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Altera_Forum
Honored Contributor
11 years agoBPSK Demodulation
Hello again, I am still struggling with BPSK demodulation :) OK, now I am trying to implement Costas Loop for carrier synchronization, which involves Inphase and Quadrature Phase paths. Inpha...
Altera_Forum
Honored Contributor
11 years agofreqz displays f normalised in radians so 1 means 0.5 of Fs and 0.3 means 0.15Fs.
Your thinking is right about loop and if somebody wants to jam you on .15 then take him to court. If he is doing legally adjacent to your band then set your nominal nco to a closer start such as .20 i is index of sample (time/period) and phase then equals that index as part of the gang i*2*pi *inc for the cos/sin values. Time here has no meaning until you apply specific Fs.