Experimental evaluation toward transmit and receive diversity effect in SIMO/MIMO sensors

This paper proposes an intruder detection method using Multiple Input Multiple Output channel, MIMO Sensor. Although the channel capacity on the MIMO transmission is severely degraded in time variant channels, we can take advantage of this feature MIMO Sensor applications. We have already demonstrated the effectiveness of 2×2 MIMO sensor using 2.4 GHz band at a small room (Size is 50 m²). In this paper, we compare the detection probability of SIMO/MIMO sensors using the measured propagation channels at the room with the size of 140 m². From the measured results, It is confirmed that 400 MHz band is appropriate compared to 2.4 GHz band due to its lower propagation path loss. Moreover, 2×2 MIMO sensor obtains the higher detection probability compared to 4×1 SIMO sensor regardless of the measured location.