Re: [Discuss-gnuradio] dbpsk mod/demod

[mehdimolu]

hi,
the code I wrote is
  

#!/usr/bin/env python
from gnuradio import gr, gru, modulation_utils
from gnuradio import blks2
src_data = (0,1,1)
Bsrc = gr.vector_source_b(src_data,False)
Bsink = gr.vector_sink_b()
def build_graph():
                
        fg = gr.top_block ()
        Bmod = blks2.dbpsk_mod()
        Bdemod = blks2.dbpsk_demod()    
        fg.connect(Bsrc, Bmod, Bdemod, Bsink)
        return fg

if __name__ == '__main__': 
        fg = build_graph ()
        fg.run()
        print src_data
        sink_data = Bsink.data()
        print sink_data 

regards,
Mehdi



Eric Blossom wrote:
> 
> On Thu, Jun 19, 2008 at 05:16:17AM -0700, mehdimolu wrote:
>> 
>> Hi,
>> I connect dbpsk modulator to dbpsk demodulator. I expected that input and
>> output must be the same but it is not.
>> for instance input vector is (0, 1, 1) while 
>> output vector is (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 1, 1,
>> 0,
>> 0, 0, 0). what is the reason?
>> help is appreciated.  
> 
> Without actually seeing your code, it's hard to guess.
> 
> 
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