Thanks Sebastiaan. Now I know what the decimation means. Then, if I decimate by 4 or 8, how I can get the sampled values before reaching fft bins. What I want to do is to measure the noise power.
Thanks, Kyungtae -----Original Message----- From: Sebastiaan Heunis [mailto:sheu...@gmail.com] Sent: Monday, January 18, 2010 1:11 PM To: Kyungtae Kim Cc: Gnuradio Subject: Re: [Discuss-gnuradio] data from adc Kyungtae Do you mean directly after it is sampled, before any of the DDC functions? Then the answer is no. You will have to decimate by a factor of at least 4 when using real sampling and 8 when using complex sampling to be able to get the data over the USB link (for the USRP1). Sebastiaan -- Sebastiaan Heunis Radar Remote Sensing Group, University of Cape Town, South Africa Tel: +27 72 950 9370 On Mon, Jan 18, 2010 at 7:46 PM, Kyungtae Kim <kyung...@nec-labs.com> wrote: > Hi, > > > > Is there a way to get the data from ADC directly? I can find some examples > to get it with using FFT, however without FFT, I wonder how it can be > gotten. > > > > Thanks, > > Kyungtae > > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > http://lists.gnu.org/mailman/listinfo/discuss-gnuradio > > _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio