Capture File format

GNU Radio
1

Hello.

I have an array in MATLAB that is the IQ data in complex form of a
capture from my hardware. I wish to now feed this to GNURadio. What
format do I export/save this array to file? Are there any example .m
files floating around for this task?

Thanks
Jeff

2

On 5/8/07, Jeffrey K. [email protected] wrote:

Hello.

I have an array in MATLAB that is the IQ data in complex form of a
capture from my hardware. I wish to now feed this to GNURadio. What
format do I export/save this array to file? Are there any example .m
files floating around for this task?

There are some utility .m files located here:
http://gnuradio.org/trac/browser/gnuradio/trunk/gnuradio-core/src/utils

I believe using the write_float_binary.m to interleave complex data
should yield correct results, but I could be completely wrong.

Either way, check out the files located there.

Brian

3

Thanks. That is just what i was looking for. From the read_complex
file I was able to create a write_complex that takes in a complex
array and filename.

I attached it.

4

I have noticed a couple of those files were originally written for
Labview and not quite fully ported to Matlab (I think). However, the
fixes are very minor. Here is a write_complex_binary script that should
do the trick.

I believe using the write_float_binary.m to interleave complex data
should yield correct results, but I could be completely wrong.

I don’t think write_float_binary interleaves.

Either way, check out the files located there.

Brian

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