Title :
Utility Based Optimal Layering and Adaptive Transmission for Video Multicasting over Wireless Systems
Author :
Qu, Daiming ; Shi, Jing ; Zhu, Guangxi
Author_Institution :
Dept. of Electron. & Inf., Huazhong Univ. of Sci. & Technol., Wuhan
Abstract :
Layered video multicasting can be used to accommodate the heterogeneity of users in wired and wireless system. In a wireless system with adaptive modulation and coding (AMC) scheme, total utility of all users can be increased by transmitting the video layers over different AMC modes and allocating proper bandwidth to these video layers. The utility maximization problem can be formulated into a convex optimization when the utility function is convex. When considering the limit of number of layers, a 2-step convex optimization algorithm is proposed to maximize the total utility by properly selecting the AMC modes to transmit the video layers and allocating bandwidth. A 7-cell cdma2000 HDR system is used in the simulation to show the performance of the proposed methods
Keywords :
3G mobile communication; adaptive codes; adaptive modulation; bandwidth allocation; multicast communication; optimisation; video coding; video communication; AMC; adaptive modulation and coding; adaptive transmission video multicasting; bandwidth allocation; cdma2000 HDR system; convex optimization; utility based optimal layering; utility maximization problem; wireless systems; Adaptive systems; Bandwidth; Channel allocation; Dynamic programming; Internet; Modulation coding; Multicast algorithms; TV broadcasting; Wireless communication; Wireless networks; HDR; Video multicast; adaptive modulation and coding; convex optimization; utility function;
Conference_Titel :
Vehicular Technology Conference, 2006. VTC 2006-Spring. IEEE 63rd
Conference_Location :
Melbourne, Vic.
Print_ISBN :
0-7803-9391-0
Electronic_ISBN :
1550-2252
DOI :
10.1109/VETECS.2006.1682935
