Hi Mehtap On Fri, 2018-04-27 at 15:57 +0300, mehtap özkan wrote: > Based on your calculations, I have decided to get a LIMESDR-PCIe. > The sampling rate will be 122,88 MSPS which will give 61.44 MHz I and 61.44 > MHz Q. I think it is the other way around: The Sampling rates are 61.44 MHz on I and Q simultaneously. The 122,88 MS/s is just a cumulative rate.
> That will be enough to demodulate a 50 MHz wide QPSK modulated signal. Probably! > I am not sure if I can decimate the 122,88 MSPS by 2 and still being able to > correctly demodulate the signal. No, you can't. See the sampling theorem. Best regards, Marcus
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