Title :
Comparison of rate allocation strategies for H.264 video transmission over wireless lossy correlated networks
Author :
Gnavi, Stefano ; Grangetto, Marco ; Magli, Enrico ; Olmo, Gabriella
Author_Institution :
Dipt. di Elettronica, Politecnico di Torino, Italy
Abstract :
In this paper we study the problem of transmitting coded video over a UMTS network. We first discuss the statistical characteristics of packet losses in case of RTP/UDP/IP wireless video communication. Then, we propose a new rate allocation algorithm for H.264 video, based on a Gilbert-Elliot model of the packet losses. We compare the proposed algorithm with several other allocation strategies, showing that it achieves satisfactory performance in terms of PSNR. Moreover, we outline the limits of the employed distortion model and outline possible solutions to overcome them.
Keywords :
3G mobile communication; correlation methods; radio networks; statistics; video coding; visual communication; Gilbert-Elliot model; H.264 video transmission; UMTS network; distortion model; rate allocation algorithm; statistical characteristics; universal mobile telecommunication system; video coding; wireless lossy correlated networks; wireless video communication; 3G mobile communication; Decoding; Lagrangian functions; MPEG 4 Standard; Multimedia communication; PSNR; Propagation losses; Radio communication; Recursive estimation; Video coding;
Conference_Titel :
Multimedia and Expo, 2003. ICME '03. Proceedings. 2003 International Conference on
Print_ISBN :
0-7803-7965-9
DOI :
10.1109/ICME.2003.1221667
