Re: [Discuss-gnuradio] two questions about the general communication system

[Daniel Halperin]

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On Apr 13, 2008, at 1:28 PM, Brian Padalino wrote:
> On Sun, Apr 13, 2008 at 2:38 PM, Bill Stevenson
> <address@hidden> wrote:
> > Thank you George!
> >
> > I am just wondering when we calculate BER, how can we determine the  
> > value of
> > bit energy? Thank u!

If you look through the relevant emails on the list, it seems no one  
really understands the translation between the short values from the  
USRP and absolute energy --- ADC and processing behavior complicate  
the issue. However, it is much easier to estimate the ratio of Signal  
to Noise --- this is a relative quantity. Just figure out receiver  
power in the absence of a signal and in the presence of one...

- -Dan
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