Hi Sylvain and Tom,
Thanks a lot. It works.
So the "Taps" should contain all the matched filter coefficients for
Filter_Size (32) filters instead of just one filter. Then each filter takes
SPS (4) out of them to generate a phase-shifted shaping filter. Hence, we
have a filterbank with different p
On Mon, Apr 27, 2015 at 9:34 AM, Sylvain Munaut <246...@gmail.com> wrote:
> Hi,
>
> I am trying to use Polyphase Clock Synchronization (PCS) block to conduct
>> timing synchronization for QPSK signal with half-sine pulse shaping. In the
>> doxygen document of PCS, it says that the "taps" parameter
Hi,
I am trying to use Polyphase Clock Synchronization (PCS) block to conduct
> timing synchronization for QPSK signal with half-sine pulse shaping. In the
> doxygen document of PCS, it says that the "taps" parameter could be the
> matched filter. Thus, I put the matched filter of half-sine pulse
Hi all,
I am trying to use Polyphase Clock Synchronization (PCS) block to conduct
timing synchronization for QPSK signal with half-sine pulse shaping. In the
doxygen document of PCS, it says that the "taps" parameter could be the
matched filter. Thus, I put the matched filter of half-sine pulse he
On Tue, May 13, 2014 at 11:11 AM, Irfan Ullah wrote:
> Hi all,
>
> I have a problem here with polyphase clock synchronization block when i
> set the output samples per symbol to one the constellation have much more
> ISI and noise and when output sps value is 2 the constellation have no
> noise an
On Thu, May 8, 2014 at 6:07 AM, Irfan Ullah wrote:
> Hi all,
>I am using Polyphase Clock Synchronization block of GRC for symbol
> timing synchronization.currently I am doing simulations of QPSK using
> channel modal block. Ployphase clock synchronizer block work properly means
> it will sync
On Tue, May 21, 2013 at 7:05 AM, Nemanja Savic wrote:
> Hi all,
>
> thank you Tom for that fast response.
> I would like to clarify some additional stuff:
> I want like first to design signal shaping filter. Can you give me some
> guidlines, like 1.5 of the symbol rate or similar. I am currently p
Hi all,
thank you Tom for that fast response.
I would like to clarify some additional stuff:
I want like first to design signal shaping filter. Can you give me some
guidlines, like 1.5 of the symbol rate or similar. I am currently playing
with the filter design tool, quite nice tool, but can't do
On Fri, May 17, 2013 at 12:37 PM, Nemanja Savic wrote:
> Hi all guys again,
>
> After few posts and numerous tries to set up M&M sync block, I finally want
> to give up, and before I start with some kind of ad-hoc approach I want to
> ask for help to setup polyphase Clock Synchronizator.
>
> This
Hi all guys again,
After few posts and numerous tries to set up M&M sync block, I finally want
to give up, and before I start with some kind of ad-hoc approach I want to
ask for help to setup polyphase Clock Synchronizator.
This block is very well documented (by the way, it looks like description
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