Re: [Discuss-gnuradio] Multi antenna transmit with RFX2400

2009-03-26 Thread Jérémy Skelton
derrun); if (underrun) cout << "Underrrun \n"; }; }; Le 24-mars-09 à 09:54, Jérémy Skelton a écrit : Hi, I was wondering how I can transmit synchronously on two antenna using two RFX2400 on the same USRP1 motherboard. It should be possible as the daugtherboards are M

Re: [Discuss-gnuradio] Multi antenna transmit with RFX2400

2009-03-26 Thread Jérémy Skelton
NUMBYTES,&underrun); if (underrun) cout << "Underrrun \n"; }; }; Le 24-mars-09 à 09:54, Jérémy Skelton a écrit : Hi, I was wondering how I can transmit synchronously on two antenna using two RFX2400 on the same USRP1 motherboard. It sho

[Discuss-gnuradio] Multi antenna transmit with RFX2400

2009-03-24 Thread Jérémy Skelton
Hi, I was wondering how I can transmit synchronously on two antenna using two RFX2400 on the same USRP1 motherboard. It should be possible as the daugtherboards are MIMO capable but does anyone have some c++ working piece of code ? My goal is to implement an Alamouti scheme diversity transm

Re: [Discuss-gnuradio] Using benchmark_ofdm.py & gr_plot_ofdm.py

2009-02-05 Thread Jérémy Skelton
What I mainly don't understand is why the red and the blue parts are not the same. According to the python file, it should be the same as acq_data and derot_data seem to be processed in parallel with the same set of functions and are actually from the same data file. OK, for this part I r

[Discuss-gnuradio] Using benchmark_ofdm.py & gr_plot_ofdm.py

2009-02-04 Thread Jérémy Skelton
Hi, I was taking a look at the ofdm files by using first the benchmark with log enabled and then the plot. First I copied ofdm_frame_sink_c.dat to ofdm_frame_acq_c.dat because this last file was missing. I would like to have some comments about the resulting plot I had : http://www.skelto

[Discuss-gnuradio] Using OFDM

2008-12-09 Thread Jérémy Skelton
Hi, I was trying to use OFDM from gnuradio. I made my own .xml to handle it in GRC and it is designed to make a call like this : self.blks2_ofdm_mod_0 = blks2.ofdm_mod( options=my_utils.make_ofdm_options(mod="qpsk", fft=512, cp=128, tones=200, verbose=True, log=False),

[Discuss-gnuradio] Simple QPSK baseband transmission using GRC

2008-12-04 Thread Jérémy Skelton
Hi, I have been trying to make a baseband transmission by assembling blocks with GRC. I'm using this scheme : http://www.skelton.eu.org/Image1.png To problem is that I'm not able to recover the original data but only the repetitions of it : I repeat several times two bytes in the input fi

Re: [Discuss-gnuradio] How to stor hexadecimal transmitted data in ./benchmark_tx

2008-11-27 Thread Jérémy Skelton
Hi Vaibhav, You may have a look at this : f = open('file', 'a') f.write('%X\t' % (data)) I didn't try but it should be the way to print in hexadecimal and appending to the file. Le 26-nov.-08 à 15:06, Vaibhav Bhatnagar a écrit : I would like to capture all packets, when it generates in