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Showing results for tags 'envelope detection'.
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Hi , I am using ARTY 7, with Pmod DA3 . I generated frequency hops (FH) signal then I used these hops to modulate a BFSK (Binary Frequency Shift Keying) signal . Currently I am trying to recover the envelope of the BFSK signal. But I don't now how to do that by using the FPGA board. I did a google search , and I found some people are using Hilbert Transform (HT) to recover the envelope of a modulated signal. But this technique (HT) seems need more illustration about how to implement it by FPGA. The question is : how to detect the envelop of a modulated signal using an FPGA board? Kindly, see the attached two pictures; the first one is illustrating envelop detection process, and the second one is illustrating the block diagram of the system that I built on my FPGA . Thanks.