摘要
在应用多入多出(MIMO)技术的无线Ad-hoc网络中,基于交叉层优化,设计了介质访问控制(MAC)层的优化调度算法。通过网络层、MAC层及物理层交换关键参数信息,在各无线节点分布式地进行优化调度,以选择发送节点以及在这些节点上进行流分配,选择用于发送数据的天线阵列子集,从而提高整体网络的性能。仿真结果显示,与简单单链路算法相比,交叉层设计优化算法可以显著提高MIMOAd-hoc网络的整体容量。
In Multiple-Input-Multiple-Output（MIMO） Ad-hoc network, media access control is a big challenge. In this paper, a Media Access Control（MAC） optimized scheduling algorithm is proposed based on cross-layer design. By transferring key information between network layer, media access control layer and physical layer, the procedure of determining the sending nodes and stream allocation in these nodes is optimized to improve the performance of the whole network. Our simulation results show that this algorithm can enhance the capacity of MIMO Ad-hoc network compared with the Simple Single-Link Algorithm.
出处
《信息与电子工程》
2008年第6期415-419,共5页
information and electronic engineering
关键词
交叉层设计
多入多出
优化调度
流分配
cross-layer design
Multi-In-Multi-Out
optimized scheduling
stream allocation
