针对低密度奇偶校验码(简称LDPC码)的直接编码运算量较大、复杂度高,根据Richardson和Urbanke(RU)建议的编码方案,介绍一种适于在FPGA上实现,利用有效校验矩阵来降低编码复杂度的LDPC编码方案,给出了编码器设计实现的原理和编码器的结构和基本组成。在QuartusⅡ7.2软件平台上采用基于FPGA的VHDL语言实现了有效的编码过程。结果表明:此方案在保证高效可靠传输的同时降低了实现的复杂度。这种编码方案可灵活应用于不同的校验矩阵H,码长和码率的系统中。
- Abstract:
- According to Richardson and Urbanke (RU) the proposed encoding scheme for the large computing and the high complexity of the direct encoding large amount of the low-density parity-check codes(LDPC codes), this paper presents a flexible LDPC encoding scheme suitable for FPGA by using effective check matrix to reduce the complexity of the encoding. It gave the design and implementation principles of encoder and structure and basic components. The effective encoding process based on FPGA with VHDL language is implemented on QuartusⅡ7.2 software platform, the results show that:this scheme decreases the implementation complexity while maintaining efficient and reliable transmission. The encoder suits different parity check H matrix, rates and block length
声明:本文内容及配图由入驻作者撰写或者入驻合作网站授权转载。文章观点仅代表作者本人,不代表电子发烧友网立场。文章及其配图仅供工程师学习之用,如有内容侵权或者其他违规问题,请联系本站处理。 举报投诉