Congestion and Error Control for Layered Scalable Video Multicast over WiMAX

chip123

Mar. 23, 2007, ITRI Bldg.9, 010 Conference Room(工研院9館010會議室)
Abstract:

Thanks to the perfect synergy between WLAN and the WiMAX, the emerging IEEE 802.16 WiMax standard for longer-range outdoor links can support a new scalable wireless multimedia system. On the other hand, the quality of service (QoS) of wireless multimedia can be seriously degraded due to the more dynamically changing end-to-end available bandwidth caused by the wireless fading/shadowing and link adaptation. Moreover, the increased occurrence of wireless radio transmission errors also results in higher bursty rate of packet loss when compared with wired IP networks. An end-system driven solution featuring embedded probing for layered multicast of scalable video is presented in this talk. By taking advantage of QoS features offered by one of the four proposed WiMAX service flow arrangement, this system aims at more flexible layer constructing and subscription while reliable in diverse channel conditions and fitting users’ demand. The system optimality comes from the best tradeoff of number of video layers subscription with number of additional FEC packets insertion to simultaneously satisfy the estimated available bandwidth and the estimated wireless channel error condition.

舉辦時間 : 96年3月23日(星期五) 09:30- 11:30
舉辦地點 : 工業技術研究院 中興院區 9 館010會議室
主辦單位 : 台灣SoC推動聯盟 / 工研院系統晶片科技中心
議程主席：工研院系統晶片科技中心副主任暨經濟部工業局半導體推動辦公室主任 張志偉博士

Speaker's Bio:

Jenq-Neng Hwang
Department of Engineering , University of Washington,

Dr. Jenq-Neng Hwang received the BS and MS degrees, both in electrical engineering from the National Taiwan University, Taipei, Taiwan, in 1981 and 1983 separately. After two years of obligatory military services, he enrolled as a research assistant in 1985 at the Signal and Image Processing Institute, Dept. of Electrical Engineering, University of Southern California, where he received his Ph.D. degree in December 1988. He was also a visiting student at Princeton University, New Jersey, from 1987 to 1989.

In the summer of 1989, Dr. Hwang joined the Department of Electrical Engineering of the University of Washington in Seattle, where he has been promoted to Full Professor since 1999. He also served as the Associate Chair for Research & Development in the EE Department from 2003 to 2005. He has published more than 200 journal, conference papers and book chapters in the areas of image/video signal processing, computational neural networks, multimedia system integration and networking. Dr. Hwang received the 1995 IEEE Signal Processing Society's Annual Best Paper Award (with Shyh-Rong Lay and Alan Lippman) in the area of Neural Networks for Signal Processing.

Dr. Hwang served as the Secretary of the Neural Systems and Applications Committee of the IEEE Circuits and Systems Society from 1989 to 1991, and was a member of Design and Implementation of Signal Processing Systems Technical Committee in IEEE Signal Processing Society. He is also a founding member of Multimedia Signal Processing Technical Committee of IEEE Signal Processing Society. He served as the Chairman of the Neural Networks Signal Processing Technical Committee in IEEE Signal Processing Society from 1996 to 1998, and was the Society's representative to IEEE Neural Network Council from 1996 to 2000. He served as an associate editor for IEEE Transactions on Signal Processing from 1992 to 1994 and an Associate Editors for IEEE Transactions on Neural Networks from 1992 to 2000. He is now an Associate Editor for IEEE Transactions on Circuits and Systems for Video Technology, and an Editor for Journal of Information Science and Engineering. He is also on the editorial board of Journal of VLSI Signal Processing Systems for Signal, Image, and Video Technology. Dr. Hwang was the conference Program Chair of 1994 IEEE Workshop on Neural Networks for Signal Processing held in Ermioni, Greece, September 1994. He was the General Co-Chair of the International Symposium on Artificial Neural Networks held in Hsinchu, Taiwan, R.O.C., December 1995. He also chaired the tutorial committee for IEEE International Conference on Neural Networks (ICNN'96) held in Washington DC, June 1996. He is the Program Co-Chair of International Conference on Acoustics, Speech, and Signal Processing (ICASSP), Seattle 1998. Dr. Hwang is a fellow of IEEE since 2001.

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