Hello,
I'm having an issue with tutorial3 in https://github.com/gnuradio/gr-tutorial,
which I have cloned and put into a directory called solutions. I have tried
this on xubuntu, 3 different installations of ubuntu 14.04 [virtual machines],
and using the GNURadio Live USB. I have tried install
Use "unknown PPS" on both of them. The MIMO cable shares both REFCLOCK
and 1PPS signals, so they will both be synchronized to the same time.
On 2017-09-12 16:13, John Shields wrote:
> Thanks Derek,
> No, I hadn't been power cycling between the runs - good point, obviously, I
> should have.
>
Hi Phil,
Of course, you are right, but Trellis is computationally more
expensive than a straight change of the modem parameters. The DMR
software stack is huge, compared to what a small community of largely
open source enthusiasts can come up with. (my problem with DMR as a
radio equipment standar
Thanks Derek,
No, I hadn't been power cycling between the runs
- good point, obviously, I should have.
In terms of the 10 MHz and 1 pps references, in
the configuration I was testing, I don't believe so in that I had the
MIMO cable disconnected. M
Wouldn't the ISI largely (theoretically, completely) be ameliorated by
trellis decoding? And I'm not talking about FEC, but rather incorporating
the ISI into the expected Cartesian coordinates for each symbol.
I did some experimentation with this technique on BPSK31, and I was able to
get a little
> Any ideas would be highly welcome :)
Most likely you have an old uhd or uhd devel headers installed somewhere.
Cheers,
Sylvain
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Hi,
Still building gnuradio from source (latest master from github) fails, while
latest maint builds just fine. OS is Kubuntu 16.04 with all updates, and as
it it uhd related, uhd is also latest master from the official Ettus github.
And I want to add that I was able to use such a setup for years,
Hi,
In this post: http://www.rowetel.com/?p=4650 David was asking the question
why the 4FSK modem used by the DMR standard seemed to be performing so
poorly, especially as compared to his ideal 4FSK modem.
I was curious myself, so I implemented both and analysed them using my
modified version of G
Hi,
In my Gnuradio based application QRadioLink, I implemented 4FSK binary
slicing using the constellation decoder, specifically
gr::digital::constellation_expl_rect and
gr::digital::constellation_decoder_cb.
Is this the recommended way to recover 4FSK levels, or is there some
other block that sho
