基于跨层设计的嵌入式无线视频监控系统实现  

Implementation of Embedded Wireless Video Transmission System Based on Cross-layer Design

作　　者：黄刚[1] 习勇[1] 王丽洁[1] 侯靳勇[1] 

机构地区：[1]国防科技大学电子科学与工程学院,湖南长沙410073

出　　处：《现代电子技术》2010年第4期67-69,共3页Modern Electronics Technique

基　　金：长沙市科技计划项目产学研合作专项(K0802121-11)

摘　　要：设计一种基于i.MX27的ARM9+Linux系统组成的嵌入式无线视频监控系统。该系统采用H.264压缩编码和RTP/RTCP流媒体传输协议,实现了视频数据的压缩发送,同时在该系统上实现基于物理层网卡发送速率和RTP丢包率反馈信息相结合的跨层码率控制策略。测试和应用结果表明,该系统取得了良好的视频效果,具有很好的应用前景。The design of embedded video surveillance system based on ARM9 i. MX27 and Linux is described. This system combines H. 264 standard with RTP/RTCP protocol to implement coding and transmission of video data. At the same time,a cross - layer rate control scheme based on physical transmitting rate of wireless card and the loss rate of RTP feedback packets are proposed and it is realized on the surveillance system. Experimental and application results show that this system works well and has a good foreground.

关 键 词：跨层设计 无线视频传输 码率控制 嵌入式系统 

分 类 号：TP368.1[自动化与计算机技术—计算机系统结构]