Envelope Correlation Parameter Measurements in a MIMO Antenna Array Configuration

In a 2 x 2 MIMO antenna array system envelope correlation coefficient "p" shows the influence of different propagation paths of the RF signals that reach the antenna elements. The approximated value of this coefficient is based on a simple closed-form equation and also varies from 0 to 1. Quite perfect performance for MIMO applications is achieved when this parameter approximates to zero. In this paper, we evaluate an antenna diversity MIMO system by measuring the envelope correlation coefficient. The corresponding results in our antenna array configurations show that the measured "p" has very small values and approximates to zero. This observation indicates quite perfect behavior and performance of our MIMO antenna array system.