On 03/07/2014 18:41, Bill Dailey wrote:
> Can you explain this a little. I tried that the other night and
> couldn't get it to do anything. I suspect I am setting the bandwidth
> incorrectly or something. I tried that pi/200 - 2pi/100 thing.
Hello Bill,
first, I recommend you to address your repl
On Tue, Jul 1, 2014 at 12:33 PM, Daniele Nicolodi
wrote:
> On 27/06/2014 20:51, Daniele Nicolodi wrote:
> > This question is not strictly GNURadio related, but I hope to find
> > people more knowledgeable than me here...
> >
> > I have a signal x(t) at a carrier frequency fc which is phase modula
On 27/06/2014 20:51, Daniele Nicolodi wrote:
> This question is not strictly GNURadio related, but I hope to find
> people more knowledgeable than me here...
>
> I have a signal x(t) at a carrier frequency fc which is phase modulated.
> The phase modulation itself is modulated at a modulation freq
Hello,
This question is not strictly GNURadio related, but I hope to find
people more knowledgeable than me here...
I have a signal x(t) at a carrier frequency fc which is phase modulated.
The phase modulation itself is modulated at a modulation frequency fmod:
x(t) = Eo cos(2 pi fc t + m(t))
Could you elaborate on this statement?
BTW, the fine point above is that you cannot set theta_hat(t)=arg(r(t)),
> because this assignment does NOT satisfy the BW constraints of your initial
> signal theta(t) or theta_hat(t).
Are you saying that theta_hat(t) should be quantized, and therefore not
Which, of course is completely true.
/Mikael
Achilleas Anastasopoulos wrote:
Just to make a note on the more theoretical aspect of this problem:
If you want to avoid all complications arising from the discontinuous
arctan, you can (and technically/theoretically you should)
work with the act
Just to make a note on the more theoretical aspect of this problem:
If you want to avoid all complications arising from the discontinuous
arctan, you can (and technically/theoretically you should)
work with the actual incoming signal r(t)=exp(j theta(t)) + n(t)
and its hypothesized estimate s_
Achilleas Anastasopoulos wrote:
arctan (imag(out)/real(out)) plus some filtering to remove out of band
noise (it would be nice also to make sure you avoid discontinuities
inherent in the arctan function)...
I would like to add that you should use four quadrant arctan, i.e. add
or subtract pi
arctan (imag(out)/real(out)) plus some filtering to remove out of band
noise (it would be nice also to make sure you avoid discontinuities
inherent in the arctan function)...
Achilleas
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On 10/05/2011 05:05 PM, Phelps Williams wrote:
Excuse my ignorance but I need this spelled out for me. I am trying
to come up with a phase demodulator to effectively perform the
opposite function as the gr_phase_modulator_fc class. According to
the code this is effectively doing output=comple
Excuse my ignorance but I need this spelled out for me. I am trying to come
up with a phase demodulator to effectively perform the opposite function as
the gr_phase_modulator_fc class. According to the code this is effectively
doing output=complex(cos(in*sensitivity), sin(in*sensitivity)).
Is th
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