This activity has been carried out at the Wireless Communications Lab (WiLAB) of the University of Bologna/National Research Council (Italy). The authors wish to thank the WiLAB Director, Prof. Oreste Andrisano, for his comments and suggestions and for providing all technical facilities.

This work has been funded by  MathWorks in the framework of the Academic Support A#: 1-2073488447.

The authors wish to thank Stefano Olivieri (MathWorks Italy) for his helpful suggestions and support.