How can I calculate the occupied bandwidth for an FSK modulated signal?
Carson’s Rule to determine the BW for an FSK signal:
For 2FSK / 2GFSK modulation the symbol rate is equal to the data rate, and unlike 4FSK / 4GFSK modulation there is only one deviation. This way, the formula can be simplified to the following form:
4FSK / 4GFSK modulation has inner and outer deviation parameters, the connection between them can be described as the following:
This way, the OBW for 4FSK / 4GFSK: