[Discuss-gnuradio] Data from FFT sink

2008-07-04 Thread Swapna Raj
Hi all, I'm using RFX2400 in my research to build a cognitive radio based system. i'm performing a Spectrum scan and displaying the spectrum using fftsink2.But i need to display as well as get the data for further analysis. I went through the fftsink2 code but it did not help. I wanted to know if

Re: Re[Discuss-gnuradio] sampling precision

2008-07-04 Thread Eric Blossom
On Fri, Jul 04, 2008 at 07:52:56AM -0700, irene159 wrote: > > Are there any files using resampling function that I can take a look at? > [EMAIL PROTECTED] trunk]$ find . -name '*.py' -print0 | xargs -0 grep -l rational_resampler ./gnuradio-core/src/lib/swig/gnuradio_swig_py_filter.py ./gnuradio-

Re: Re[Discuss-gnuradio] sampling precision

2008-07-04 Thread Martin Braun
On Fri, Jul 04, 2008 at 07:52:56AM -0700, irene159 wrote: > Can someone give me more informations on the "rational_bw" parameter? I apologise for not answering the actual question. This parameter controls how wide the transition band for the interpolation filter can be and depends on the oversampl

Re: Re[Discuss-gnuradio] sampling precision

2008-07-04 Thread Martin Braun
On Fri, Jul 04, 2008 at 07:52:56AM -0700, irene159 wrote: > > Hello, > > I run into some weird results on the > rational_resampler.rational_resampler_ccf output. > > Look at picture 1 [1] bellow: > > Signal input : Carrier of 1,4 Mhz sampled at 640 Ksamp/s > Interporlation resampler

Re[Discuss-gnuradio] sampling precision

2008-07-04 Thread irene159
Hello, I run into some weird results on the rational_resampler.rational_resampler_ccf output. Look at picture 1 [1] bellow: Signal input : Carrier of 1,4 Mhz sampled at 640 Ksamp/s Interporlation resampler = 2 Decimation resampler = 3 Manual extract: fractional_bw: fractiona

Re: [Discuss-gnuradio] (no subject)

2008-07-04 Thread Tom Rondeau
matteo zunino wrote: Hi, I'm working on put differents modulations in differents carriers. i've implemented my project, modifying Ofdm.py and the sorces gr_ofdm_mapper_bcv.cc and gr_ofdm_frame_sink.cc. Now i've a doubt. The benchamrk simulation go correctly. how can i see if the program did

[Discuss-gnuradio] (no subject)

2008-07-04 Thread matteo zunino
Hi, I'm working on put differents modulations in differents carriers. i've implemented my project, modifying Ofdm.py and the sorces gr_ofdm_mapper_bcv.cc and gr_ofdm_frame_sink.cc. Now i've a doubt. The benchamrk simulation go correctly. how can i see if the program did the right demodulation