Energy Efficient MISO Collaborative Communication System in AWGN and Rayleigh Fading Channel

Collaborative communication produces high power gain and significantly reduces bit error rate (BER) if both frequency and phase synchronization are achieved. In this paper a MISO collaborative communication system with imperfect phase and frequency synchronization that includes the influence of noise and fading is proposed, modeled, theoretically analyzed and simulated. Mathematical expressions are derived for the received power as a function of number of collaborative nodes and BER as a function of SNR (Eb/N0). Analytical and simulation results showed that the proposed system produces significant power gain and reduction in BER in the presence of phase errors, frequency errors, AWGN and Rayleigh fading. A detailed theoretical analysis and Monte Carlo simulation revealed that the proposed collaborative communication system is an energy efficient communication system with almost linear reduction of the required transmitted power per node as the function of the number of collaborative nodes.