Performance study of hybrid decode-amplify-forward (HDAF) scheme in distributed Alamouti coded cooperative network

In this paper, a SNR based hybrid decode amplify forward (HDAF) scheme in a distributed Alamouti coded cooperative network is proposed. Considering a flat Rayleigh fading channel environment, the matlab simulation and analysis are carried out. In the cooperative scheme, two relays are employed, where each relay is transmitting each row Alamouti code. The selection of SNR threshold depends on the target rate information. The closed form expressions of SER and the outage probability with tight upper bounds are derived and compared with the simulation done in Matlab environment. Further the impact of relay location on the SER performance is analyzed. It is observed that the proposed hybrid relaying technique outperforms the individual AF and DF ones in the distributed Alamouti coded cooperative network.

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