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Help on "poly2trellis"
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H?seyin ?anak
Mar 13, 2008, 4:05:03 PM3/13/08
to
İn GSM, convolutional coding uses two generator polynomial:
G0=1+D^3+D^4
G1=1+D+D^3+D^4 ( ETSI TS 145 003 V7.2.0 (2007-10))
How can i make use of these polynomials as an input of
"poly2trellis function" ???
So that i could use "convenc" and "vitdec" functions.
Eduardo Giacoman
Mar 27, 2008, 10:43:02 PM3/27/08
to
I also have the same doubt on how to use the poly2trellis
function in this example, cause I've read but have not that
clear, it seems it should be in octal form but doesn't
appear to give the right code... any help on this??
function in this example, cause I've read but have not that
clear, it seems it should be in octal form but doesn't
appear to give the right code... any help on this??
Regards,
Eduardo
"H?seyin ?anak" <huseyi...@example.com> wrote in message
<frc1df$8ht$1...@fred.mathworks.com>...
Eduardo Giacoman
Mar 28, 2008, 12:31:02 AM3/28/08
to
Alright its poly2trellis(5, [23, 33])
cause delay is 5 and
1 + D3 + D4 = 10011 = 23 octal
1 + D + D3 + D4 = 11011 = 33 octal
cause delay is 5 and
1 + D3 + D4 = 10011 = 23 octal
1 + D + D3 + D4 = 11011 = 33 octal
"Eduardo Giacoman" <eduar...@hotmail.com> wrote in message
<fshlvm$ojs$1...@fred.mathworks.com>...
Hardik
Apr 27, 2008, 2:19:35 PM4/27/08
to
On Mar 27, 10:31 pm, "Eduardo Giacoman" <eduardo...@hotmail.com>
wrote:
> Alright its poly2trellis(5, [23, 33])
> cause delay is 5 and
> 1 + D3 + D4 = 10011 = 23 octal
> 1 + D + D3 + D4 = 11011 = 33 octal
>
> "Eduardo Giacoman" <eduardo...@hotmail.com> wrote in message
>
> <fshlvm$oj...@fred.mathworks.com>...
>
> > I also have the same doubt on how to use the poly2trellis
> > function in this example, cause I've read but have not that
> > clear, it seems it should be in octal form but doesn't
> > appear to give the right code... any help on this??
>
> > Regards,
>
> > Eduardo
>
> > "H?seyin ?anak" <huseyinca...@example.com> wrote in message
> > <frc1df$8h...@fred.mathworks.com>...
>
> > > İn GSM, convolutional coding uses two generator polynomial:
> > > G0=1+D^3+D^4
> > > G1=1+D+D^3+D^4 ( ETSI TS 145 003 V7.2.0 (2007-10))
>
> > > How can i make use of these polynomials as an input of
> > > "poly2trellis function" ???
>
> > > So that i could use "convenc" and "vitdec" functions.
wrote:
> Alright its poly2trellis(5, [23, 33])
> cause delay is 5 and
> 1 + D3 + D4 = 10011 = 23 octal
> 1 + D + D3 + D4 = 11011 = 33 octal
>
>
> <fshlvm$oj...@fred.mathworks.com>...
>
> > I also have the same doubt on how to use the poly2trellis
> > function in this example, cause I've read but have not that
> > clear, it seems it should be in octal form but doesn't
> > appear to give the right code... any help on this??
>
> > Regards,
>
> > Eduardo
>
> > <frc1df$8h...@fred.mathworks.com>...
>
> > > İn GSM, convolutional coding uses two generator polynomial:
> > > G0=1+D^3+D^4
> > > G1=1+D+D^3+D^4 ( ETSI TS 145 003 V7.2.0 (2007-10))
>
> > > How can i make use of these polynomials as an input of
> > > "poly2trellis function" ???
>
> > > So that i could use "convenc" and "vitdec" functions.
I had doubt on it i also got it..thank u so much..but i m confused how
u get G0, G1....??
In my case I am making a trellis coder and decoder for 64-QAM.
Coderate is 5/6 and no. of states 8..
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