[Discuss-gnuradio] No simple_correlator output

[irene159]

Hello,

I'm still working on QPSK modulation [1]. I think I found the solution for
bit shifting (simple_framer/simple_correlator). I used uchar_to_float to
convert the stream of unsigned char coming from the dqpsk demodulator to the
stream of float expected at the simple_correlator input.

-------------------------------------------------------------------------------------------------------------------------------------
DEMODULATION
-------------------------------------------------------------------------------------------------------------------------------------
        ...
        objDemod = dqpsk.dqpsk_demod()
        conversion = gr.uchar_to_float()
        correlator = gr.simple_correlator(p_size)
        fg.connect(gr.file_source(gr.sizeof_gr_complex, "Modulated.dat"),
objDemod, conversion, correlator,                                         
                                               
gr.file_sink(gr.sizeof_char,"Result.txt"))

        ...
--------------------------------------------------------------------------------------------------------------------------------------


However, there seems to be no simple_correlator output, Result.txt file is
empty whereas I'm sure of having data coming out of uchar_to_float.

Regards,
Irene



----------------------------------------------------------------------------------------------------------------------
MODULATION
----------------------------------------------------------------------------------------------------------------------
...
bytes_src = gr.vector_source_b(arrTxt, False)
        framer = gr.simple_framer(p_size)
        objMod = dqpsk.dqpsk_mod()
        fg.connect(bytes_src, framer,
objMod,gr.file_sink(gr.sizeof_gr_complex,"Modulated.dat"))
...
-------------------------------------------------------------------------------------------------------------------------



[1] http://www.nabble.com/Modulation-problem---td17316660.html#a17316660
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