Dear all, I am trying to use the alamouti code implemented by trondeau. Studying the gr_ofdm_frame_acquisition I found several concepts that are not clear to me:
1) d_phase_count: what does it mean? 2) coarse_freq_comp(int freq_delta, int count): which is the meaning of this function? 3) what "-M_TWOPI*freq_delta*d_cplen/d_fft_length" represents? Thank you Vanessa On Fri, Oct 21, 2011 at 1:39 PM, Vanessa Gardellin <vanessa.gardel...@iit.cnr.it> wrote: > Dear all, > I am trying to configure a simple flow graph where I have 2 USRP N210 > connected using a mimo cable. > The ethernet is connected only to the device with IP 192.168.20.2. > > my python code is: > > self.uhd_usrp_source_0 = uhd.usrp_source( > device_addr= "addr=192.168.20.2, addr=192.168.20.3", > io_type=uhd.io_type.COMPLEX_FLOAT32, > num_channels=2, > ) > > _config = uhd.clock_config() > _config.ref_source = uhd.clock_config.REF_MIMO > _config.pps_source = uhd.clock_config.PPS_MIMO > self.uhd_usrp_source_0.set_clock_config(_config) > > > and my problem is that I can see the received led turned only on the > 192.168.20.3 device. > > > Moreover, it's not clear what channels are and how I should address > the 2 devices. > > Thanks > > Vanessa > -- Vanessa GARDELLIN, Ph.D. Researcher Institute for Informatics and Telematics (IIT), Italian National Research Council (CNR) Via G. Moruzzi 1 56124 Pisa - ITALY Phone: +390503153267 Room: B65/c E-mail: vanessa.gardel...@iit.cnr.it WWW: http://www.iit.cnr.it/staff/vanessa.gardellin/ Skype: gardellin.vanessa _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
