摘要
无线局域网的发展和视频编解码技术的进步,让两者结合越来越紧密。但视频传输需要大量带宽确保,对时延有严格要求,让无线局域网的视频性能成为目前的一个研究重点。对网络视频性能的多种影响因素进行分析,结合无线局域网和主流视频编解码的特点,提出改进的802.11g无线局域网视频性能评价模型和基于视频业务的自适应的前向纠错算法,得到了H.264编解码条件下的视频性能结果,对前向纠错算法对视频性能的影响进行分析。
As wireless network technology and video coding make progress, they are well-knit gradually. But video applications are all real-time and demand more bandwidth, so there are many network researches in the study of video quality in WLANs. Aspects of video quality are analyzed, characteristics of WLANs and mainstream video codecs are considered, an improved evaluation model for video quality of 802.1 1g WLANs and a video based adaptive is presented. Forward error correction algorithm are introduced. Video performance with H. 264 codec is obtained. The influence of forward error correction technique is analyzed.
出处
《计算机工程与设计》
CSCD
北大核心
2008年第19期4975-4978,共4页
Computer Engineering and Design
基金
广东省自然科学基金项目(05006593)
