Thanks Marcus . I want to append 2 plots on same graph ( the transmitted signal and the received signal ) . I connected WX GUI scope sink to the ofdm tx and another one to the ofdm rx . I put CFO model & channel model between the tx & rx . I want to compare between the signals while changing offset and noise. How can I append them on same graph ? & Is there any other method to plot in GNU Radio ?
Thanks in advance . 2014-06-21 17:29 GMT+03:00 Marcus Müller <marcus.muel...@ettus.com>: > Hello Sara, > > It's hard to tell without you offering us the actual line where you call > make, but from looking at your symbols variable I'd say you have a tuple > containing a tuple of tuples of floats, > and what you need would be a > tuple of tuples containing complexes. > > Note that (1,1j) is *not* a complex, but 1+1j is. > > Greetings, > Marcus > > On 21.06.2014 16:00, Sara Chérif wrote: > > Hello , > > > > I want to implement ofdm system with these parameters: > > > > FFT length=128 > > > > Occupied subcarriers=117. > > > > 4 pilots > > > > 1 DC > > > > 6 zeros subcarriers . > > > > I put these parameters in ofdm tx & ofdm Rx: > > > > Occupied carriers =(range(-58,-42)+range(-41, -14) + range(-13, -7) + > > range(-6, 0) + range(1, 7) + range(7, 14) + range(15, 42)+range(43,60),) > > > > pilots carriers=((-42, -14, 14, 42,),) > > > > pilot symbols =(((-1,1j),(1,-1j),(-1,1j),(-1j,1),),) > > > > > > But I got this error , I don't understand what is wrong > > > > > > File > > > "/usr/local/lib/python2.7/dist-packages/gnuradio/digital/digital_swig.py", > > line 4635, in make > > return _digital_swig.ofdm_equalizer_simpledfe_make(*args, **kwargs) > > TypeError: in method 'ofdm_equalizer_simpledfe_make', argument 5 of type > > 'std::vector< std::vector< gr_complex,std::allocator< gr_complex > > >> ,std::allocator< std::vector< gr_complex,std::allocator< gr_complex > > > > > >> const &' > > > > Thanks. > > > > > > > > _______________________________________________ > > Discuss-gnuradio mailing list > > Discuss-gnuradio@gnu.org > > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > > > > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >
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