| Popis: |
Due to the development of the IoT, various communications technologies have emerged which aim to achieve high coverage at low cost and minimal energy consumption. All of those communication networks are called low power WAN (LPWAN). LoRa is one of the LPWAN which is acquiring quite a lot of commercial traction. At the same time, LO leakage (LOL) is a common problem for modern communication system, which can affect the performance significantly. So we analyze the influence of LOL in LoRa, and present the corresponding theoretical model. A simulation on performance of LoRa with LOL has been completed, and the result shows that BER decreases as the SIR grows high, and becomes lowest with specific initial frequency. The loss of nonlinear amplification is simulated as well, and when SIR=40dB, the gain reduces by 0.75dB. |
