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An Experimental Study of RSSI for LoRa Technology in Different Bandwidths

LoRa technology is applied through a modulation technique for transmitting data at a longer distance than other technologies such as Wi-Fi, Bluetooth, cellular, etc. LoRa is a standard technology for low power technology and many parameters. There are several equations in each parameter for calculation. Therefore, we compared experimental RSSI and computed RSSI in areas with various signal barriers. In our estimation, we found the n-value from the RSSI equation suitable in this area is 4–6. In our experiment, we computed the percentage of error as an indicator to find the error of both RSSI with SF12 and n=5. We found the percentage of error value of the experiment at 9.56% and 8.63% as BW125 and BW250, respectively.