具有不等差错保护性能的新型喷泉码方案

Novel implementation of fountain codes with unequal error protection property

为适应无线环境下传输立体视频业务的需要,保证立体视频数据传输的可靠性,能为用户提供高质量的立体视觉感受,文中针对删除信道和立体视频数据特点,提出了一种新型的基于喷泉码的不等差错保护方法—复制喷泉码。该方法对不同数据进行非均等虚拟复制,改变重要数据的选择概率,进而提高其译码成功率。实验结果表明,提出的方案能够提供优越的不等差错保护性能。

In order to adapt to the needs of 3D video business transmission over wireless environment, ensure the reliability of the 3D video data transmission and be able to provide users with high quality of visual experience, this paper puts forward a new kind of unequal error protection method based on fountain codes： duplication fountain codes, according to the erasure channel and 3D video data characteristic. This method can change the selection probability of the most important data by virtually duplicating different data non-uniformly so that they can obtain a higher rate to be decoded successfully. The experimental results show that the proposed scheme can provide superior unequal error protection performance.