Re: [Discuss-gnuradio] GNU Radio on embedded systems

[Martin Dvh]

Philip Balister wrote:
> Has anyone looked at GNU Radio on an embedded system seriously? I've
> built it for an ARM processor and heard that the dial tone example
> will work.
> 
> I'm particularly interested in using the python-less method
> of connecting blocks. I understand that many of the GNU radio blocks
> are written using floating point,
Yes, allmost all of them depend heavely on floating point performance.
Floating point performance, memory speed and USB-throughput are the main 
bottlenecks for gnuradio.
You could rewite some of the blocks in fixed-point, but then you loose much 
dynamic range and need very high fixed-point performance.
I know of good performing Software Defined Radio platforms using an ARM 
processor but they all have a high-performance DSP processor attached to
or integrated into the ARM processor.

> but does the core gnu radio code
> depend on good floating point performance?
Depends on what you consider "the core gnu radio code".
The flowgraph and flowgraph-scheduler do not depend on floating point 
performance.
But things like the spectrum display (fft-sink), all modulation/demodulation 
and all the filter blocks do,

Martin
> 
> Philip
> 
> 
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