无线网络中基于PSNR的视频数据流传输仿真分析

Simulation study of transmission of vedio data streams through wireless area network based on PSNR

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.