Re: [Discuss-gnuradio] gr-trellis convolutional coder FSM

2012-06-18 Thread Clemens Hopfer
Hello Achilleas, thanks for your reply, On Tuesday 12 June 2012 19:53:10 Achilleas Anastasopoulos wrote: > puncturing is not part of the FSM class. ok, thanks for the clarification, that caused the biggest confusion. > You can implement it as a simple memoryless device: > eg, if i want to punct

Re: [Discuss-gnuradio] gr-trellis convolutional coder FSM

2012-06-12 Thread Achilleas Anastasopoulos
Clemens, puncturing is not part of the FSM class. You can implement it as a simple memoryless device: eg, if i want to puncture every third bit, then the device accepts 3bits as inputs and outputs the first two. If you can give me more details on what exactly you want to implement i may be able t

[Discuss-gnuradio] gr-trellis convolutional coder FSM

2012-06-08 Thread Clemens Hopfer
Hi, I'm working on a modulator using a punctured (non-recursive) convolutional coder based on a 1/2 rate mother code with length 7. However I find the documentation of gr-trellis pretty hard to read, I don't really understand how punctuation should actually be implemented. Are there any additi