| 基于单反馈的UEP-LT编码方案 |
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| 引用本文： | 陈美玲,张卫党,李方圆.基于单反馈的UEP-LT编码方案[J].科学技术与工程,2015,15(4). |
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| 作者姓名： | 陈美玲 张卫党 李方圆 |
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| 作者单位： | 郑州大学信息工程学院,郑州,450001 |
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| 基金项目： | 国家自然科学基金(U1204607) |
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| 摘 要： | 为了在保持高优先级数据包优异性能的同时花费较小的代价来恢复低优先级数据包,提出了一种基于单反馈的UEP-LT编码方案。当高优先级数据包完全恢复后引入反馈,编码器根据反馈信息同时调整参与编码的源数据包和编码方案。通过仿真给出了参与编码的源数据包的最佳选取方式,并对此方案的性能进行了仿真分析。结果表明,该方案明显提高了低优先级数据包的译码性能。
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| 关 键 词： | 不等差错保护 反馈 UEP-LT |
| 收稿时间： | 2014/8/14 0:00:00 |
| 修稿时间： | 2014/9/10 0:00:00 |
UEP-LT Coding Scheme Based on a Single Feedback |
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| CHEN Mei-ling,ZHANG Wei-dang and LI Fang-yuan.UEP-LT Coding Scheme Based on a Single Feedback[J].Science Technology and Engineering,2015,15(4). |
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| Authors: | CHEN Mei-ling ZHANG Wei-dang and LI Fang-yuan |
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| Institution: | School of Information Engineering,Zhengzhou University,School of Information Engineering,Zhengzhou University |
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| Abstract: | In order to spend fewer prices to recover lower prioritized packets, while keeping excellent performance of prioritized packets, this paper proposes a UEP-LT coding scheme based on a single feedback message. When prioritized packets have recovered completely, we introduce a feedback. The encoder will adjust source packets in encoding and coding scheme based on the feedback. We obtain the appropriate selection method of source packets in encoding by simulation. Our analysis shows that this scheme has a dramatic improvement on the decoding performance of the lower prioritized packets. |
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| Keywords: | unequal error protection feedback UEP-LT |
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