coding theory homework about turbo decoding -- 3

For this homework, you need to refer to the handout-file: TeachTubboCode_Ex1_Ver2.pdf, 。 Then, we continue the BCJR decoding from the end of that file. Let us
perform a few calculations.
(a) Prob(“message-bit 7 of MessageSeq_DEC2” = 1) = ?
(b) Let us perform the next iteration. Now, Decoder 2 is paasing its extrinsic information to
Decoder 1, and then this extrinsic information is adopted as the a-priori information of Decoder
1. Find the value of the “delta” metric for all of the branches (totally eight) corresponding to
message-bit 4 of MessageSeq_DEC1.