I remember I had the same issue before when testing the benchmark. What I
did to avoid the crash is to start the tx first, and then the rx. It seems
that you are doing it in reverse order, which is reasonable but not working
according to my test.
On Fri, May 1, 2015 at 10:51 AM, Richard Bell
Hi Martin,
Thanks for the FOSDEM 14 video on youtube (although maybe not posted by
you). Your talk is very informative and helpful.
On Thursday, March 19, 2015, Martin Braun martin.br...@ettus.com wrote:
On 19.03.2015 14:11, Henry Jin wrote:
Hi Marcus,
I later added a throttle and time
/gnuradio/examples/digital/, or so). That's a bit more
advanced than your RX.
Greetings,
Marcus
On 03/19/2015 01:34 AM, Henry Jin wrote:
Hi everyone,
I have built a tx and a rx grc flowchart for OFDM using USRP. I found
the range of the amplitude of the input is fairly small in order to
get
On Thu, Mar 19, 2015 at 10:17 AM, Henry Jin henry.ji...@gmail.com wrote:
Hi Marcus,
Thanks for your very detailed comments.
My purpose of testing the PER is to facilitate evaluations on further
modifications of the codes. I'd like to set up a benchmark like the ones I
have shown
Hi everyone,
I have built a tx and a rx grc flowchart for OFDM using USRP. I found the
range of the amplitude of the input is fairly small in order to get it
working (i.e., the USRP at the rx end can successfully decode the packets.)
I wound if anyone can share some thoughts about this? I've
Hi all,
I'm wondering if SNR estimation by using the probe_mpsk_snr_est_xx can be
applied to QAM modulation as well? I checked the source code and found
nothing specific tied to MPSK modulation. Also, I found Tom has a blog
about SNR estimator years ago
. Of course, since we have to add
some customized modules, the best way is to directly work on the python
script.
Best
Henry
On Tue, Dec 3, 2013 at 10:00 PM, Henry Jin henry.ji...@gmail.com wrote:
Hi,
I tried to build a simple flow graph of DPSK modulation and demodulation.
The result is verified
and bytes_received has 995328 bytes.
The difference is probably that 1 million samples from random source isnt
even to the payload length of packet encoder.
On Sun, Dec 8, 2013 at 8:57 PM, Henry Jin henry.ji...@gmail.com wrote:
Hi all,
As per previous discussions, I have changed my design as shown
. Anyone has any
thoughts on this?
Henry
Date: Thu, 12 Dec 2013 09:26:48 +0100
From: Martin Braun (CEL) martin.br...@kit.edu
On Wed, Dec 11, 2013 at 04:15:11PM -0700, Henry Jin wrote:
I tried to use digital_bert_tx.py and digital_bert_rx.py to test the BER
performance of different modulations
Hi
I tried to use digital_bert_tx.py and digital_bert_rx.py to test the BER
performance of different modulations. The command I use is
./digital_bert_tx.py --tx-freq=5.1e9 --tx-gain=30 -S 8 --mod-code=gray -m
bpsk. The results for BPSK is good enough. When SNR is above 20, the BER is
around
attached a
screenshot comparing the two files from file sinks.
https://www.dropbox.com/s/9203fvigi3wohmh/Screenshot%20from%202013-12-08%2021%3A52%3A48.png
Please give me some suggestions if you have any thoughts. Thanks.
Henry
On Thu, Dec 5, 2013 at 2:39 PM, Henry Jin henry.ji...@gmail.com wrote
to do.
Sorry I couldn't be of more help.
Michael
On Wed, Dec 4, 2013 at 1:31 PM, Henry Jin henry.ji...@gmail.com wrote:
On Wed, Dec 4, 2013 at 12:13 PM, Michael Berman mrberma...@gmail.com
wrote:
Looking at your flowchart in the original post, you have an Unpacked to
Packed block after
.
--n
On Tue, Dec 3, 2013 at 9:00 PM, Henry Jin henry.ji...@gmail.com wrote:
Hi,
I tried to build a simple flow graph of DPSK modulation and demodulation.
The result is verified using the Error Rate module. The link shows the flow
I'm using.
https://www.dropbox.com/s/jwmmttyi4es4alf
things clearer. But maybe it makes no difference. I
remember in one of Tom's tutorial, he said as long as there is one throttle
in the flow, then all the units are throttled.*
Michael
On Wed, Dec 4, 2013 at 9:52 AM, Henry Jin henry.ji...@gmail.com wrote:
I tried again replacing the DPSK
Hi,
I tried to build a simple flow graph of DPSK modulation and demodulation.
The result is verified using the Error Rate module. The link shows the flow
I'm using.
https://www.dropbox.com/s/jwmmttyi4es4alf/Screenshot%20from%202013-12-03%2021%3A50%3A58.png
I know that the output of demod module
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