摘要
在IEEE802.16e通信标准的LDPC码背景下,基于LDPC码的软判决LLR BP译码算法,结合LDPC码的最小和处理方式和硬判决译码思想,针对译码性能和复杂程度提出了一种改进的BP译码算法。在相同信噪比条件下,新BP算法在译码性能上非常接近LLR BP算法,同时其复杂程度却远小于LLR BP算法,提高了工程可实现性。
This paper is according to the IEEE802.16e communication standard of LDPC codes, based on soft decision decoding algorithm of LDPC codes as LLP, BP. Aslo combined with the minimum of LDPC codes and hard decision decoding,an improved BP decoding algorithm is proposed. Under the same condition of SNR, the new BP algorithm＇s decoding performance is very close to the LLR. BP algorithm＇s, and its complexity is lower. And the new BP algorithm improves the realizabilitv of project.
出处
《电脑与信息技术》
2013年第4期25-28,共4页
Computer and Information Technology
