北京交通大学学报2011，Vol.35Issue(2)：18-24,7.
可快速编码的多码率原模图LDPC码设计
Design of multi-rate protograph LDPC codes with fast encoding
摘要
Abstract
The real application of protograph LDPC codes involves two problems: fast encoding and the encoding complexity. Protograph LDPC codes suit for fast decoding comparing with other LDPC codes, but protograph LDPC codes are not necessarily able to achieve fast encoding. The encoding of existing protograph LDPC codes is done by generate matrix, but the generate matrix of protograph LDPC codes is not sparse. Thus, protograph LDPC codes exists encoding complexity, which makes it difficult for encoder hardware implementation. In order to lower the encoding complexity of protograph LDPC codes, this paper proposes a design of multi-rate protograph LDPC codes with fast encoding; The proposed multi-rate protograph LDPC codes do not exist girth-4s; Furthermore, the fast encoding algorithms of the proposed multi-rate protograph LDPC codes can reduce encoding complexity and simplify encoder hardware. The simulation results in AWGN channels show that the BER and correct error ability performance of the proposed multi-rate protograph LDPC codes is much better than that of GB20600 LDPC codes.关键词
原模图LDPC码/快速编码/BER性能/GB20600码Key words
protograph LDPC codes/ fast encoding/ BER performance/ GB20600 codes分类
信息技术与安全科学引用本文复制引用
王铠尧,肖扬..可快速编码的多码率原模图LDPC码设计[J].北京交通大学学报,2011,35(2):18-24,7.基金项目
国家自然科学基金国际合作项目资助(60811140343) （60811140343）
北京市自然科学基金项目资(4102050) （4102050）
