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
wrot
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 wrote:
> On 19.03.2015 14:11, Henry Jin wrote:
>
>> Hi Marcus,
>>
>> I later added a throttle
Henry
On Thu, Mar 19, 2015 at 10:17 AM, Henry Jin 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
> ha
ure, was too lazy to look into the source code
just now) that the OFDM implementation (you're using the older one, the
newer one is cooler) doesn't do much on the receiving side to recover
the signal.
Have a look at the rx_ofdm example (in
/usr/[local/]share/gnuradio/examples/digital/, or so
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 been
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
http://www.trondeau.com/grcon12-hackfest/201
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 wrote:
> Hi,
>
> I tried to build a simple flow graph of DPSK modulation and demodulation.
> The result is verified using th
..r.
>
> bytes_sent file has 999424 bytes
> 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 wrote:
>
>> Hi all,
>
hough. Anyone has any
thoughts on this?
Henry
Date: Thu, 12 Dec 2013 09:26:48 +0100
From: "Martin Braun (CEL)"
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 modulatio
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 10^(-1
erstood, I 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 wrote:
> Th
rying to do.
> Sorry I couldn't be of more help.
>
> Michael
>
>
> On Wed, Dec 4, 2013 at 1:31 PM, Henry Jin wrote:
>
>> On Wed, Dec 4, 2013 at 12:13 PM, Michael Berman
>> wrote:
>>
>>> Looking at your flowchart in the original post, you
random source. This may
> help with keeping the data a little more somewhat aligned.
>
>
*Yes, this could make 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.*
> encoding.
>
> --n
>
>
> On Tue, Dec 3, 2013 at 9:00 PM, Henry Jin 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&
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
15 matches
Mail list logo