Blue Boy wrote:
Hello Everyone,
My first post:
I am a windows kernel programmer by profession.Recently my interest
has grown for SDR gnuradio.I an new to this field so I have newbie
doubts.I would welcome if you just point to some links for my answers.
1] What is usrp cfile format? complex/float but whats stored in numbers
like amplitude/intensity/phase difference etc.
Its a binary file containing 64-bit complex numbers where each 64 bit
complex number is 2 32-bit floating point numbers corresponding to to
the real and imaginary parts of a complex number.
2] Is frequency also stored in the cfile ? or we have to assume
frequency from file name? How to reconstruct complete/sampled signal
from Cfile ?
You need to know the sampling rate and baseband frequency, the file is
just raw data samples without any context.
3] Any scripts to read from cfile(Until USRP2 stocks are back :) ).I
have tried several old scripts but they don't run in latest gnuradio ?
Though i have made my own in GRC using
file-source->throttle->graphical-fft-sink.But i doubt on it as i am newbie.
That grc flowgraph would work fine. To be accurate, you have to set the
samp_rate in the flowgraph and the baseband freq on the fft.
4] Can we write non graphical code also in GRC itself.
See the options block->generate mode.
5] Can't we use c/c++ instead of python.Its problematic to match even
indentations/tab/spaces.totally newbie to python.
Of course, here is a c++ example code
http://gnuradio.org/cgit/gnuradio.git/tree/gnuradio-examples/c++
Although, python development is going to be a lot easier. I set my
editor to show whitespaces, never have a problem.
_josh
Thanks Everyone...
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