Dear all,
I tried to run the lte_top_block_siso.grc and I got this error :
/gr/runtime_swig.py", line 4574, in primitive_connect
return _runtime_swig.top_block_sptr_primitive_connect(self, *args)
ValueError: itemsize mismatch: Channel Estimator0:0 using 576, PBCH
Decoder0:1 using 480
Please
: *as soon as possible *
Candidates are invited to contact *Rafik Zitouni*
firstname.lastn...@vedecom.fr
Best,
--
<http://www.ece.fr/>Rafik
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Hi,
I am using gnuradio in a second machine where I had installed gnuradio
version 3.7.12git-126-g37d373ac.
I tried to run wifi_tx and wifi_transceiver and I obtained the following
error:
tb = top_block_cls()
File "/home/rafik/Workspace/gr-ieee802-11-next/examples/wifi_tx.py", line
153,
22:49, Cinaed Simson wrote:
> > On 07/17/2017 09:28 AM, Rafik ZITOUNI wrote:
> >> Dear all,
> >>
> >> I have an issue that appears when I'm running gdb.
> >>
> >> I obtained the following message.
> >>
> >> 0x7fcb038c6c5d in
Dear all,
I have an issue that appears when I'm running gdb.
I obtained the following message.
0x7fcb038c6c5d in poll () at ../sysdeps/unix/syscall-template.S:81
81 ../sysdeps/unix/syscall-template.S: No such file or directory.
Could you have any idea how to fix this issue?
Best,
--
r should look like. In digital
> domain, we get all the "logic" coming cheap, so, yeah, why not have a few %
> of symbols being used for phase recovery and skip the phase error loop – we
> can double-use them to estimate more of the channel than just the phase, so
> that's not such
Thanks Marcus,
So, how can I see my constellation points with 16 QAM receiver ?
Regards,
2017-07-17 12:26 GMT+02:00 Marcus Müller <muel...@kit.edu>:
> No.
>
> That's not going to work out, mathematically.
>
> Best regards,
>
> Marcus
>
> On 07/17/2017 10:29
Dear Cinaed,
The costas loop works only with BPSK, QPSK and 8PSK.
Is it possible to change the actual costas loop and add the 16 QAM.
Best regards,
2017-07-14 0:46 GMT+02:00 Cinaed Simson <cinaed.sim...@gmail.com>:
> On 07/13/2017 06:16 AM, Rafik ZITOUNI wrote:
> &
2/2017 09:55 AM, Rafik ZITOUNI wrote:
> > Dear Cinaed,
> >
> > Thanks for your answer.
> >
> > I tried with my Tx and it works fine with a constellation, but with my
> > receiver symbols or constellation_decoder, digital.qam_16()[1] gives me
> >
(digital.qam_16()[1])
Best,
2017-07-12 2:26 GMT+02:00 Cinaed Simson <cinaed.sim...@gmail.com>:
> On 07/11/2017 05:13 AM, Rafik ZITOUNI wrote:
> > Dear gnuradio users,
> >
> > I am trying to use digital_chunks_to_symbols to reconstruct block by
> > block my QAM mo
Dear gnuradio users,
I am trying to use digital_chunks_to_symbols to reconstruct block by block
my QAM modulator.
Please could you give me an idea how to set the constellation points in
Symbol Table field? I can do it with BPSK, QPSK and 8PSK using
constellation[0].points,
Thank you so match for your detailed and accurate answers.
I received a second answer from Phil Frost in which he explained my result.
So now i am doing same thing with QPSK and 8PSK.
Cheers,
2017-07-04 14:25 GMT+02:00 Phil Frost <ind...@bitglue.com>:
> On Tue, Jul 4, 2017 at 6:30
0, then your receiver did not make
> a single bit error, if you get BER=0.5, then every second bit is wrong. So,
> that estimator is pretty much perfect.
>
> If you remove the phase synchronization (i.e. the costas loop) from your
> receiver, you make it a worse receiver. Then, your BER
>
> On 07/04/2017 11:31 AM, Rafik ZITOUNI wrote:
>
> Sorry I missed to add the flow graph.
> Here is attached.
>
> 2017-07-04 11:29 GMT+02:00 Rafik ZITOUNI <rzito...@gmail.com>:
>
>> Marcus,
>>
>> You find attached my flow graph with Tx and Rx. I kno
t this point :)
>
> Best regards,
>
> Marcus
>
> On 07/04/2017 11:20 AM, Rafik ZITOUNI wrote:
>
> Thank you Marcus for your answer !
>
> My BER and SNR are calculated and obtained using MPSK SNR Estimator Probe
> and Error Rate blocks. I obtained two points, which
k!
>
> So, what's wrong with the BER and the SNR estimate?
>
> Best regards,
>
> Marcus
>
> On 07/03/2017 11:29 PM, Rafik ZITOUNI wrote:
>
> Dear all,
>
> I translate the /gr-digital/examples/narrowband/digital_bert_tx.py and
> the /gr-digital/examples/nar
Dear all,
I translate the /gr-digital/examples/narrowband/digital_bert_tx.py and the
/gr-digital/examples/narrowband/digital_bert_rx.py python source codes to
GRC flow graphs. The objective is to get more graphical possibilities with
a GRC. My flow graph gives a fine result of BER and SNR for
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