BER Performance Analysis using TCM Coding Over AWGN and Fading Channels

The demands for wireless communication with high data rate is required in many data communication systems. In the most of wireless communications many researches focus on evaluating and improving the systems for high data rate services and spectral efficiency that satisfy higher number of users and better channel capacity requirements. The channel capacity (bandwidth), modulation scheme and coding techniques are the key parameters for evaluating system performance with an improved data rate without increasing the channel bandwidth (Bit/Hz,) which can be achieved for wireless system using orthogonal space-time block code (OSTBC) with recent Multi-Input Multi- Output (MIMO) Systems.This paper focuses on evaluating the performance of the 8-PSK modulation scheme with and without applying the trellis-coded modulation (TCM) coding technique over AWGN, Rayleigh and Rician channels using Multi Input Multi Output (MIMO system to achieve a reasonable Bit Error Rate (BER) performance while the proposed system implements multi antenna diversity of 2x3, where the transmitting antennas are two and the receiving antennas are three.The achieved simulation results in both cases of 8-PSK with and without applying the TCM indicated that a more Eb/No energy is need for the 8-PSK without applying the TCM to get the same BER compared to 8-PSK with TCM coding. Therefore, applying this coding technique improved the performance on average by about 3 dB.