期刊名称：International Journal of Wireless & Mobile Networks
印刷版ISSN：0975-4679
电子版ISSN：0975-3834
出版年度：2010
卷号：2
期号：2
出版社：Academy & Industry Research Collaboration Center (AIRCC)
摘要：Received video quality enhancement gained with the implementation of NEWPRED and UEP mechanism is discussed in this paper. Selection of these two methods is justified with details of their implementation. Several MPEG-4 video test bit-streams are transmitted over simulated UMTS environment. Performance enhancement over various channel propagation conditions as standardized by 3GPP for conformance testing in is quantified. Objective video quality assessment is done using standard PSNR metric while near subjective assessment is obtained using Video Quality Metric (VQM) utility. It is observed that in all propagation conditions simulated, implementation of proposed error concealment and mitigation techniques provide considerable improvements in both subjective and objective video quality.
