关键词: 混合自动重传, 数据分割, 不均等错误保护, 均等错误保护

Abstract:

In order to improve the robustness of H.264 coded video over wireless channels, a new scheme using hybrid automatic repeat request (HARQ) technique for video transmission was proposed. To achieve the unequal error protection, the scheme adopted different HARQ schemes to different priority-data, that is based on data partition mode of H.264. The simulation results show that remarkable improvement in quality of the reconstructed video is obtained by using HARQ technique, especially in the low SNR regions. Moreover, the proposed scheme is with much more error robust compared with the equal error protection scheme under the same bandwidth.

Key words: hybrid automatic repeat request, data partition, unequal error protection, equal error protection