I have an application running on USRP1 @ 6.4M SPS. With the processing I
am doing I have an i7 2600k that an just BARELY keep up.
I have been having problems where my app "goes dark", either with all zero
input or garbage. I have not been able to confirm which, but I suspect it
is being zeroed b
On Thu, Jan 19, 2012 at 3:09 PM, George Nychis wrote:
> I am using stream tags to get the timestamp of its corresponding sample in
> general_work(). Now, if I want to calculate the time of an arbitrary
> sample in the incoming sample stream I need to know the decimation rate.
> This tells me ho
I am using stream tags to get the timestamp of its corresponding sample in
general_work(). Now, if I want to calculate the time of an arbitrary
sample in the incoming sample stream I need to know the decimation rate.
This tells me how much clock time is added per-sample. So I can calculate
the o
Optimizing an algorithm is a hard and sometimes counterintuitive
process. You might benchmark the following:
- Gnuradio's atan2 WITHOUT any Volk multiplications (just comment out
the volk mults in your block)
- The Volk multiplications WITHOUT Gnuradio's atan2 (just comment out
the atan2 i
On Thu, Jan 19, 2012 at 10:04 AM, ziyang wrote:
>
> I dont recommend using the extra blocks, that would probably cause more
>> overhead. Looking at gr_quadrature_demod_cf::work, it looks like you can
>> vectorize the operation of the conjugate multiply, then the atan, then
>> the gain scaler. So
I dont recommend using the extra blocks, that would probably cause more
overhead. Looking at gr_quadrature_demod_cf::work, it looks like you can
vectorize the operation of the conjugate multiply, then the atan, then
the gain scaler. So, that would be one for loop that operates on 4
samples at a
Eduardo,
On Jan 19, 2012, at 7:37 AM, Eduardo Lloret Fuentes wrote:
> Hello,
>
> I am working with a USRP2 board and the old GNU Radio driver (not the
> UHD driver) under Ubuntu 10.04. I added a module to the FGPA in the
> file named u2_core.v and I defined some setting registers in order to
> c
On Thu, Jan 19, 2012 at 5:22 AM, Martin Braun wrote:
> On Mon, Jan 16, 2012 at 08:03:52PM -0500, Tom Rondeau wrote:
> > Thinking of the results as one large matrix item probably isn't going to
> work.
> > As you said, there's a system limitation at play here. What if,
> instead, you
> > passed t
Hello,
I am working with a USRP2 board and the old GNU Radio driver (not the
UHD driver) under Ubuntu 10.04. I added a module to the FGPA in the
file named u2_core.v and I defined some setting registers in order to
control it. On the other hand, in the host side, I used the poke32
method to set th
On Mon, Jan 16, 2012 at 08:03:52PM -0500, Tom Rondeau wrote:
> Thinking of the results as one large matrix item probably isn't going to work.
> As you said, there's a system limitation at play here. What if, instead, you
> passed the data along as though it were a stream of floats (or complex
> f
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