encoding and decoding of turbo codes using bcjr algorithm

encoding the given message with turbo encoder consisting of recursive convolution encoder, interleaver,concatenated coding blocks. when we send the message of k bit length we get 3 outputs. 1 is systematic message which is exactly the message we sent(vs) and second one is (vp1) which is resulted from rsc encoder and the third one is (vp2) which is resulted from interleaver and rsc encoder . turbo decoder : it is a soft decoder with two maximum a posterior(MAP) decoder which works on BCJR algorithm and a feedback path here we uses 2 BCJR decoders and we give the inputs obtained from the encoder to get the output as message and this output is given to the other bcjr decoder and this feedback process continues for certain iterations. NOTE: I CAN PROVIDE THE ENTIRE BLOCK DIAGRAMS OF WHAT WE ARE DOING .