基于混沌预测的宽带DVB-RCS卫星接入信道动态分配方案研究

李斗; 姬冰辉; 王峰; 项海格

doi:10.3724/SP.J.1146.2006.01286

基于混沌预测的宽带DVB-RCS卫星接入信道动态分配方案研究

doi: 10.3724/SP.J.1146.2006.01286

基金项目:

国家863计划(2006AA01Z278)资助项目

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出版历程
- 收稿日期: 2006-08-31
- 修回日期: 2007-05-23
- 刊出日期: 2008-03-19

The Dynamic Allocation of Broadband DVB-RCS Satellite Access Channel Based on Chaotic Prediction

摘要

摘要: 该文概述了基于卫星数字视频广播-反向信道系统(DVB-RCS)标准的宽带卫星通信网的特点，并重点研究了多址接入信道的动态分配策略，在利用混沌理论对网络中的自相似业务流量进行预测的基础上，提出了一种新型混合按需分配多址接入方案。该文还利用OPNET软件建立了仿真系统，用于比较不同方案的性能。仿真结果表明，在高信道负载以及网络中业务流具有较高自相似程度的条件下，该文所提出方案具有更优越的性能。
- 宽带卫星通信; 数字视频广播-反向信道系统; 按需分配多址接入; 混沌预测; 自相似业务
Abstract: This paper provides an overview of broadband satellite communication networks based on Digital Video Broadcasting-Return Channel System (DVB-RCS) standard, with an emphasis on the dynamic allocation of multi-access channel. A novel combined Demand Assignment Multiple Access (DAMA) scheme is proposed, in which chaotic prediction method is employed for self-similar traffic. For comparing the performance of different schemes, OPNET software is used to build a simulation system. Simulation results indicate that the novel scheme has better performance under heavy channel load and when the traffic has high degree of self-similarity.

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