MIMO TRANSMISSION IN SPATIALLY CORRELATED FADING

A multiple-input, multiple-output (MIMO) system transmission over a channel characterized by spatially correlated fading is addressed in this article. Two scenarios that involved using well-known statistical fading distributions, correlated-Rician and correlated-Nakagami-m fading, were deployed in analysis. The moment-generating function obtained using a stochastic process was applied to determine the ergodic, or average, channel capacity, thus by passing the difficulty traditionally associated with calculating the probability density function of the signal-to-noise ratio. The results of several numerical and Monte-Carlo comparisons are offered for validating the accuracy of the theoretically derived formulae. Furthermore, many plots were designed by combining different numbers of transmitters and receivers, N-T X N-R, for comparison. The discussion addresses the nonlinearity of increments in channel capacity regarding different numbers of transmitter or receiver antennas and different correlation coefficients. The fading parameter is still the dominant factor, whether the correlated-Nakagami-m or correlated-Rician distributed fading is adopted as the channel model for the MIMO system, thus governing the average capacity.