| 基于H.264的数据分割和不等差错保护方案 |
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| 引用本文： | 尹明,王宏远.基于H.264的数据分割和不等差错保护方案[J].华中科技大学学报(自然科学版),2006,34(6):7-10. |
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| 作者姓名： | 尹明 王宏远 |
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| 作者单位： | 华中科技大学,电子与信息工程系,湖北,武汉,430074 |
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| 摘 要： | 为改善H．264码流在无线信道中传输的误码鲁棒性，提出一种新的数据分割抗误码方案．该方案利用无线信道反馈信息，预测信道丢包率，并判决对视频编码层（VCL）的数据是否进行数据分割．在高误码环境下，采用码率自适应删余卷积码（rate-compatible punctured convolution code）对分割后的数据区进行不等差错保护．仿真表明，算法具有较好的抗误码鲁棒性，有效地降低编码冗余，提高了编码效率．
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| 关 键 词： | 数据分割 码率自适应删余卷积码 网络抽象层 Gilbert信道 |
| 文章编号： | 1671-4512（2006）06-0007-04 |
| 收稿时间： | 04 18 2005 12:00AM |
| 修稿时间： | 2005-04-18 |
A scheme for H. 264-based data partition and unequal error protection |
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| Yin Ming,Wang Hongyuan.A scheme for H. 264-based data partition and unequal error protection[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,2006,34(6):7-10. |
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| Authors: | Yin Ming Wang Hongyuan |
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| Abstract: | To improve the robustness of H.264 coded video over wireless channel, a novel scheme for data partition and unequal error protection was proposed. The scheme predicated the packet loss ratio and judged whether data of VCL was divided or not by the feedback of the wireless channel. Under the circumstance of high bit error, the partitioned data was protected unequally by rate-compatible punctured convolutional codes (RCPC). Simulation results showed that the algorithm was possessed of good protect error robustness and high coding efficiency. |
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| Keywords: | data partition rate-compatible punctured convolution code(RCPC) network layer Gilbert channel |
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