On the Distribution of MISO Channel Capacity in the Noise and Interference-Limited Systems

In this paper, an exact distribution of channel capacity for MISO (Multiple-Input Single-Output) system with co-channel interference is derived from the information theoretical viewpoint. It is found that the MISO channel capacity in the noise-limited channel follows the chi-square distribution, and capacity in the interference-limited channel follows the F-distribution. Using these distributions of capacity, the outage capacity in Rayleigh fading channels can be accurately computed. From simulations, we have confirmed the accuracy of our analysis which exactly coincides with the empirical simulations in the noise-limited and in the interference-limited systems.