Measurement of LoRa-based Received Signal Strength Indication (RSSI) Using Point-to-Point Topology in a Seaside Area
Keywords:Signal effect, point-to-point communication, RSSI, LoRa
A data monitoring system’s performance analysis is fundamental to proving quality and networking efficiency. This paper presents the received signal strength indication (RSSI) measurements of wireless communication with point-to-point LoRa technology for use in the 433 MHz frequency band. The test was performed in the area of Chalathat beach, Songkhla province, Thailand, which has a barrier environment of trees along the shore and is opposite the Rajamangala University of Technology Srivijaya (RUTS). This demonstration was conducted in the actual location to observe the loss from coastal environment conditions from waves and sea breeze. In addition, the study aimed to determine the effect of signal performance by RSSI measurements. The test consisted of a transmitter (Tx) and a receiver (Rx) with a transmit power of 17 dBm and an antenna gain of 3 dBi on both Tx and Rx. The testing starts with RSSI measurements from a distance of 10 meters and increases the number of measures by 10 meters until data loss begins. The test results showed that communication distances could be connected up to 500 meters without packet loss, with RSSI as low as -107 dBm, and a correlation graph in the form of a logarithmic function with a reduced tendency. However, the RSSI value decreases as the distance increases. At the same time, the test results can indicate its effectiveness as a guide for further application of monitoring systems at the beach area.
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