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Wireless Multicast Relay Networks with Limited-Rate Source-Conferencing

The authors investigate capacity bounds for a wireless multicast relay network where two sources simultaneously multicast to two destinations with the help of a full-duplex relay node. The two sources and the relay use the same channel resources (i.e. co-channel transmission). They assume Gaussian channels with time-invariant channel gains which are known by all nodes. The two source nodes are connected by orthogonal limited-rate error-free conferencing links. By extending the proof of the converse for the Gaussian relay channel and introducing two lemmas on conditional (co-)variance, they present two genie-aided outer bounds of the capacity region for this multicast relay network. They extend noisy network coding to use source cooperation with the help of the theory of network equivalence.

Provided by: Institute of Electrical & Electronic Engineers Topic: Mobility Date Added: Oct 2012 Format: PDF

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