无线传感器网络中信道仿真模型的研究

Channel Simulation Model for Wireless Sensor Networks

无线传感器网络是一种全新的技术,能够广泛应用于恶劣环境和军事领域中。针对无线传感器网络的仿真也随之而来,大部分仿真重点在路由层和MAC层,研究传感器网络的连通性和网络生存周期,而忽略了物理信道的特征。该文主要针对无线传感器网络的特殊性分析和介绍了基于OPNET的无线信道模型,给出了必要的数学计算。通过基于信道接入的分簇算法的网络仿真,验证了无线链路的关键参数对于无线传感器网络的网络结构的影响,给出了系统的仿真结果。

Wireless sensor networks （WSN） are novel technologies, and can be applied to both abominable and military environments. Many simulations about WSN come up, and they pay more attention to route layer and MAC layer to improve the connectvity and life time of networks and the physical attribute about networks is neglected. So this paper puts emphases on wireless channel model of WSN based on OPNET, and some mathematic computations are given. Networks simulation about Channel Access -Based Cluster （CABC） arithmetic will be used to validate the effect of the key parameters on wireless link. Finally, the simulation results are given.