A Note on Discrete-Time Triply-Selective MIMO Rayleigh Fading Channel Models

Abstract — We discuss recent results on discrete-time mod-els for triply-selective multiple-input multiple-output (MIMO) Rayleigh fading channels. Our key finding is that a previously proposed model [2], which allows for efficient computer sim-ulations, is sufficiently accurate for a wide range of practical scenarios. Index Terms — Channel modeling, dispersive channels, MIMO systems, Rayleigh channels, time-varying channels. IN digital mobile communication systems, baseband signalprocessing is typically carried out in the discrete-time domain. Correspondingly, an end-to-end discrete-time chan-nel model comprising the continuous-time physical channel model, the (analog) transmit and receive filters, as well as the sampling process at the receiver is of great interest. In [1], a statistical discrete-time model for single-input single-output (SISO) wide-sense stationary (WSS) Rayleigh fadin