I have a question about the data-rate limitations imposed from bandwidth for FSK signals. Suppose I transmit an FSK signal with frequencies as:
$$f_1 = 2400 MHz,$$ and $$f_2 = 2401 MHz$$
that is detected by a receiver. Assuming that the DC output voltage of the detector in the receiver is 100 mVp for 2400 MHz and 110 mVp for 2401 MHz. Without focusing on the circuit design, Is there any limitation on the rate at which I can transmit and receive this signal correctly? I always hear that the bandwidth limits the data-rate but I don't understand exactly why.