THE EFFECT THE EFFECT OF SPREADING FACTOR ON LORA TRANSMISSION

Abstract

The conditions of a different area can affect the transmission of data so that
transmission is needed that is resistant to interference and in certain conditions a
device that can monitor several places is needed at once. The concept of Wireless
Sensor Network (WSN) is applied to meet these demands. This research is shown to
determine the effect of Spreading Factor (SF) on Long Range (LORA) transmission
on distance by analyzing Quality of Service (QOS). The test is divided into 2
conditions, namely: The Line of Sight (LOS) condition & Non-Line of Sight (NLOS)
condition. The test results show that the maximum distance that the LoRa
transmitter can reach is 1100m in LOS conditions while for NLOS conditions it can
only reach a distance of 300m. The QOS parameters used to consist of Delay,
Throughput, RSSI, & SNR. Spreading Factor (SF) affects Delay and Throughput, not
RSSI and SNR. The best value of Delay (9.64 ms), Throughput (667.60 Bps), and RSSI
( -94.25 dBm) is at Spreading Factor (SF) 6 and SNR (5.23 dB) is Spreading Factor
(SF) 8 and for the distance, the value of RSSI (-76.45 dBm) and SNR (5.23 dB) is at a
distance of 10m. This applies in LOS and NLOS conditions.