hello again! I posted it on matlab group too, but nobody answered :( so maybe here anybody happen to be a matlab expert.
formatting link
the address You can find the matlab adsl_sim demo, which i reconstructed in order to get the possibility to introduce the burst of errors (as the vector in constant block in transmitter, e.g. [zeros(1,120) ones(1,20) zeros(1,700)]' this works allright when I plot it (scope). however, the convolutional interleaving doesn't protect against this bursts of errors. the BER is always worse, than it is for the non-interleaved path. the first frame seems to be allright, but not a single one more. perhaps it's a timing problem??? if so, how can I inverse the latency put by the XOR - gate???I will appreciate any help!
Best regards, Bogdan