[eagle] Re: TeamSpeak conference for Tuesday 16 Jan

Matt Ettus matt at ettus.com
Tue Jan 9 19:47:55 PST 2007


Frank Brickle wrote:
> Phil Karn wrote:
>
>   
>> I was going to model phase noise as 1/f^2, but Bob pointed out that the 
>> integral of that expression bounded at zero (DC) is undefined. So we 
>> need another, more realistic model of oscillator phase noise if we're 
>> going to compute its effect on digital demodulation.
>>     

Typically you only take a model like this down to about 1Hz.  Below 1 Hz
it can be considered flat or even zero.  We don't much care about the
phase noise below 1 Hz since the symbol rates are so much higher than this.

Matt


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