Error performance of Transmit Antenna Selection / Maximal Ratio Combining in two hop Amplify-and-Forward relay system over Rayleigh fading channel

In this paper, performance of Transmit Antenna Selection / Maximal Ratio Combining (TAS / MRC) in two hop Amplify-and-Forward (AF) relay system is analyzed over frequency non-selective and slowly Rayleigh fading channel. In the system, all nodes are equipped with multiple antennas; TAS is employed at the source and relay for transmission, MRC is employed at the relay and destination for reception. The source and destination communicate by the help of single relay and source-destination link is not available. In this paper, we derive closed form Cumulative Distribution Function (CDF) and Moment Generating Function (MGF) of received Signal-to-Noise-Ratio (SNR). We also derive Symbol Error Probability (SEP) expressions for the considered system. Analytical results are validated by the simulations.