Intelligent Wireless Video Communication: Source Adaptation and Multi-User Collaboration

A key challenge to the vision of ubiquitous mobile multimedia access is the communication resource limitation in multiple access wireless channels. In this paper we review several source adaptation techniques and wireless collaboration schemes. We then formulate the multi-user video communication problem as a network utility maximization (NUM) problem., and solve it using a pricing scheme. The pricing scheme co-ordinates resource allocation, source adaptation in a distributed manner, and leads to efficient packet scheduling to achieve better utilization of communication resources and end-to-end video quality.