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Performance Analysis of Point-to-Point LoRa End Device Communication

LoRa is an emerging communication technology that can be used in any field. Many types of 
research have analyzed LoRa network using a gateway and several end devices to many 
monitoring applications. However, the communication performance between LoRa end devices 
only has not been evaluated. This research tested a LoRa communication between two end 
devices in a point-to-point topology. From the experiment results with various payload lengths, 
the optimum payload is only 48 bytes with the default module configuration. Longer payload 
resulted in a decreased performance. Thus, this research implemented a waiting protocol that 
can increase the Packet Reception Ratio of 100-byte payload from 49.87% to 97.52%.