VHDL - viterbi decoder

02-26-2004, 06:34 AM

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

bharathi

02-26-2004, 07:01 AM

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" <> wrote in message
news: om...
> 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

raman · 10-31-2006, 03:04 PM

HI I AM DOING MY PROJECT I NEED VITERBI DECODER VHDL/VERILOG CODE FOR IMPLEMENTING BPSK DEMODULATOR VERY URGENTLY CAN U MAIL ME PLZ SUBMISSION DATE IS NOV 10TH I AM STUCK UP ,I AM IN BADLY NEED OF IT PLZ HELP ME OUT BY MAILING ALL THE CODE RELATED TO VITERBI DECODER TO THIS EMAIL ID- or

raman

02-26-2004, 07:01 AM	#2
kwaj Posts: n/a	Re: viterbi decoder 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" <> wrote in message news: om... > 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

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02-26-2004, 06:34 AM	#1
	viterbi decoder 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 bharathi

10-31-2006, 03:04 PM	#3
raman Junior Member Join Date: Oct 2006 Posts: 1	HI I AM DOING MY PROJECT I NEED VITERBI DECODER VHDL/VERILOG CODE FOR IMPLEMENTING BPSK DEMODULATOR VERY URGENTLY CAN U MAIL ME PLZ SUBMISSION DATE IS NOV 10TH I AM STUCK UP ,I AM IN BADLY NEED OF IT PLZ HELP ME OUT BY MAILING ALL THE CODE RELATED TO VITERBI DECODER TO THIS EMAIL ID- or raman