A cross-layer resource allocation and scheduling for multiuser space-time block coded MIMO/OFDM systems

In this paper, we propose a cross-layer adaptive resource allocation and scheduling approach for multiuser MIMO/OFDM systems. Specifically, a space-time block coded multi-antenna combined with OFDM system is considered where the channel state information (CSI) is not perfectly known. A distinctive feature of the cross-layer optimization methodology is the joint design of the subcarrier, bit, and power allocation in the physical layer along with the scheduling in the data link layer. Simulation results demonstrate that the proposed cross-layer optimization and design approach achieves significant gains in throughput, average packet delay, and system stability compared to a conventional MIMO/OFDM system where the resource allocation and scheduling are performed without taken into consideration the cross-layer interactions between the different protocol layers.