In this paper we present the performance estimation for mobile environment wideband radio channel based on multiple antenna system. Wireless communications systems equipped with multiple antennas at both the transmitter and receiver have been widely stated as an important technology to improve performance. These so-called multiple-input multiple-output (MIMO) systems can increase diversity to reduce performance degradation due to the fading phenomenon in wireless channels. Using statistical signal processing approach Rayleigh, Rician and Nakagami fading scenarios are analyzed. Obtained results show slightly better performance for mean received power in Nakagami environment compared to Rician broadband radio channel in the weak interference conditions.