Symbol Error Rate Performance of Hybrid DF/AF Relaying Protocol Using Particle Swarm Optimization Based Power Allocation

Cooperative communications technique receive a lot of interest, to combat frequency selectivity fading of wireless channels. Cooperative protocols are used to increase the total capacity, Signal to Noise Ratio (SNR) and reduced the Symbol Error Rate (SER) in wireless communication systems. The performance of Particle Swarm Optimization (PSO) based Power Allocation (PA) for Proposed Hybrid Decode and Forward (DF)/Amplify and Forward (AF) Relaying Protocol using Maximal Ratio Combining (MRC) technique with Mary-Phase Shift Keying (M-PSK) Modulation over Rayleigh fading and Rician fading is presented in this paper. The results are compared with exiting AF and DF relaying protocols. Hybrid DF/AF Relaying Protocol achieves reduced SER compared to the existing AF and DF relaying protocol.