed technique is that relay selection can be performed in a distributed way. Simulation results find its performance to closely match that of centralized schemes that utilize GPS information, unlike the proposed method. The proposed relay selection method is also found to achieve throughput gains over a point-to-point transmission strategy.

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