Wireless Video Transmission Based On H.264 And Quality Analysis

Recently, as the development of mobile communication technology become more and more active, especially the development of the Third Generation Communication Systems, Wireless Local Area Network, Wireless Metropolitan Area Network, the goal which people can communication with anyone at anytime at anywhere can be realized. With the process of broadband wireless mobile communication technology and the popularity of Internet, the traffic mainly consisting of voice (or small data) will be replaced by the multi-media traffic mainly consisting of video in the next few years. As a result, the study on transmission quality of video image is the previous condition to realize the QoS adjustment and Resource Schedule of the network.Effective video compression technology is the premise and guarantee of wireless video communication. This thesis discusses the problems of coding and transmission of H.264/AVC under wireless environment. Combining with wireless video application environments, this thesis mainly analyzes the H.264/AVC coding and robustness, and then illustrates the friendly interface and scalability provided by the H.264/AVC, finally analyzes the error control methods used in H.264/AVC based on the current various kinds of error correcting technology. Focusing on the four typical kinds of wireless video application environments, this research proposes the simulation methods, which lays a firm foundation on the further research.The research introduces subjective measurement and objective measurement. After analyzing and comparing PSNR and SSIM algorithms, we put forward EPSNR algorithm and use these algorithms measuring the materials under wireless channel transmission. The paper compares three objective algorithms' results with subjective measurement result. The result shows that EPSNR algorithm was the closest to the subjective measurement result.