Implementation of MIMO Channel Simulator for SUI Channel Model Applications

A Kronecker model-based 2 x 2 multiple-input multiple- output (MIMO) channel simulator has been successfully developed. This MIMO channel matrix is determined from the Kronecker product of the spatial correlation matrices at the transmitter and the receiver. It provides reconfigurable channel models suitable to MIMO, multiple-input single- output (MISO) and single-input multiple-output (SIMO) performance analyses. The channel simulator provides both frequency selective and frequency flat fading components. The TMS320C55 DSP chipset is used as an essential subsystem in the implementation of real-time complex Gaussian random variables, the Kronecker matrix calculations and Cholesky decomposition operations. The programmable SAW tap-delay line and attenuator are adopted to characterize the delay profile for the frequency-selective fading channel. The Doppler spectrum and the modified Stanford University Interim (SUI-5) channel model experimental results closely conform to the analytical predictions. The BER measurements satisfy most scenarios of the MIMO channel performance.