Hello,
I am trying to transmit and receive a signal that the user defines. I am
following the directions written by Eric Blossom on independently
generating signals and then transmitting them.
"
u = usrp.sink_c(...)
i = <generate I somehow>
q = <generate Q somehow>
f2c = gr.float_to_complex()
fg.connect(i, (f2c, 0))
fg.connect(q, (f2c, 1))
fg.connect(f2c, u)
"
i = [1000, .... , 923] // 16 values in this array, one period of cosine
q = [0, ....., -383] // calculated using hilbert transform, 16 values
isrc = gr.vector_source_f(i, 1)
qsrc = gr.vector_source_f(q, 1)
fg.connect(isrc .... ....)
The signal "i" is supposed to be a cosine wave.
When I connect f2c to gr.filesink, I see a cosine wave. However, the
received signal looks like noise centered around 51.
Also: why is the waveform of gr.sig_source_c(SIN_WAVE, offset = 0) a
cosine wave? I got this by using gr.file_sink, and looking at the odd=real
values. file_sink output = "REAL IMAG REAL IMAG .... "
Any help would be appreciated.
Jonathan Shan
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