OPNET无线信道建模

OPNET Radio Model

无线网络的研究越来越引起人们的关注,如何有效逼真地对无线信道进行建模是个富有挑战性的课题。该文基于目前功能最强大网络仿真工具OPNET软件的研究,在国内基本上首次详细介绍OPNET无线信道建模整个过程。该文对于从事无线信道研究工作的OPNET非使用者也有一定的启发意义。

Unlike wired networks where packet losses are mainly caused by congestion,there are two major challenges over wireless network:1)fluctuations in channel quality and2)high bit -error rates caused by fading or multi -path effect.With wireless networks gaining prominence and acceptance,especially the LANs based on the IEEE802.11standards,it is foreseeable that wireless radio modeling will be a critical part of the wireless research.Based on the research of powerful network simulator-OPNET,this paper presents the whole process of radio modeling.