Omnidirectional Relay in Wireless Networks

Details Omnidirectional Relay in Wireless Networks Omnidirectional Relay in Wireless Networks

2008-11-29

arxiv.org/abs/0812.0038v2

Computer Science

Information Theory

Revised

Scientific paper

For wireless networks with multiple sources, an omnidirectional relay scheme is developed, where each node can simultaneously relay different messages in different directions. This is accomplished by the decode-and-forward relay strategy, with each relay binning the multiple messages to be transmitted, in the same spirit of network coding. Specially for the all-source all-cast problem, where each node is an independent source to be transmitted to all the other nodes, this scheme completely eliminates interference in the whole network, and the signal transmitted by any node can be used by any other node. For networks with some kind of symmetry, assuming no beamforming is to be performed, this omnidirectional relay scheme is capable of achieving the maximum achievable rate.

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