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[Discuss-gnuradio] Reading I & Q from a binary file
From: |
paul munro |
Subject: |
[Discuss-gnuradio] Reading I & Q from a binary file |
Date: |
Sun, 25 Jun 2006 22:49:03 +0000 |
Hi.
I have sampled a FM signal and saved it to a file using 'usrp_rx_cfile.py'.
I have checked the file by demodulating it using 'wfm_rcv_file.py' and
everything works fine. I am now trying to read the file using LabView. The
tutorial by Dawei Shen says the data is 16 bit signed integers in I followed
by Q format. What I read in LabView is: each I sample is zero, and Q values
range from 0 to +-32000 (see figure).
Are these values reasonable?? Should the inphase sample be zero?? I doesn't
seem right to me... Is it definitely I followed by Q, am I a word out?? I
have tried with a few different files, but I get the same results.
Any help appreciated
Regards Paul
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