Convolutional Coding in Cooperative Relay Systems with Spread Spectrum

We propose a cooperative convolutional coding scheme that exploits spatial diversity and time diversity simultaneously. The proposed scheme combines the cooperative diversity with spread spectrum that achieves diversity gain with the number of relays and minimum free distance while maintaining an average power the same as the maximum ratio combiner (MRC). The results show that our cooperative convolutional coding improves the system performance significantly over MRC-based cooperative systems.