摘要
对CDMA2000无线网络中的MPEG-4视频传输进行了跨层性能评估,研究无线信道误码引起丢包的情况下MPEG-4视频编码参数对经信道传输后解码得到的图像质量的影响。以3GPP2的CDMA2000网络仿真器为基础搭建了软件仿真系统,对不同无线信道模型以及不同丢帧率条件下MPEG-4编码参数对视频数据传输的影响进行分析和比较,为跨层优化提供有价值的参考。
This paper presents the cross-layer performance evaluation of MPEG-4 over CDMA2000 wineless network,which focus on influence of MPEG-4 encoding parameters upon quality of decoded video after transmitted through packet-loss channel.The software simulation system is built with the CMDA2000 wireless network simulator of 3GPP2,multiple channel models with different FER are analyzed.The study provides valuable information for cross-layer optimization.
出处
《计算机工程》
CAS
CSCD
北大核心
2008年第12期203-205,226,共4页
Computer Engineering
