摘要
该文针对具有网状(Mesh)拓扑结构的宽带卫星通信网,研究了分布式控制多址接入信道分配策略。提出了一种基于自相似业务流量混沌预测的混合动态分配方案。利用OPNET软件建立了仿真系统,研究比较了信道分配周期、信道负载以及业务流自相似程度对几种方案性能的影响。仿真结果表明,对于采用地球同步轨道(GEO)卫星、低轨(LEO)和中轨(MEO)卫星星座的宽带卫星Mesh网,所提出方案在高信道负载条件下都具有明显的优势。
This paper investigates the distributed allocation control of multi-access channel in broadband satellite mesh network. A novel combined Dynamic Allocation Multi-Access （DAMA） scheme is proposed, which is based on the chaotic prediction of self-similar traffic. The OPNET simulation system is built for comparing the performance of several schemes under different channel allocation cycle and channel load. The influence of traffic with different degree of self-similarity is also studied. Simulation results indicate that the novel scheme has better performance under high channel load in broadband satellite Mesh network with GEO, LEO and MEO satellite constellations.
出处
《电子与信息学报》
EI
CSCD
北大核心
2008年第4期763-767,共5页
Journal of Electronics & Information Technology
基金
国家863计划(2006AA012278)资助课题
