Jaydeep,
some comments:
- Check your language/spelling/grammar. Don't underestimate the
impression this leaves!
- Your deliverables are very thin. Please elaborate on them.
- Provide examples for how the widgets are to be used.
- How will you write QA codes for the widgets? Also, why do the QA co
Hi,
> On 19 Mar 2016, at 12:08, tom x wrote:
>
> I tried doubling both, the sample rate to 8MHz and Omega to 4, but still no
> progress. The setup is simply the 802.15.4 PHY block connected to a USRP
> source, listening for an over the air transmission. Can you give some insight
> on how you
Hi Tim,
> On 08 Mar 2016, at 19:07, Bastian Bloessl wrote:
>
> Anyhow, I think that we should, at least, wait for an opinion of one of the
> developers, otherwise you might waste time implementing a new model and
> nobody cares.
>
as far as I understand, you implemented and now maintain thi
Hi,
I want to know other user's performance (avg performance).
When I operate ./benchmark_tx.py -f 1.5G -m qpsk -W 250
--fft-length=256 --tx-gain=31.5, it results up to 60Mbps. (USRP N210, CBX
40MHz, ANT500)
I empirically got fine parameters and generally (small fft length, high
bandwidth, h
Hello,Sorry for late response.Here is my proposal for qt widgets improvement, I
would like to get feedback from mentor
https://github.com/jadd22/GSoC16_Proposal/blob/master/GSoC_Proposal_GNURadio.pdf
Thanks
From: jaydee...@hotmail.com
To: discuss-gnuradio@gnu.org
Subject: GSoC, Qt Widget Improve
Hi,
this [ https://sourceforge.net/projects/automodrecog/ ] is my little
effort about handling IQ files.
The input IQ file is recorded with HDSDR, very nice piece of sw, that
as a good recording scheduler. By the way the file provided can be
played with it. I do also some tests with IQ file produce
Trial and error. It depends on your environment, what you want to test,
and what you want to achieve.
Best regards,
Marcus
On 19.03.2016 14:15, SangHyoeg Kim wrote:
> Hi, I am using ofdm/benchmark example with USRP N210 and CBX 40Mhz
> daughterboard.
>
> I tried to know optimal parameter(bandwid
Ah, sorry, I sent that piece of email a bit too early.
On 20.03.2016 19:07, Henry Barton wrote:
> So every element of the resulting vector will hold the intensity of a
> 1Hz bit of spectrum?
No, not at all. The N-Point DFT gives you N evenly spaced frequencies
that make up the whole Nyquist bandw
Hi Henry,
> So correlating is digitally mixing something with a predetermined
> sequence?
um, no. Not in the sense that I'd use "correlating".
Mixing in this context is simple point-wise multiplication.
> I guess, then, if you have a PSK waveform you might multiply it by
> something, starting at v
So every element of the resulting vector will hold the intensity of a 1Hz bit
of spectrum? Also, you mentioned what would be in X, but what should vector W
contain?
Sent from Windows Mail
From: Marcus Müller
Sent: Sunday, March 20, 2016 1:57 PM
To: discuss-gnuradio@gnu.org
Hi Henry,
Look up the Discrete Fourier Transform in its Matrix form: You take a
vector of samples $x$ and multiply it with a matrix $W$ to get the
discrete Fourier transform of $x$, which I shall denote $X$:
$X=Wx$, with
$W \in \mathbb N ^{N\times N}$ (i.e. a square matrix, representing the
N-poi
So correlating is digitally mixing something with a predetermined sequence?
I’ve been struggling to figure out what correlation means and this seems right.
I guess, then, if you have a PSK waveform you might multiply it by something,
starting at various offsets in the signal, to try and decode i
Yes, pretty much. With the DFT (and the continuous one) you are correlating
the input waveform with harmonically related, complex sinusoids; essentially
for each harmonic you mix it down to DC then sum (integrate). The FFT is
different (I actually don't know how it works, other than it operates o
I’ve read up on the FFT and DSP and I must say I’m impressed that multiplying
two waveforms is the digital equivalent of heterodyning. Am I right in my
understanding that finding frequency components (FFT-ing) is simply multiplying
a series of known sine waves by your input waveform?
Sent
Thank you, Bastian! Your suggestion allowed me to move forward.
The error message appears to be generated only in the min_available_space
function of this file: gnuradio-runtime/lib/block_executor.cc .
I tried to derive an exact expression of the value I need to set for a
given payload size, but
Hi Josh,
First, review it for grammar and spelling.
Second, I'd like to see a little bit more technical content on the viterbi
decoder. To be clear, I'm not looking for theory behind trellis coding or
the viterbi algorithm as much as demonstration of understanding what is
happening in the code.
My project isn’t meant to be 2-way or mobile. Even if my system was meant to be
mobile, I think you’d have to be going 100's of miles per hour to notice any
Doppler shift, right? A car going 60, I’m thinking, would only have to worry
about multipath. My project aims to have multiple broadcasters
On 03/10/2016 08:59 AM, Tom Rondeau wrote:
On Wed, Mar 9, 2016 at 3:24 PM, Tracie Perez
mailto:tracie.pe...@mavs.uta.edu>> wrote:
Hi all,
If I open a new flow graph in GRC and select a QT GUI Bercurve
Sink block, the default parameters create 16 ports (connections)
on the block
Hi, Nikos,
adding a buffer / fifo and matching the mean video rate to the rate of my
transmission system should work.
But i don't really want to match the rates, because i'll have to do that
every time i change something on the source. It can be quite an effort,
too. (Like interpolation the base-
Hi,
2016-03-16 20:36 GMT+01:00 Desmond Crozby :
> What I need is:
> 1) understand the blocks, their purpose and what they do
> 2) learn how to create a minimal scenario using grc
> 3) learn how to create blocks of my own
> 4) create more complicated scenario.
>
> I think there is cruel lack of ex
Christopher,
your proposal is well written, and it includes everything we require on
the wiki page.
My main point of criticism is that the actual work packages
(deliverables) are only very roughly described. Please elaborate on those.
Thanks for your interest!
Cheers,
Martin
On 03/17/2016 03:24
Hi Zhihong,
You are probably an RFNOC newbie like me:(
There is a D"Device 3" block under refnoc. You need to include that in
every rfnoc flow. It has no connections.
HTH,
Nikos
On Fri, Mar 18, 2016 at 2:50 AM, Zhihong Luo wrote:
> To provide more information, all I did was: 1, switching UHD t
Hi all,
I installed the gr-ettus modules and RFNoC version of UHD (
UHD_003.010.rfnoc-316-gb7546712), but when I tried to run the sample GRC,
it runs into this error:
AttributeError: 'module' object has no attribute 'device3'
Can someone point out where I may make a mistake? Thanks in advance!
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