The template receiver is used at the receiver side as shown in Fig. 4. The optimum and isotropic template receivers satisfied constant noise power condition between input and output are considered. The optimum template receiver considered received signal from measured channel and it is an ideal case with maximum SNR gain, while the isotropic matched filter con-sidered received signal from free space channel using Friss’ transmission formula [7]-[9] with isotropic Tx and Rx antennas.