Cross-layer Scheduling and Dynamic Resource Allocation for Downlink Multiuser MIMO Systems with Limited Feedback

摘要：

In this paper, we present a cross-layer scheduling and dynamic resource allocation (CLSDRA) strategy for downlink multiuser multiple-input multipleoutput(MIMO) systems with limited feedback. Based on the instantaneous partial channel state information (CSI) from physical (PHY) layer and the queue state information (QSI) from media access control (MAC) layer, the proposed scheme schedules packets and allocates resources such as channel, bit and power to the scheduled users to maximize the utility function which sums the product of each scheduled users delay requirement, head of line (HOL) packet waiting time, queue length and data rate. Simulation results demonstrate that our scheme outperforms the existing single-layer resource allocation or scheduling algorithms in balancing the total system throughput and the packet drop rate because the proposed strategy could utilize the QSI and the partial CSI simultaneously.

关键词： cross-layer scheduling dynamic resource allocation downlink multiuser MIMO systems limited feedback

作者: Chong-xian Zhong Lu-xi Yang

作者单位: School of Information Science & Engineering, Southeast University, Nanjing, China

会议类型: 国际会议

会议名称: 首届无线通信跨层设计国际学术研讨会(1st International Workshop on Cross Layer Design)

会议地点: 济南

会议语种:英文

页码: 1-4

在线出版日期: 2007-09-20（万方平台首次上网日期，不代表论文的发表时间）