Performance Analysis of MIMO-STBC Systems over Correlated Fading Channels

The wireless communication services are in great demand nowadays, especially in 5G mobile technologies and beyond. In this frame, multiple-input multiple-output (MIMO) systems have shown a good efficiency by combating the phenomenon of fading as well as enhancing the performance of wireless communication systems. Particularly, MIMO systems with space-time block codes are promised solutions allowing to provide full diversity over coherent flat-fading channels. In this paper, relying on a highly accurate approximate the probability density function of the sum of correlated Weibull distributions, various performance criteria of MIMO-STBC systems undergoing Weibull fading channels are derived in approximate forms, namely outage probability, average capacity, and average symbol error rate. The accuracy of the aforementioned approximate expressions have been corroborated by the Monte-Carlo simulation method. Further, to gain more insights into the system's performance, the impact of the key parameters on the considered MIMO-STBC system reliability are highlighted.