Temporal variation of multiple-input multiple-output (MIMO) channels in indoor environments

The measurement and characterisation of multiple-input multiple-output (MIMO) channels has gained increasing attention. Previous analysis of MIMO measurements has generally focused on the evaluation of the capacity of such systems in differing locations and configurations. We present measurements made in an indoor environment at 5.2 GHz, specifically to investigate temporal channel variation. It is shown that the performance of the overall MIMO channel varies at a slower rate than the individual channels between the transmit and receive elements