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digitized RoF system

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(joined September 2017)
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hi everyone. i would like to ask how I generate a digitized radio signal at transmitter. is there any component that can produce a digital rf or should I use like sine generator and then convert it with ADC?
or maybe any of you guys have a simple architecture (OSD file) for digitized RoF system?
I need help for designing this, please.
thank you, I will appreciate so much for the answer

Responses (6):

    • #45424

      hi everyone. i would like to ask how I generate a digitized radio signal at transmitter. is there any component that can produce a digital rf or should I use like sine generator and then convert it with ADC?
      or maybe any of you guys have a simple architecture (OSD file) for digitized RoF system?
      I need help for designing this, please.
      thank you, I will appreciate so much for the answer

    • #45436

      Hi,
      you can use the user-defined bit sequence generator in GBits/sec region followed by any kind of pulse generator like NRZ pulse generator to get an electrical signal in the RF region.

      hope this helps,
      Mohamed Abouseif

    • #46977

      thanks for the answer. so basically in optisystem the data is already digitized or maybe digital, am I right? and for designing digitized RoF i dont need other component to make the signal digitized?

    • #46993

      No exactly,
      you can generate CW signal.
      but if you want to digitalize the data, just you can do it by drive any pulse generator with certain Pseudo random bit generator (PRBG)

      thanks
      Mohamed Abouseif

      +2
    • #47025

      ah, I now get it. Thanks a lot Mr. Mohamed for the answer!!

    • #47042
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      mohamed diaa
      Participant

      so what is the difference between sine generator and pseudo generator , as if i want to simulate triple play GPON to transmit video and data, in data i will use pseudo generator and in video i also use the same or i will use the sine generator??

    • #47051

      sin generator is used to generate CW electrical signal, while Pseudo Random Bit Generator (PRBG) is used to generate a random sequence binary data either video and data.
      Sin generator signal is fully defined, like its frequency and amplitude. while PRBG delivers an almost random sequence of zeros and ones despite their amplitude and duration is defined by the user.

      Hope that clarify the differences,
      thanks
      Mohamed Abouseif

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