A Joint Network and Channel Coding Scheme for Cooperative Relay Networks

To obtain better cooperative diversity on relay networks. A joint network and channel coding (JNCC) scheme based on turbo codes and corresponding iterative decoding strategy are proposed for uplink multiple-access relay channel (MARC) systems. The proposed scheme is considered by using different processing ways for different users and turbo network coding for the relay where only the extra redundancy is forwarded by the relay, designing iterative decoding strategy at destination to achieve the improvement of bit error rate (BER) performance. By doing this, a better error correction capability is embedded to the proposed JNCC scheme providing a better help to the destination when decoding different users original messages. Simulation results demonstrate that the proposed scheme substantially improves the BER performance to the referenced schemes in AWGN and Rayleigh fading channels respectively.