Home Forums SYSTEM Upsampling

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    • #38730
      Jamal
      Participant

      Hi All,

      I am trying to interleave 4 ADCs operating at 2GHz to make a total signal of 8GHz.
      I want to Upsample (add zeros) each ADC by 4 times before combining their output to form one interleaved signal. But when I run the simulation, it doesnt show any difference in pre and post upsampled signal.
      Can anyone suggest the problem with simulation please ?

    • #38842
      Jamal
      Participant

      Can we use the downsampler as upsampler ?

    • #38854
      Rajguru M. Mohan
      Participant

      Hi Jamal,
      I think both are different, we can’t use upsampling in place of downsampling.
      As, A-to-D and downsampler require anti-alias filtering
      – Prevents aliasing
      • D-to-A and upsampler require interpolation (i.e., reconstruction) filtering

      thanks,

    • #38875
      Jamal
      Participant

      You are right Rajguru
      Can you suggest a way to add zeros (i-e- perform upsampling) in a signal in optisystem ?

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