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Re: [Discuss-gnuradio] lack of understanding the different formats to st
From: |
Marcus Müller |
Subject: |
Re: [Discuss-gnuradio] lack of understanding the different formats to store samples |
Date: |
Fri, 11 Mar 2016 14:53:04 +0100 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.1.0 |
In what format are your 1bit samples? I'd assume they are just the fact
whether a byte is 0x00 or 0x01; in that case, just use unpacked to packed.
On 03/11/2016 10:24 AM, Ralph A. Schmid, dk5ras wrote:
> Hi,
>
> Being an RF guy I must admit that I am somehow lost in the different ways
> how samples are stored in files. I stumbled over this question when I
> experimented with https://github.com/osqzss/gps-sdr-sim. It works great when
> using 16 bit samples and using a simple two-block grc file, feeding them
> directly from a file source to the UHD sink. However the 1 bit variant
> sounds promising, as the files are much smaller this way and also the
> generation of them runs much faster.
>
> It must only be a matter of finding the right blocks and the right settings
> to convert this, but my google search was highly confusing, most probably
> due to different names for the same thing.
>
> So I do not only ask for how to use "four 1-bit I/Q samples into a single
> byte" (taken from the readme of the gps-sdr-sim), but for a more general
> overview how this stuff is done, to be prepared for other upcoming questions
> of this kind :) Up to now I solved those issues by an educated guess or even
> by try and error, what is not very satisfying...
>
> Ralph.
>
>
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Re: [Discuss-gnuradio] lack of understanding the different formats to store samples, Jacob Gilbert, 2016/03/11