电子学报 ›› 2016, Vol. 44 ›› Issue (8): 1831-1836.DOI: 10.3969/j.issn.0372-2112.2016.08.009

• 学术论文 • 上一篇    下一篇

一种适用于大气弱湍流信道的极化纠错编码调制方案

邵军虎, 柯熙政, 陈强   

  1. 西安理工大学自动化与信息工程学院, 陕西西安 710048
  • 收稿日期:2014-11-20 修回日期:2016-03-23 出版日期:2016-08-25 发布日期:2016-08-25
  • 作者简介:邵军虎 男,1980年生于山西永济.西安理工大学自动化与信息工程学院博士,研究方向为信道编码技术.E-mail:jhshao@xaut.edu.cn;柯熙政 男,1962年生于陕西临潼.西安理工大学自动化与信息工程学院教授,博士生导师,研究方向为无线光通信技术.
  • 基金资助:
    国家自然科学基金(No.61377080,No.61405157)

A Suitable Polar Coding Modulation Scheme for Atmospheric Weak Turbulence Channel

SHAO Jun-hu, KE Xi-zheng, CHEN Qiang   

  1. Faculty of Automation and Information Engineering, Xi'an University of Technology, Xi'an, Shaanxi 710048, China
  • Received:2014-11-20 Revised:2016-03-23 Online:2016-08-25 Published:2016-08-25

摘要: 针对服从对数正态分布的大气弱湍流信道模型,基于高斯近似的方法计算分析信道的极化现象,提出了一种适用于大气弱湍流信道的极化编码调制方案,并对其性能进行了仿真分析.不同湍流强度下采用串行抵消译码算法时的仿真结果表明,相比于递归构造方案,文中所提方案在达到1e-5误码率时可获得大约1.0dB到1.4dB的编码增益提升.对极化码分别采用开关键控(OOK)调制与脉冲位置调制(PPM)时的仿真结果表明,采用2-PPM的极化编码调制方案可有效提升无线光通信链路在弱湍流条件下的译码纠错性能.

关键词: 信道编码, 极化码, 极化现象, 大气湍流信道

Abstract: For atmospheric weak turbulence channel model with lognormal distribution,a class of suitable polar codes was constructed based on Gaussian Approximation method.Then their error correction performance were simulated and analyzed over the channel with different turbulence strengths.Simulation results show that the constructed polar codes can get 1.0dB to 1.4dB coding gains at 1e-5 bit error rate,rather than the heuristic recursive structural polar codes under the same successive cancellation decoding algorithm.Furthermore,the performance of polar coded On-Off Keying (OOK) modulation and Pulse Position modulation (PPM) schemes was compared.The results show that polar coded 2-PPM modulation scheme can obtain better performance under weak turbulence channel conditions.

Key words: channel coding, polar code, polarization phenomenon, atmospheric turbulence channel

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