A Cross-Layer Design Approach using MIMO System for Wireless Networks

Abstract

Transmission of video summary frames through wireless networks needs higher bandwidth with less delay and distortion constraints as continuous media playback is necessary at the receiver. So the joint optimization of application layer with lower layers is necessary to meet certain QoS requirements. In this paper, we propose a Cross-layer design approach that jointly optimizes the physical layer, data link layer and application layer for the transmission of video summary frames through wireless networks based on MIMO transmit/receive diversity with AMC at the physical layer and ARQ at the data link layer and source coding at the application layer. We model the finite-state Markov chain(FSMC) for the physical layer service and based on that, we then characterize the Lagrangian relaxation and Dynamic programming to find the optimal shortest path. The source coding as well as retransmission requests are based on the channel-state information (CSI) and the system controller is implemented in all the three physical, data-link and application layers. The numerical results revealed that our proposed cross-layer model with MIMO diversity schemes can efficiently achieve the distortion gain with same delay budget.