摘要
针对无线网络环境低带宽、高错误率和高时延的特点,在NS2中建立仿真模型,利用基于PSNR的客观质量评估方法,分别对不同的数据包错误率、压缩量化参数、GOP的长度、数据包的长度对于图像质量的影响进行仿真分析.仿真结果给出的结论为无线网络更加有效地进行视频数据流传输提供了有益的参考.
In view of the low bandwidth,the high error rate and the high delay of wireless networks,simulation model in NS2 was established.The simulation analysis of the different packet error rate,the compression quantisation parameter,the length of GOP and packet for image quality based on the PSNR evaluation method respectively were carried out.The result of the simulation analysis provides the beneficial reference for the wireless network more effectively in vedio data transmission.
出处
《郑州轻工业学院学报(自然科学版)》
CAS
2011年第6期12-15,共4页
Journal of Zhengzhou University of Light Industry:Natural Science
基金
河南省自然科学基金项目(0611054800)
河南省科技攻关项目(112102210322)
河南省教育厅自然科学研究计划项目(2009A520032)
关键词
峰值信号与噪声比
无线网络
视频数据流传输
peak signal-to-noise ratio(PSNR)
wireless network
transmission of vedio data stream