Inter-leaver design for turbo codes

The performance of a Turbo code with short block length depends critically on the interleaver design. There are two major criteria in the design of an interleaver: the distance spectrum of the code and the correlation between the information input data and the soft output of each decoder correspondi ng to its parity bits, This paper describes a new interleaver design for Tu rbo codes with short block length based on these two criteria, A determinis tic interleaver suitable for Turbo codes is also described. Simulation resu lts compare the new interleaver design to different existing interleavers.