摘要： 提出一种非规则低密度奇偶校验码（LDPC）的联合构码、编解码方案。在一定的约束条件下，构造了基于准循环码和重复累加码的非规则LDPC码集。提出该码集的通用编码器和解码器构架。实验结果表明，这种非规则码集在高码率情况下，性能优于DVB-S2，具有优秀的纠错性能，还可以映射到精简的编码器和高速的解码器。

关键词: 非规则LDPC码, 解码, 编码, 度分布

Abstract: This paper presents a joint irregular low-density parity-check (LDPC) code-encoder-decoder design approach. The LDPC codes are constructed based on quasi-cyclic code and repeat accumulate code subject to certain constraints. Encoder-decoder architecture of this code is proposed. Simulation results show that the irregular LDPC codes that not only have good error-correcting capability but also exactly fit to low-complexity encoder and high-speed decoder implementations. The code’s performance outperforms DVB-S2 at high code rate.

Key words: Irregular LDPC code, Decoding, Encoding, Degree distribution

中图分类号: 

• TP302