Real and Imag data

GNU Radio
1

Hi
I’m quite new to the GNU Radio. Recently, I got a problem with how to
pick I and Q parts from the file data_source_1.dat seperately in python.
I have got the signal from the sentence below:

src = gr.file_source(gr.sizeof_gr_complex,“data_source_1.dat”)

I want to store the data(“src”) into data_real[i],data_imag[i] in this
way. Then, calculate the sum and so on …

Any help will be appreciate.

Thanks~

2

Hi all
Maybe my question is a little bit easy for you. However, I really can’t
get through this.
In all, any help will be appreciated.

3

Hi, all.
I’ve just written my code like this:

self.src=gr.file_source(gr.sizeof_gr_complex,“data_source_1.dat”)

file data_source_1.dat

rx_subdev = self.src.db[0]+self.src.db[1] # seperate signal,I Q
self.src.set_mux(gru.hexint(0xf1f0f3f2))
deinterleaver = gr.deinterleave(gr.sizeof_gr_complex)

for i in range(len(rx_subdev)): # 10 times gain
rx_subdev[i].set_gain(10)

self.src_real = gr.vector_source_f() # define vector sources
self.src_imag = gr.vector_source_f()
self.connect(self.rx_src,deinterleaver)
self.connect((deinterleaver,0),self.src_real)
self.connect((deinterleaver,1),self.src_imag)

a = src.real() # real parts
b = src.imag() # imag parts

Then, a[i] b[i] to calculate

But, I got these:
Traceback (most recent call last):
File “./pick_signal_complex.py”, line 155, in
tb = wfm_rx_block()
File “./pick_signal_complex.py”, line 88, in init
rx_subdev = self.src.db[0]+self.src.db[1] # seperate signal,I
Q
TypeError: ‘instancemethod’ object is unsubscriptable

Thanks

4

Hi, all.
I finally figure out myself, as follows:
real = gr.complex_to_real()
imag = gr.complex_to_imag()

  self.connect(self.src,real)
  self.connect(self.src,imag)

  sink1 = gr.vector_sink_f()
  sink2 = gr.vector_sink_f()

  self.connect(real,sink1)
  self.connect(imag,sink2)

  self.start()

  a = sink1.data()
  b = sink2.data()

Then, we can use a[i] or b[i]. Hope these may help someone who caught in
the same trouble with me.