Outage probability and spectrum efficiency of microcellular mobile radio systems with smart antennas

Relying on the distribution of noncentral multivariate F variates, we investigate the outage probability and spectrum efficiency performance of microcellular and picocellular (indoor) systems with smart antennas. We consider interference limited systems in which the number of interferers exceed or is equal to the number of antenna elements and we present closed-form expressions when the desired signal is subject to Rician type of fading and the interfering signals exhibit Rayleigh type of fading. When applicable these new expressions are compared to those previously reported in the literature dealing with the performance of cellular systems without smart antenna capabilities and the performance of cellular systems with optimum combining when both the desired and interfering signals are subject to Rayleigh type of fading. Corresponding numerical results and plots are also provided and discussed