Cross layer implementation with multiple descriptive coding to support video streaming in IEEE 802.11e networks

The emergence of different wireless LAN technologies has called for the implementation of various services such as multimedia streaming over these networks. The use of Wireless LANs has changed from simple data transfer to transmission of delay sensitive and bandwidth intense applications like multimedia streaming. The provision of Quality of Service for multiple simultaneous users is a challenge. Multiple Descriptive Coding (MDC) allows to efficiently stream video over variable bit rate channel. In this paper, we use cross layer design with MDC to provide a solution to this challenge. By formulating the network functions such as encoder behavior and MAC scheduling in cross layers can be jointly optimized to provide the best video quality. Our Simulation results shows a improved PSNR, while maintaining upper bound on QoS parameter delay and jitter.