Practical Wireless Network Coding and Decoding Methods for Multiple Unicast Transmissions

Details Practical Wireless Network Coding and Decoding Methods for Multiple Unicast Transmissions Practical Wireless Network Coding and Decoding Methods for Multiple Unicast Transmissions

2011-10-04

arxiv.org/abs/1110.0594v1

Computer Science

Information Theory

6 pages, 5 figures, Submitted to WCNC 2012, IEEE Wireless Communication and Networking Conference

Scientific paper

We propose a simple yet effective wireless network coding and decoding technique. It utilizes spatial diversity through cooperation between nodes which carry out distributed encoding operations dictated by generator matrices of linear block codes. For this purpose, we make use of greedy codes over the binary field and show that desired diversity orders can be flexibly assigned to nodes in a multiple unicast network, contrary to the previous findings in the literature. Furthermore, we present the optimal detection rule for the given model that accounts for intermediate node errors and suggest a network decoder using the sum-product algorithm. The proposed sum-product detector exhibits near optimal performance.

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