Networking

Partial Third-Party Information Exchange with Network Coding

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Executive Summary

In this paper, the authors consider the problem of exchanging channel state information in a wireless network such that a subset of the clients can obtain the complete channel state information of all the links in the network. They first derive the minimum number of required transmissions for such partial third-party information exchange problem. They then design an optimal transmission scheme by determining the number of packets that each client should send, and designing a deterministic encoding strategy such that the subset of clients can acquire complete channel state information of the network with minimal number of transmissions. Numerical results show that network coding can efficiently reduce the number of transmissions, even with only pair-wise encoding.

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