Analyzing BER Performance of 2x2, 3x3 and 4x4 MIMO Concatenated 8-PSK with and Without TCM Coding over Fading Channel Using Simulation Method

M-ary Phase Shift Keying (M-ary PSK) is a critical digital modulation scheme used in modern wireless communication systems. It is considered one of the most important M-ary carrier techniques, as it efficiently transmits digital data over wireless channels. The utilization of a single symbol to encode multiple bits of data is instrumental in achieving enhanced data rates and spectral efficiency. This attribute plays a pivotal role in bolstering system performance and optimizing data rates without the need for expanding channel bandwidth. A modern technique employed in wireless communication systems, specifically multi-input multi-output (MIMO) systems, involves the use of orthogonal space-time block codes (OSTBC) to accomplish this objective. This work focuses on 2x2, 3x3 and 4x4 (MIMO systems concatenated with 8- phase shift keying (8-PSK) modulation, with and without trellis-coded modulation (TCM) coding. The performance of these systems is evaluated using simulation method. The results can guide the development of more efficient and reliable wireless communication systems. Therefore, the achieved outcome of 8-PSK modulation with TCM demonstrates superior Bit Error Rate (BER) performance when compared to employing uncoded 8-PSK.