As indicated by Dan, what you observe is the transmit side pulse
shaping; the PSK Mod block incorporates both the constellation mapper
as well as pulse shaping.
But, by the way, we've removed that PSK Mod block, I think, from the
upcoming release; seems our tutorials haven't caught up so far. So,
Dear Dan,
Thanks for the response, but I am not including a receiver in this GRC. I
was just creating a QPSK and looking at the constellation. When you use the
Chunks to Symbols" block and plot it, it comes out cleanly, but when you
use the PSK Mod there are samples in the origin.
Just wondering
Actually, PSK MOD has been depreciated.
Instead, you should probable use the Constellation Modulator and
Constellation Object.
Note, you did reproduced the constellation in the tutorial - but its
emphasis is on the hardware.
See the following tutorial instead
https://wiki.gnuradio.org/index.ph
I think this happens when you don't have matched filters?
On Thu, Nov 1, 2018 at 10:45 AM Mercado, Alejandra
wrote:
> Dear GnuRadio folks,
>
> I have a questions about the "PSK Mod" block of GnuRadio. I am following
> the tutorial found here:
> https://wiki.gnuradio.org/index.php/Guided_Tutorial
Dear GnuRadio folks,
I have a questions about the "PSK Mod" block of GnuRadio. I am following
the tutorial found here:
https://wiki.gnuradio.org/index.php/Guided_Tutorial_Hardware_Considerations
(the grc is attached)
I followed the instructions to see the output of PSK Mod for 4
constellation poi
