计算机应用与软件Issue(8)：110-113,4.DOI:10.3969/j.issn.1000-386x.2015.08.026
基于压缩感知和非对称 Turbo码的联合信源信道编码
JOINT SOURCE AND CHANNEL CODING BASED ON COMPRESSED SENSING AND ASYMMETRIC TURBO CODES
摘要
Abstract
For the characteristic of channel system in radio environment being harsh and unstable, this paper proposed a jointing source and channel coding scheme which is based on compressed sensing and asymmetric Turbo codes.The scheme combines the compressed sensing technology which has good compression performance with the asymmetric Turbo code which has strong error correction capability, thus realises the joint source and channel coding with adaptive compressed image transmission.According to 2D compression sensing-based channel esti-mation method, this scheme estimates radio channel environment and dynamically adjusts the parameters of compressed sensing and the enco-ding strategies of asymmetric Turbo codes to improve image’ s transmission efficiency and the reconstruction quality.Experimental simulation results show that to use different measurement number of compressed sensing and types of asymmetric Turbo code according to different radio channel environment, the transmission efficiency of image can be improved, and the quality restoration and transmission rate of image can achieve the optimal balance.关键词
压缩感知/正交匹配追踪/非对称Turbo码/联合信源信道编码Key words
Compressed sensing/Orthogonal matching tracking/Asymmetric/Turbo codes/Joint source and channel code分类
信息技术与安全科学引用本文复制引用
汪亚芬,汪汉新..基于压缩感知和非对称 Turbo码的联合信源信道编码[J].计算机应用与软件,2015,(8):110-113,4.基金项目
国家自然科学基金项目（61072075）；湖北省自然科学基金项目（2013CFB448）；中央高校基本科研业务费专项资金重点项目（CZZ13001）。 （）
