New interleaver design algorithms with enhanced B.E.R. performances [articol]

Abstract

This paper investigates some aspects of turbo encoder and decoder parameters design effects on the overall system performances. A new interleaver structure is presented, which, combining the block and hibrid strategies, achieves very good BER performances using low complexity structure. Based on an interactive Matlab simulation program that can accommodate several encoder structures, interleaver types and decoding algorithms, extended simulations has been developed and important results are highlighted with respect to different parameter influence on the system performances (evaluated in terms of Bit-Error-Rat) and complexity.