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i want to realize demodulation module in EP2C35 with verilog code,the frequency of carrier wave is 10KHz, and the frequency of modulation wave is 2.5MHz.
what method or algorithm is suitable?
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What is the modulation format of the data you are trying to analyze; is it an analog modulation scheme (AM, FM), or digital modulation scheme?
The term modulation is sometimes used to mean frequency shift up and down. In that case, demodulation consists of multiplication of the input signal with a cosine and sine waveform; mathematically, this is a complex exponential. Please take a look at these documents;
http://www.ovro.caltech.edu/~dwh/correlator/pdf/esc-100paper_hawkins.pdf (
http://www.ovro.caltech.edu/%7edwh/correlator/pdf/esc-100paper_hawkins.pdf)
http://www.ovro.caltech.edu/~dwh/correlator/pdf/esc-100slides_hawkins.pdf (
http://www.ovro.caltech.edu/%7edwh/correlator/pdf/esc-100slides_hawkins.pdf)
What is the signal you are trying to receive?
Regards,
Dave
Honored Contributor
