u.org] On Behalf
Of Nowlan, Sean
Sent: Tuesday, September 15, 2015 3:40 PM
To: Dan CaJacob ; anas...@umich.edu
Cc: Discuss-gnuradio@gnu.org
Subject: Re: [Discuss-gnuradio] Demodulating CPFSK with Viterbi algorithm using
gr-trellis
Sure. Here was the pulse normalization fix Achilleas suggeste
...@gmail.com]
Sent: Tuesday, September 15, 2015 2:36 PM
To: Nowlan, Sean ; anas...@umich.edu
Cc: Discuss-gnuradio@gnu.org
Subject: Re: [Discuss-gnuradio] Demodulating CPFSK with Viterbi algorithm using
gr-trellis
Hi Sean,
Any chance you can share your work?
On Tue, Sep 15, 2015 at 2:33 PM Nowlan, Sean
umich.edu]
> *Sent:* Saturday, September 12, 2015 1:21 PM
> *To:* Nowlan, Sean
> *Cc:* Discuss-gnuradio@gnu.org
>
>
> *Subject:* Re: [Discuss-gnuradio] Demodulating CPFSK with Viterbi
> algorithm using gr-trellis
>
>
>
> Sean,
>
> I guess there was a missing normal
asopoulos
Sent: Thursday, September 10, 2015 1:28 PM
To: Discuss-gnuradio@gnu.org<mailto:Discuss-gnuradio@gnu.org>
Subject: Re: [Discuss-gnuradio] Demodulating CPFSK with Viterbi algorithm using
gr-trellis
Sean,
I just wanted to add to the previous answer:
Indeed gr-trellis (and the fsm clas
illeas Anastasopoulos
> *Sent:* Thursday, September 10, 2015 1:28 PM
> *To:* Discuss-gnuradio@gnu.org
> *Subject:* Re: [Discuss-gnuradio] Demodulating CPFSK with Viterbi
> algorithm using gr-trellis
>
>
>
> Sean,
>
> I just wanted to add to the previous answer:
: discuss-gnuradio-bounces+sean.nowlan=gtri.gatech@gnu.org
[mailto:discuss-gnuradio-bounces+sean.nowlan=gtri.gatech@gnu.org] On Behalf
Of Achilleas Anastasopoulos
Sent: Thursday, September 10, 2015 1:28 PM
To: Discuss-gnuradio@gnu.org
Subject: Re: [Discuss-gnuradio] Demodulating CPFSK with
One quick correction on my previous email:
every line corresponds to the current state and every column to an input.
The entry is a number from 0 to O-1 (where O is the output alphabet
cardinality).
How this index is translated to an actual signal IS NOT PART OF THE FSM
DEFINITION but par
Sean,
I just wanted to add to the previous answer:
Indeed gr-trellis (and the fsm class specifically) has a built in
constructor for generating the FSM corresponding to ANY CPM scheme.
It only requires three parameters as explained in the comments
in the file fsm.cc
The constructed FSM is NOT bas
Hi Sean,
Don't really know much about this but I played around with the FSM code
a little. Outputs would read the same as the state transitions:
if in state 0 and a 0 is received, output A, else output B
Using the fsms generation routines, I got a different shape FSM than
yours (higher outpu
I'm trying to demodulate a CPFSK signal using the Viterbi algorithm. The
gr-trellis module seems to have most of the components I'll need, but I'm
having trouble figuring out how to wrangle my problem into the FSM format.
Basically, I have a binary CPFSK signal with a modulation index, h=25/3.
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