Design of a modern communication system with high quality using LoRa technology

Along the time and the increase in demands on modern communications networks, it has been observed that the number of the Internet of Things IoT devices has increased in countries around the world as they support subscriber services. The number of these devices increases every year, and there is a statistic that the number of devices will reach 60 billion devices in 2030.The research aims to obtain high-quality and secure communications from eavesdropping and reduce the corruption of received data due to its large numbers and within a certain period of time. We noticed the effect of this case reducing the bit error rate BER Through the practical experiments we conducted. In this research, we designed a communications system using modern communications technology LoRa, which supports IoT devices using sensors of the type SX1276 and a software-defined radio device SDR, Through conducting several laboratory experiments, we concluded that the best case is when Spreading factor SF=9 is at a constant bandwidth B.W=250kHz and the code rate CR=3, this case represents practically the lowest Bit Error Rate BER= 0.56dB, SNR=8 dB, While the theoretical reading was BER=0.6dB, SNR=11.6dB for a communications system that works with modern LoRa technology that supports internet of thing IoT applications.