Re: [Discuss-gnuradio] Verifying Turbo encoder output (was: Re: (no subject)

2015-06-23 Thread Salija P
Thank you very much.. I got it With Regards, Salija.P On Tue, Jun 23, 2015 at 10:00 PM, Achilleas Anastasopoulos < anas...@umich.edu> wrote: > Salija, > > the notation > > interleaver(666) > > is one way to generate a random interleaver with a given seed (666 in this > case). > > The pcc

[Discuss-gnuradio] Verifying Turbo encoder output (was: Re: (no subject)

2015-06-23 Thread Achilleas Anastasopoulos
Salija, the notation interleaver(666) is one way to generate a random interleaver with a given seed (666 in this case). The pccc block requires two FSM (finite state machine) specifications (one for each of the constituent codes) and an interleaver specification. You can give the interleaver sp

Re: [Discuss-gnuradio] Verifying Turbo encoder output (was: Re: (no subject))

2015-06-23 Thread Salija P
I am doing one project in Turbo code. I am trying to get the output in bits and verify with theoritical value.I would like to know the which intearving operation is performing in pccc encoder and decoder (like random interleaving, Matrix etc). what it mean by interleaver(block,666) ? ThankYou for

[Discuss-gnuradio] Verifying Turbo encoder output (was: Re: (no subject))

2015-06-23 Thread Achilleas Anastasopoulos
Salija, since you are working with gr-trellis it is a good idea to run the examples given in the "examples" directory. You can always manually test the examples if you are willing to do the calculations yourself. All you need is the specification of the trellis that makes the 2 constituent encod

[Discuss-gnuradio] Verifying Turbo encoder output (was: Re: (no subject))

2015-06-22 Thread Marcus Müller
Dear Salija, convolutional encoders are hard to check by hand. Typically, you'd try to decode to verify. PCCCs can be made systematic, I'm not sure that's the case for the GNU Radio implementation. Regarding the interleaver: turbocodes rely on adding redundancy calculated from the input data stre