Combinatorial Channel Signature Modulation for Wireless ad-hoc Networks

Details Combinatorial Channel Signature Modulation for Wireless ad-hoc Networks Combinatorial Channel Signature Modulation for Wireless ad-hoc Networks

2012-01-26

arxiv.org/abs/1201.5608v1

Computer Science

Information Theory

6 pages, 7 figures, to appear in IEEE International Conference on Communications ICC 2012

Scientific paper

In this paper we introduce a novel modulation and multiplexing method which facilitates highly efficient and simultaneous communication between multiple terminals in wireless ad-hoc networks. We term this method Combinatorial Channel Signature Modulation (CCSM). The CCSM method is particularly efficient in situations where communicating nodes operate in highly time dispersive environments. This is all achieved with a minimal MAC layer overhead, since all users are allowed to transmit and receive at the same time/frequency (full simultaneous duplex). The CCSM method has its roots in sparse modelling and the receiver is based on compressive sampling techniques. Towards this end, we develop a new low complexity algorithm termed Group Subspace Pursuit. Our analysis suggests that CCSM at least doubles the throughput when compared to the state-of-the art.

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