A Practical Scheme for Relaying in Sensor Networks Using Repeat-Accumulate Codes

Andrew Eckford, Raviraj Adve
2006 2006 40th Annual Conference on Information Sciences and Systems  
Given limitations with current technology, nodes in a sensor network have stringent energy and complexity constraints. This paper presents a scheme for cooperation via relaying and error-control coding in sensor networks, using punctured systematic repeat-accumulate codes. Assuming knowledge of the source-relay channel quality, we use density evolution to show that the proposed scheme achieves good performance and a good energy tradeoff despite low computational complexity. An interesting
more » ... n interesting additional benefit of such a scheme is the notion of fractional cooperation by a relay node. As a motivating example, we analyze networks of up to ten cooperating nodes in Rayleigh fading, which communicate with a more sophisticated receiver.
doi:10.1109/ciss.2006.286497 fatcat:2uun7u5mtzbmjfjf7erwmbb27u