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April 23, 2008

Mtg: Content-Adaptive Efficient Resource Allocation for Packet-Based Video Transmission

by @ 3:07 pm. Filed under ALL, Communications, Electronics Design, Engineering Mgmt, Semiconductors


SCV Signal Processing Chapter
Speaker: Aggelos K. Katsaggelos, Dept. of Electrical and Computer Engineering, Northwestern University, and Signal Processing Society Distinguished Lecturer
Time: Fast food and drinks at 6:30 PM; Presentation at 7:00 PM
Cost: $2 donation for refreshments
Place: National Semiconductor, north end of Building E, 2900 Semiconductor Dr., Santa Clara
RSVP: not required


Supporting video communication over lossy channels such as wireless networks and the Internet is a challenging task due to the stringent quality of service (QoS) required by video applications and the many channel impairments.? Two important QoS characteristics for video are the degree of signal distortion and the transmission delay. ? Another important consideration is the cost associated with transmission รข?? for example, the energy consumption in the wireless channel case and the cost for differentiated services in the Internet (with DiffServ) case.

In this presentation we consider the joint adaptation of the source coding parameters, such as the quantization step-size and prediction mode, along with the physical layer resources, such as the transmission rate and power. ? Our goal is to provide acceptable QoS while taking into account system constraints such as the energy utilization. ? We discuss a general framework that allows a number of “resource/distortion” optimal formulations for balancing the requirements of different applications. We conclude the presentation with some of the grand opportunities and challenges in designing and developing video communication systems.


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