I went ahead and locked the USRP2 to my signal analyzer's reference clock
and that seemed to knock the error down to about 11-14%, which is obviously
much improved.
However, I then looked at the signal on an oscilloscope and it looks like
the USRP2 is sending out short bursts of data instead of a
On 07/07/2010 11:43 AM, Garrett Wenger wrote:
I am not quite sure what data rate I am getting. I've been using a
signal analyzer to receive and demod what I'm transmitting and it can
generally pick up the bit sequence that I am now sending out, but I get
an error rate the fluctuates from about 5
I am not quite sure what data rate I am getting. I've been using a signal
analyzer to receive and demod what I'm transmitting and it can generally
pick up the bit sequence that I am now sending out, but I get an error rate
the fluctuates from about 5% all the way up to 70% or higher.
My cpfsk mod
On 07/07/2010 08:32 AM, Garrett Wenger wrote:
Hi all,
A few days ago I made a simple program using grc to fsk modulate and
transmit a pn sequence at 10kbps. Since I was using a USRP1, I set my
samples per symbol to 25 and the interpolation to 512 to get this data
rate.
The place I work at just r
On 07/07/2010 09:05 AM, Garrett Wenger wrote:
Marcus,
First of all, thanks for responding so quickly.
I looked on the USRP2 faq and I did see that the DAC rate was listed as
400 MS/s, but later on in the faq it says:
The FPGA talks to the DAC at 100 MS/s just like it talks to the ADC
at 100
Marcus,
First of all, thanks for responding so quickly.
I looked on the USRP2 faq and I did see that the DAC rate was listed as 400
MS/s, but later on in the faq it says:
The FPGA talks to the DAC at 100 MS/s just like it talks to the ADC at
100 MS/s. The interpolation from 100 MS/s to 400 MS/
On 07/07/2010 11:32 AM, Garrett Wenger wrote:
> Hi all,
> A few days ago I made a simple program using grc to fsk modulate and
> transmit a pn sequence at 10kbps. Since I was using a USRP1, I set my
> samples per symbol to 25 and the interpolation to 512 to get this data
> rate.
>
> The place I wor
Hi all,
A few days ago I made a simple program using grc to fsk modulate and
transmit a pn sequence at 10kbps. Since I was using a USRP1, I set my
samples per symbol to 25 and the interpolation to 512 to get this data rate.
The place I work at just received a couple USRP2's, so I am trying to get
