[Discuss-gnuradio] dvb-t inner interleaver

[Vincenzo Pellegrini]

hi everybody, 
so far I'm working upon a GNURadio implementation of one of the
functional block of the DVB-t standard, the "Inner interleaver", 

my trouble in this moment is that such functional block needs to perform a permutation on a 1512-bits length chunk:
 
i've tried to modify the step of this loop, this way:



STEP=1512;

for (int i= 0, i<= noutput_items, i+=STEP)



for (int w= 0, w<= 1511, w+=1) out[i+w]=..




but this doesn't seem to work properly. ( I guess because I'm trying to
reference items too far away from my current position in  the
stream).

another thing i've tried is:



for (int i= 0, i<= noutput_items, i+=1)

for (int w= 0, w<= 1511, w+=1) out[1512*i+w]=...



but this even segfaults at runtine.


which is the wise way I should do interleaving on such big chunks in GNURadio?

thank you guys,
and best regards



-- 
Vincenzo Pellegrini