Adaptive Error Resilience Tools for Improving the Quality of MPEG-4 Video Streams over Wireless Channels
August 1, 2006·
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0 min read
Ángela Belda
Juan Carlos Guerri
Ana Pajares
Abstract
The transmission of encoded video streams over heterogeneous networks, characterized by congestion losses in wired links and high bit error rate in the wireless channel, is under consideration in this paper. First of all, it is necessary to make a distinction between the different kinds of losses to achieve a high channel utilization. Then, when dealing with wireless losses, the robustness of the encoded stream has to be improved. This article shows an easy way of implementing a global adaptive algorithm for wireless networks. It proposes a new algorithm to adequate the parameters of video error resilience tools to the changing characteristics of the wireless channel. The aim of this algorithm is guaranteeing the quality of the video. Simplicity is the key, as the receiver of the video stream will be a handheld device (i.e. PDA, mobile phone, etc.) with limited processing capacity
Type
Publication
32nd EUROMICRO Conference on Software Engineering and Advanced Applications (EUROMICRO'06), 424–429. IEEE
Authors
Full Professor · Head of the group
Juan Carlos Guerri Cebollada was born in Valencia, Spain in 1969. He received his M.S. and Ph.D. degrees in Telecommunication Engineering from the Universitat Politècnica de València (UPV) in 1993 and 1997, respectively. He is a Full Professor in the Department of Communications Engineering at UPV, where he teaches at the ETSI Telecomunicación. He leads the Multimedia Communications research group (COMM) of the iTEAM (Institute of Telecommunications and Multimedia Applications). His research spans multimedia communications, adaptive video streaming (DASH), quality of experience, wireless and ad hoc networks, and the application of multimedia technologies to industry, medicine, education and communications.