Re: [Discuss-gnuradio] Signal processing in Python

[Achilleas Anastasopoulos]

Max,

it seems like this transmission scheme can be modeled using a finite 
state machine (fsm). Take a look at the gr_trellis section of gnuradio.
There you can find an abstract class to define fsm's and to 
encode/decode their inputs/outputs.

Achilleas

Max Moser wrote:
> Sorry for that, shure i would be happy to provide you some  information 
> i am currently stuck anyways in developing a decoder  because i am not 
> the best in signaling stuff :-)
>
> Ok well i know that the signal is Miller encoded (Aka Delay encoded)
>
> On this website you can see a short description:
>
> http://www.dyneng.com/ipbis_miller.html
>
> Because i know that it is generated by a Texas Instrumets Chip and  
> there is a reference implementation, i know that is for shure miller  
> encoding and it also looks like miller.
>
> The reference encoding does only cover mouse data transmission (not  
> receiving part) so i have to write the decoding for it.
> What i want at the end is just the binary data so that i can dissect  or 
> construct packets. But the missing part in the puzzle currently is  the 
> miller decoding of the received signal
> to gain the binary data stream. (Ups i repeat myself.)
>
> Ok for the sake of clarity i attached two pages of the reference  
> installation doument (Available at the TI website) which descibes the  
> encoding mechanism.
>
> So any help is welcome.
>
> Thanks a lot.
>
> Greetings
>
> Max
>
>
>
>
> On Aug 23, 2007, at 5:36 PM, Achilleas Anastasopoulos wrote:
>
> > Max,
> >
> > could you describe in a bit more detail what is the
> > decoding function you want to implement.
> > Chances are it is already implemented in gnuradio.
> >
> > Achilleas

--
_______________________________________________________
Achilleas Anastasopoulos                        
Associate Professor
EECS Department               Voice : (734)615-4024
UNIVERSITY OF MICHIGAN        Fax   : (734)763-8041
Ann Arbor, MI 48109-2122      E-mail: address@hidden
URL: http://www.eecs.umich.edu/~anastas/        
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