Performance Analysis on Interleaver Designs in Turbo-Codes

• Main Author: 黃文隆
• Other Authors: 白宏達
• Format: Others
• Language: zh-TW
• Published: 2004
• Online Access: http://ndltd.ncl.edu.tw/handle/71553699563887185274

碩士 === 國立臺灣科技大學 === 電機工程系 === 92 === Since turbo-codes can present the correcting performance close to the theoretical limit predicted by Shannon for sufficiently large interleaving sizes; it plays a very important role in present digital communication systems. In turbo-codes, the interleaver decides the size of memory and influences time cost in decoding immediately; therefore, the design of the interleaver becomes an important issue. In this paper, several designed methods, namely random, rectangular, golden relative prime, golden, dithered golden and internal method, are analyzed and compared. Investigated by simulation, we find internal and dithered golden method is the best interleaver. Performances of random and rectangular method are approximate Otherwise, golden relative prime method have the good performance in the high code rate.