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Re: [Discuss-gnuradio] MA (Memory Acceleration) and SR-DVB in Karlsruhe,

From: Sylvain Munaut
Subject: Re: [Discuss-gnuradio] MA (Memory Acceleration) and SR-DVB in Karlsruhe, @ WSR10
Date: Mon, 15 Mar 2010 09:51:57 +0100
User-agent: Thunderbird (X11/20091028)


> Both SR-DVB and OpenBTS wrote their own code from scratch,
> even though major parts of the computation could have been handled by
> GNU Radio processing blocks.  Why?

OpenBTS makes uses of inband signaling to maintain strict TX/RX sync,
AFAIK this is not supported in the standard blocks.

They also tweak the way the RFX are tuned, trying to put the TX carrier
inside a notch of the RX IF filter (at least that's what the docs says).

Not using the standard libs for tuning is however quite annoying because
when you deviate from the standard 2*RFX setup (like 1 RFX or a
RFX+DBSRX or WBX), you have to change a lot of code :(

Just my .02



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