期刊名称：International Journal of Research and Innovation in Computer Engineering
电子版ISSN：2249-6580
出版年度：2011
卷号：1
期号：3
页码：62-67
出版社：Innovation Science Publications
摘要：Low density parity check (LDPC) codes are a class of forward error correcting linear block codes which give near-capacity performance. The goal of the present paper is to compare the bit error rate performance of the various techniques of iterative message-passing decoding algorithms based upon hard and soft decision. The sum-product algorithm, which is based on soft-decision decoding, outperforms the bit-flip algorithm, which depends on hard-decision decoding. Our simulations show that the performance of LDPC codes improves with increasing blocklength and number of iterations for both decoding algorithms.
