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Re: calculate SNR and watch a binary file
From: |
Markus Feldmann |
Subject: |
Re: calculate SNR and watch a binary file |
Date: |
Thu, 26 Mar 2009 23:18:34 +0100 |
User-agent: |
Mozilla-Thunderbird 2.0.0.19 (X11/20090103) |
Rob Mahurin schrieb:
These files came from some analog-to-digital converter? If you look
at them with hexdump, there is stuff that looks like data only in the
first 200 bytes or so. The rest of the file looks likes zeros and
the occasional 0x80bf. I wouldn't expect the data read from these
files to have a meaningful Fourier transform.
Cheers,
Rob
The data can be watched with my method, but not be plotted.
I do not know how to collect the complex values and bits ?
Ok, here is a clipping from the data at the beginning:
0 + 0i
0 + 0i
-1 + 0i
0 - 1i
-13 + 2i
65 - 32i
-183 + 98i
412 - 233i
-831 + 478i
1572 - 918i
-3050 + 1745i
8314 - 4139i
-12548 - 5491i
3899 + 10329i
3523 - 2748i
-1791 + 1379i
951 - 738i
-484 + 378i
219 - 176i
-84 + 69i
19 - 20i
0 + 0i
0 - 1i
0 + 0i
0 - 1i
0 + 0i
0 - 1i
0 + 0i
0 + 0i
0 + 0i
0 + 0i
0 + 0i
0 + 0i
0 + 0i
0 + 0i
0 + 0i
0 + 0i
0 + 0i
0 + 0i
0 + 0i
0 + 0i
0 + 0i
0 - 1i
0 + 0i
-1 - 1i
0 + 0i
-1 - 1i
0 + 0i
-1 - 1i
0 + 0i
-1 + 0i
0 - 1i
0 + 0i
-1 - 1i
0 + 0i
-1 + 0i
0 - 1i
-1 + 0i
How can i collect bits from the I or Q Signal ?
And i do not know whether these are 16 bit samples
or 32 bit ?
And i do not know where is the beginning of the
samples ?
Maybe the curious values at the beginning is the
start point ?
Regards Markus
- calculate SNR and watch a binary file, Markus Feldmann, 2009/03/25
- Re: calculate SNR and watch a binary file, Markus Feldmann, 2009/03/25
- Re: calculate SNR and watch a binary file, Francesco Potorti`, 2009/03/25
- Re: calculate SNR and watch a binary file, Markus Feldmann, 2009/03/26
- Re: calculate SNR and watch a binary file, Francesco Potorti`, 2009/03/26
- Re: calculate SNR and watch a binary file, Markus Feldmann, 2009/03/26
- Re: calculate SNR and watch a binary file, Rob Mahurin, 2009/03/26
- Re: calculate SNR and watch a binary file, Markus Feldmann, 2009/03/26
- Re: calculate SNR and watch a binary file,
Markus Feldmann <=
- Re: calculate SNR and watch a binary file, Rob Mahurin, 2009/03/27
- Re: calculate SNR and watch a binary file, feldmaus, 2009/03/27
- Re: calculate SNR and watch a binary file, Markus Feldmann, 2009/03/27
- Re: calculate SNR and watch a binary file, feldmaus, 2009/03/28