Dear Zealdeal,
you should know how OFDM works: An OFDM symbol is nothing more than the
IDFT of a vector of permutated, possibly padded symbols.
No, for the sake of a simple example, assume your symbol vector is
[1,1,1,...,1]; without doubt, you'll notice that the IDFT of that vector
has an entry t
On 02/17/2015 08:21 AM, zealdeal wrote:
> I'm bit confused here.
>
> You said "In the OFDM example, watch the amplitude of the signal before it
> enters the USRP sink. If it exceeds 1.0, I promise it will clip"
>
> I transmitted OFDM symbols, keeping transmission amplitude as 0.2
>
> Then, on th
glxgears shows 60 fps (using binary nvidia driver).
just to be complete: i had a linker error first when building gnuradio
using pybombs, which i didn't yet mention.
The output is shown below. It seemed not critical to me since it happens
when linking an example.
I 'solved' it by commenting the
Hi All,
I am trying to make the following system.
Packet Generator --> BPSK Modulator > Frequency Hopper
---> UHD Sink
I read that the generic block psk.py can be used as a BPSK modulator so for
the 1st two blocks I use the class psk_mod(generic_mod), setting the
constell
Hi,
You can also look into Tom's blog on channelizers [1]. Some of the grc
files in the blog might not work out of the box (especially those ones with
QT-GUI frequency sink + bus ports). You can simply toggle the busports and
connect it properly and make it work.
[1] http://www.trondeau.com/examp
On Tue, Feb 17, 2015 at 7:22 AM, sreeraj r wrote:
> Hi,
>
> You can also look into Tom's blog on channelizers [1]. Some of the grc
> files in the blog might not work out of the box (especially those ones with
> QT-GUI frequency sink + bus ports). You can simply toggle the busports
> and connect i
On Tue, Feb 17, 2015 at 6:04 AM, Ergeerts Glenn <
glenn.ergee...@uantwerpen.be> wrote:
> glxgears shows 60 fps (using binary nvidia driver).
>
> just to be complete: i had a linker error first when building gnuradio
> using pybombs, which i didn't yet mention.
> The output is shown below. It seeme
On 02/17/2015 09:35 AM, Tom Rondeau wrote:
On Tue, Feb 17, 2015 at 6:04 AM, Ergeerts Glenn
mailto:glenn.ergee...@uantwerpen.be>>
wrote:
glxgears shows 60 fps (using binary nvidia driver).
just to be complete: i had a linker error first when building gnuradio
using pybombs, which i
On Sat, Feb 14, 2015 at 2:17 AM, Abhinav Jadon
wrote:
> Hi ,
> I wrote a Out of Tree module for hamming code using ITPP library . It
> compiled when i ran the cmake.. , make and make install commands without
> error . I used the block in a flowgraph and the python script thus
> generated throws a
On Sat, Feb 14, 2015 at 6:41 PM, Richard Bell
wrote:
> I ran into this myself with a custom Python block. I was unable to resolve
> it. I gave up. Interested to learn a fix as well.
>
I don't think this is a Python block since he's linking against ITPP, but
it's not specified in his original que
Hi ,
Sorry for not providing all the info . I dont know what happened to the
link though .
I used gr_modtool to create the OOT module ;
I wrote the module in C++ and i am using GNU Radio 3.7.6
I have created a git repository :
https://github.com/Jadoobaba/gr-wsi/tree/master/Documents/gr-wsi
ldd on
On Tue, Feb 17, 2015 at 11:04 AM, Abhinav Jadon
wrote:
> Hi ,
> Sorry for not providing all the info . I dont know what happened to the
> link though .
> I used gr_modtool to create the OOT module ;
> I wrote the module in C++ and i am using GNU Radio 3.7.6
> I have created a git repository :
> h
On Thu, Feb 12, 2015 at 5:14 PM, Martin
wrote:
> Hi all,
>
> When I set the decimation of a fir_filter or integrate block with float
> input and output to 262144 or above, gnuradio crashes with a segfault.
> With complex inputs and outputs I get a segfault above 524288.
> with short inputs and ou
Hi all,
I'm looking for the best way to retune the USRP from another block in a running
flowgraph. I've seen the tune callback method used by bin_statistics_f, but I
was wondering if there are other ways to do it. I took a look at message
passing (http://gnuradio.org/doc/doxygen/page_msg_passin
Hello,
When I used eye diagram block (which seems to be a member of WxGUI class),
the following error appeared:
File "/usr/local/lib/python2.7/dist-packages/baz/eye.py", line 98, in
__init__
self.st = gr.message_sink(gr.sizeof_float, msgq, dont_block=1)
AttributeError: 'module' object has n
Hi Mostafa,
which GNU Radio version are you using?
GNU Radio itself (to my knowledge) doesn't come with a dedicated eye
diagram, and it's possible that you're trying to use an out-of-tree
module that was meant for another version of GNU Radio.
You can try to emulate an eye diagram by using the Sco
i have libusb-1.0-0-dev version 1.0.17-1ubuntu2 installed.
However, doing ldd on libuhd.so showed that /usr/local/lib/libusb-1.0.so.0 was
used instead of the version from /usr/lib/ .
I'm not sure how it came there, i suspect from a PPA package i tried installing
before reverting to pybombs.
After
On Tue, Feb 17, 2015 at 11:52 AM, Anderson, Douglas J. <
dander...@its.bldrdoc.gov> wrote:
> Hi all,
>
> I'm looking for the best way to retune the USRP from another block in a
> running flowgraph. I've seen the tune callback method used by
> bin_statistics_f, but I was wondering if there are o
On Tue, Feb 17, 2015 at 6:15 AM, vaibhav kulkarni <
vaibhavkulkarn...@gmail.com> wrote:
> Hi All,
>
> I am trying to make the following system.
>
> Packet Generator --> BPSK Modulator > Frequency Hopper
> ---> UHD Sink
>
> I read that the generic block psk.py can be used as
sir,...I needed the py code of low pass filter. please any one mail me
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