Optimal radio capacity of a Rayleigh fading single-cell spread spectrum MIMO system

In this paper, the problem of estimating the optimal radio capacity of a single-cell spread spectrum (SS) multiple-input multiple-output (MIMO) system operating in a Rayleigh fading environment is examined. The optimization between the radio capacity and the theoretically achievable average channel capacity (in the sense of information theory) per user of a MIMO single-cell SS system operating in a Rayleigh fading environment, is presented. Then, the spectral efficiency is estimated in terms of the achievable average channel capacity per user, during the operation over a broadcast time-varying link, and leads to a simple novel-closed form expression for the optimal radio capacity value based on the maximization of the achieved spectral efficiency. Numerical results are presented to illustrate the proposed analysis.