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应用科学学报 ›› 2006, Vol. 24 ›› Issue (4): 336-340.

• 论文 • 上一篇    下一篇

非高斯噪声中Turbo码的性能改进研究

蒋宇中, 胡修林, 张曙霞   

  1. 华中科技大学电子与信息工程系, 湖北武汉 430074
  • 收稿日期:2005-03-21 修回日期:2005-06-06 出版日期:2006-07-31 发布日期:2006-07-31
  • 作者简介:蒋宇中,副教授,硕士生,研究方向:通信工程,E-mail:jyzhz@sina.com;胡修林,教授,博导,研究方向:通信与电子系统.
  • 基金资助:
    国防科工委资助项目

Performance Improvement of Turbo Code in Non-Gaussian Noise

JIANG Yu-zhong, HU Xiu-lin, ZHANG Shu-xia   

  1. Department of Electronics and Information Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
  • Received:2005-03-21 Revised:2005-06-06 Online:2006-07-31 Published:2006-07-31

PDF

87

被引次数

10

摘要： 对Turbo码在非高斯脉冲型噪声下性能的损失进行了研究,提出了一种新的基于幅度统计特性服从ClassA噪声模型的修正译码算法.该算法修正传统MAP算法的外部信息和信道信息计算公式,使之适应非高斯的ClassA脉冲噪声环境,从而改进了译码性能,计算机仿真证明新的译码算法在Class A噪声环境中比传统MAP算法具有更好的性能.

关键词: MAP算法, 非高斯噪声模型, Turbo码, 脉冲噪声

Abstract: This paper investigates the loss of Turbo decoding performance in non-Gaussian impulsive noise with computer simulation, and proposes a new decoding algorithm for Turbo code by using Middleton's Class A impulsive noise model based on the statistical nature of the amplitude.The algorithm improves performance by modified extrinsic and channel information of traditional MAP to suit additive white Class A noise.Simulation results show that the proposed algorithm has better performance than traditional MAP algorithm in Class A noise.

Key words: MAP Algorithm, Turbo decoding, class A noise model, impulsive noise

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