viterbi decoder

[bharathi]

hi all,

i'm doing my project in viterbi decoder design , i have a
convolutional encoder out put like 11 10 01 01 10 (for ex).if it is
transmitted through channel ,the datas may be distorted like 10 10 00
01 10 due to noise.what kind of noise generator can be used for this
..how can i achieve this through VHDL representation.i don't want the
datas to be in fully changed condition ,some of the datas may
change.suggest me some thing

 

[kwaj]

matlab has a utility which allows you to manipulate VHDL code and its
corresponding data. You could use that utility/function to generate data
with random noise added to it (I would suggest a Rayleigh based number
generator) and use it to test the functionality of your decoder.


"bharathi" <bharathiii@rediffmail.com> wrote in message
news:22aa3c17.0402252234.48d58019@posting.google.com...

hi all,

i'm doing my project in viterbi decoder design , i have a
convolutional encoder out put like 11 10 01 01 10 (for ex).if it is
transmitted through channel ,the datas may be distorted like 10 10 00
01 10 due to noise.what kind of noise generator can be used for this
.how can i achieve this through VHDL representation.i don't want the
datas to be in fully changed condition ,some of the datas may
change.suggest me some thing