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Home › Forums › SYSTEM › DBSK Modulator › Reply To: DBSK Modulator

October 7, 2015 at 4:06 am #25930
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Ahmad Mahmood
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Hi Sasha
the circuit you suggested is giving output after setting frequency parameters but there is a problem it gives the same amount of noise at the out put. More over you set the modulation constant of Phase Modulator to 1 degree so its not giving PSK signal to get BPSK we’ll have to set it 180 degree for QPSK 90 degree and for 8 PSK 45 degree. As we required BPSK we set it to 180 degree but now changed phase of output interfere with noise and give us the disrupted output. see the modified circuit and help if you can We want refine signal without noise.

Thanks in anticipation.

Attachments:

  1. Signal.jpg

  2. Noise.jpg

  3. Signal-Noise.jpg

  1. dpsk1.osd

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