视频抗误码技术在无线网络中的应用研究  

Application research on video error resilience technology in wireless network

作　　者：高峰 

机构地区：[1]河南省电力通信自动化公司,河南郑州450052

出　　处：《电力系统通信》2007年第2期27-29,44,共4页Telecommunications for Electric Power System

摘　　要：随着第3代移动通信的发展,基于无线的视频抗误码技术成为多媒体通信领域研究的热点之一。以H.263视频编码标准为基础,根据实时视频传输的特点,提出2种可用于无线的视频抗误码技术,即基于反馈的帧内刷新和插入重同步标识。经CDMA2000 1x网络的测试,这2种方法在少量增加编码比特率的情况下,能较大程度地改善因传输误码而引起的视频质量恶化情况,适合于实时的无线视频传输系统。With the development of 3 G, error resilience technology over wireless channel is generally accepted as one of the hottest research fields of multimedia communication. Based on H. 263 video coding standard and real-time video transmission, this paper proposes two methods of video error resilience which are available for wireless channel, i.e. feedback based intra refresh and insert re-sync mark. According to the test of CDMA2000 1x network, the two methods can greatly improve the video quality, with a cost of a few bit rates increase. They are suitable for real-time video transmission system.

关 键 词：H.263 视频传输 抗误码技术 CDMA2000 1x 

分 类 号：TN919.8[电子电信—通信与信息系统]