References

1. LoRa Alliance, "LoRaWAN 1.1 Specification Overview", Available at: https://lora-alliance.org
2. The Things Network, "LoRaWAN Device Activation Methods", Available at: https://www.thethingsnetwork.org/docs
3. ESP32 Documentation, "LoRa Communication Basics", Available at: https://docs.espressif.com
4. Sandeep Mistry, "LoRa and LoRaWAN for Arduino", GitHub Documentation, 2020.
5. Microchip Technology, "AN1200.22 LoRa Modulation Basics", Microchip Application Notes, 2019.