Re: about Turbo code!!!
Hi,
Maybe you can search on google with keyword "turbo code tutorial" and find some useful links. There should be several tutorial papers on turbo code around. Study the basic idea first and then punctured code. A good understanding on convolutional codes and viterbi decoding helps a lot.
I remember there's a book named "error-correction coding for digital communication" which explains those communication algorithms quite well.
Martin