Mobility Investigate

Approximate Capacity of the Symmetric Half-Duplex Gaussian Butterfly Network

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Executive Summary

The wireless butterfly network is a canonical scenario where network coding improves throughput compared to routing. It is one of the basic coding configurations exploited in COPE, a practical network coding protocol shown experimentally to be able to double or triple throughput in 802.11 mesh networks. In this network the source node Si, i = 1, 2 wishes to communicate to the destination node Di, i = 1, 2 simultaneously utilizing the relay R. The traditional wireless network coding model assumes unit capacity broadcast links that are operated orthogonally, with error-free decoding on each link.

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