Hi
Thank you for your help.
Now i`m trying to use only the pccc encoder and pccc decoder blocks, without
modulation.
I`m using the awgn1o2_8.fsm for the fsm parameter because i need a state
machine with those characteristics, and i`m using the error rate block to
make sure that the source is the
You are using the pccc decoder in an incorrect way.
Please see attached corrected grc file:
there are two ways to use the pccc decoder
(i) either as a combo or (ii) in conjuction with trellis metrics.
I have provided in your file both ways.
Regarding you second question about whether you can
Hi.
I understand the use of the trellis metrics block for the calculation of the
costs, but I don`t understand the use of the constellation parameter, thats
why I didn`t use that block before, I though it only was used in the cases
were modulation was made.
Thank you for correct my file.
--
Since your constellation is complex, then its dimensionality (in the
chunks_to_symbos block, as well as in the PCCC decoder block)
should be set to 1 (you are now have it at 2).
The convention is that the chunks_to_symbols array is arranged as
a11, a12, ... a1d, a21 a22,...,a2d,... aM1, aM2,
There are several issues with your code:
1) a PCCC encoder (as any digital communication encoder) cannot accept a
sine wave as its input!
it only accepts discrete information.
In this case it should be numbers {0,1,2,...,X-1} where X is the input
alphabet size of your fsm's.
2) The output
HI
Thank you very much for your response, you really helped me.
In my last post, i made a mistake. The fsm that i wanted to use is
fsm=1,2,[13,11]. If i understood well, i should use a 16qam modulation.
But i`m using an error rate block, just like in the example pccc.grc (only
that i`m not using
Hello.
i`m new at this. First i apologize for my english.
I`m trying to use the pccc encoder but i`m having troubble with the
interleaver parameter. My flow graph:
vector source --pccc encoder --chunks to symbols --pccc decoder combo
Some parameters:
fsm1=fsm2= 1,3,[13,11]
symbol table= -7,0,
