Hello, I am using a slow FH bfsk communication system. to demodulate I use a bank of correlators (non coherent demodulation). But my problem is when I emit and when I receive the gain is not the same over the whole bandwidth. In all the papers I have found it is assumed that the energy send and received is the same for each tone. How to take into account the different gains associated with each tone ? Thank you very much, Jean Michel