电信科学 ›› 2019, Vol. 35 ›› Issue (3): 91-98.doi: 10.11959/j.issn.1000-0801.2019007

• 研究与开发 • 上一篇    下一篇

改进的分段CRC辅助的删余Polar译码

倪妍红,楼向雄,包建荣()   

  1. 杭州电子科技大学,浙江 杭州 310018
  • 修回日期:2018-12-12 出版日期:2019-03-01 发布日期:2019-03-23
  • 作者简介:倪妍红(1993- ),女,杭州电子科技大学硕士生,主要研究方向为通信信号处理、固态存储和数据安全。|楼向雄(1972- ),男,杭州电子科技大学副教授,主要研究方向为固态存储和数据安全等。|包建荣(1978- ),男,杭州电子科技大学教授,主要研究方向为空间无线通信、通信信号处理与自主无线电等。
  • 基金资助:
    国家自然科学基金资助项目(U1709220);国家自然科学基金资助项目(61702149);国家自然科学基金资助项目(61471152);浙江省科技计划基金资助项目(LGG18F010011);浙江省自然科学基金资助项目(LY17F010019);浙江省固态硬盘和数据安全技术重点实验室开放课题(ZJSSKL001);杭州电子科技大学2017年高等教育研究资助项目(XNFZ201702)

Improved segmented CRC assisted puncturing Polar decoding

Yanhong NI,Xiangxiong LOU,Jianrong BAO()   

  1. Hangzhou Dianzi University,Hangzhou 310018,China
  • Revised:2018-12-12 Online:2019-03-01 Published:2019-03-23
  • Supported by:
    The National Natural Science Foundation of China(U1709220);The National Natural Science Foundation of China(61702149);The National Natural Science Foundation of China(61471152);Zhejiang Provincial Science and Technology Plan Project(LGG18F010011);Zhejiang Provincial Natural Science Foundation of China(LY17F010019);The Open Research Fund of Zhejiang Provincial Key Laboratory of Solid Hard Disk and Data Security Technology,HDU(ZJSSKL001);2017 Higher Education Research Project of Hangzhou Dianzi University(XNFZ201702)

摘要:

提出了一种分段循环冗余校验(CRC)辅助的删余译码算法。该方法利用BP译码的大并行度和CRC校验的高可靠性,将CRC校验比特均匀或按比例分散插入原信息比特中。仿真表明:当码长N为1 024、信噪比为3.5 dB时,分段CRC(2,16×2)和CRC(2,24+8)相比基于G矩阵检测译码平均迭代次数分别少2.7次和2.8次;当码长M为896时,误码率为10-5的两种分段CRC相比无CRC辅助BP删余译码,均获得约0.7 dB增益。

关键词: 删余Polar码, 置信传播译码, 循环冗余校验, 分段译码

Abstract:

A segmented cyclic redundancy check (CRC) assisted decoding algorithm was proposed.This method makes use of the high parallelism of BP decoding and the high reliability of CRC verification,and uniformly or proportionally disperses CRC verification bits into the original information bits.Simulation results show that when the code length N is 1 024 and the SNR is 3.5 dB,the average iterations of segmented CRC(2,16×2)and CRC (2,24+8) are 2.7 and 2.8 times less than those of G matrix based decoding.When the code length M is 896,the two segmented methods with a bit error rate of 10-5obtained about 0.7 dB gain compared with the non-CRC assisted BP puncturing decoding.

Key words: puncturing Polar code, belief-propagation decoding, CRC, segmented decoding

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