摘要
Polar码是第一种理论上被严格证明能达到香农限的信道编码方法。结合Polar码的构造特点,提出了一种基于Polar码的可抗差错的图像传输方法,将传输图像进行离散变换后获取的频率分量与Polar码极化后信道的可靠性一一对应,然后进行编码传输。仿真结果表明,新构造的图像传输系统,能以较少的信息完成图像传输,同时达到较高的传输质量,具有良好的可抗差错性和较高的传输效率。
Polar code is the first code family that has been proven to be capable of achieving the capacity of Binary-input discrete memoryless channels（ B-DMC）. Considering its unique structure characteristics,we propose an image transmission scheme based on Polar codes in this paper.After digital image processing and creation of a one-to-one correspondence between the difference frequency components and the polarized channels,the frequency will be coded by Polar codes and transferred through the channel.The simulation results show that,this new scheme can complete the image transmission with less data,which can improve the transmission efficiency,and effectively protect the image from the noise at the same time.
出处
《无线电工程》
2016年第1期30-33,38,共5页
Radio Engineering
基金
国家自然科学基金资助项目(61271273)
关键词
Polar码
图像传输
图像压缩
纠错编码
Polar codes
image transmission
image compression
error correction code
