In this chapter we'll remind you all the basics required for a better understanding of a wireless transmission. 1
For that, we will talk about the unit, the decibel, as it might be a new topic for some of you. 2
We'll discuss its interest and its use. 3
We will then introduce the terms dBm, RSSI, sensitivity, transmitted power, received power and link 4
budget. 5
And finally, we will talk about the influence of noise in LoRa transmission and how LoRa achieved 6
to transmit data when noise become much higher 7
than the data itself. 8
With all these notions we'll be much more comfortable with technical documentation when it comes to discuss 9
about the performances of a transceiver.