Novel techniques in cooperative wireless networks using network coding

In this paper two novel methods for using network coding in the cooperative networks have been proposed. In the first scheme, network coding generates some redundancy in addition to the redundancy that is generated by the channel code. These redundancies are used in an iterative decoding system at the destination. In the second scheme, the output of the channel encoder in each source node is shortened and transmitted. The relay, by use of the network code, sends a compressed version of the parts missing from the original transmission. This facilitates the decoding procedure at the destination. Simulation based optimizations have been developed and results indicate that in case of the sources with non-identical power level, both scenarios outperform the non-relay case with 3 to 5dB gain.