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Re: [Discuss-gnuradio] Simple Frame Detection
From: |
Martin Braun |
Subject: |
Re: [Discuss-gnuradio] Simple Frame Detection |
Date: |
Mon, 09 Feb 2015 13:59:52 +0100 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.4.0 |
On 02/08/2015 05:27 PM, Brian Padalino wrote:
> The feedback loop cannot be realized inside the flowgraph since
> everything needs to be feed forward.
>
> This is a great example of how someone may want to do RF burst
> processing which may not necessarily be "real-time" but due to
> dead-air or guard bands might be able to catch up on the processing if
> you didn't have to keep processing every last incoming sample -
> especially at a higher sample rate. Moreover, it shows how blocks
> could be used to message each other to create feedback loops and
> convey downstream information to upstream processing elements which
> may care - things like SNR estimation, timing information, etc.
Well, even if you're *not* using OFDM, have a look at the codes (and the
ofdm_rx GRC example). We have state machines and feedback loops for
bursty reception, just as you described.
M