I'd suggest using the quadrature modulator block to build a better TX side.
Iterate on that until your signal looks correct. Then you can focus on the
RX.
On Wed, Feb 14, 2018 at 3:14 AM samuel verdon wrote:
> Hello everybody,
>
> I am building a FSK receiver to recover data on UHF. The bit rate
On October 18, 2016 3:39:28 PM EDT, Andy Walls
wrote:
>
>It works because the spectrum of a GMSK signal has two spectral peaks
>spaced equidistant from the center frequency.
Oops. "... spectrum of a *squared* GMSK signal has two spectral peaks ..."
__
> From:
> Ellis, Duane
>
>
> Date:
> Tue, 18 Oct 2016 18:57:33 +
>
> __
> Hi,
>
> I've been working towards an FSK demodulator scheme using GNU radio (more
> spe
Hi Marc,
On 20.06.2014 09:38, Marc Miller wrote:
> ADC in N210 is sampling at 100Msps, so you are saying that I can get
> processing gain (better SNR) if I set the USRP sink sample rate higher
> than IMsps i.e usrp_sink.sample_rate(3.125e6) instead of
> usrp_sink.sample_rate(1e6) . Right ? Also I r
On Thu, Jun 19, 2014 at 12:35 PM, Marcus Müller
wrote:
> Hi Marc,
>
> > Currently, I am trying to implement correlation receiver using FIR
> filters. I am looking into polyphase filterbank channelizer to implement
> correlation, but currently unable to do so because I currently do not
> know how
Hi Marc,
> Currently, I am trying to implement correlation receiver using FIR
filters. I am looking into polyphase filterbank channelizer to implement
correlation, but currently unable to do so because I currently do not
know how to assign taps for channelizer.
I should have pointed you at Tom's
> Hi Marc,
>
> demod:
> both can be implemented in GNU Radio. Correlation of course is more
> computationally intensive; I haven't thought about 4-FSK so far, but I
> guess for quadrature demodulation, you'd need multiple branches to
> distinguish the possible symbols. There are other approaches (e
Hi Marc,
demod:
both can be implemented in GNU Radio. Correlation of course is more
computationally intensive; I haven't thought about 4-FSK so far, but I
guess for quadrature demodulation, you'd need multiple branches to
distinguish the possible symbols. There are other approaches (e.g. polar
dis
