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SoraURadioSetSampleRate,this function is not useful?

Answered SoraURadioSetSampleRate,this function is not useful?

  • Friday, March 04, 2011 7:44 AM
     
     
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    In umx_sample.cpp, SoraURadioSetSampleRate(TARGET_RADIO, 40) means that the sampling rate is 40MHz.But when I set the sanpling rate to 20,I can't see any changes of the receiving I/Q data.So,I doubt that the function is not useful.Maybe I don't know how to use this function or the sampling rate of radio front end is not changed.Can you answer my question?

    thank you very much!

     

All Replies

  • Monday, March 07, 2011 3:08 PM
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    It depends on your firmware, which might not support sample rate configuration.
    Sen Xiang (项森)
     
  • Monday, March 07, 2011 3:32 PM
     
     
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    Hello,Sen Xiang,thank you for your reply.

    My firmware is USRP and the daughterboard is XCVR2450,whether this firmware can support sanmple rate configuration or not .

     
  • Tuesday, March 08, 2011 3:21 AM
    Owner
     
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    No. You cannot change the sampling rate on this daughterboard.

    You may resample in software.

    Thanks,

    - Kun

     
  • Tuesday, March 08, 2011 6:36 AM
     
     
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    Thank you for your reply!

    Can you tell me the sample rate of DAC chip in USRP? I guess it is the same to ADC sample rate?

     
  • Thursday, March 10, 2011 9:43 AM
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    right. they are the same, 44Mhz.
     
  • Friday, March 11, 2011 12:49 AM
     
     
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    Thank you!