A rigorous analysis of the statistical properties of the discrete-time triply-selective mimo rayleigh fading channel model

We analyze the correlation properties of the discrete-time triply-selective multiple-input multiple-output (MIMO) Rayleigh fading channel model, while triply-selective refers to selectivity in time, frequency, and space. A rigorous analysis of these correlation properties is indispensable to assess the performance of multiple-antenna techniques in realistic environments. To the best of the authors' knowledge, a similar analysis has not yet been presented in the literature.