Based on the Radio Propagation Model and Finite State Machine, this article proposes the route to establish the simulation model of physical layer protocol of WLAN,and the approach to implement the IEEE 802.11b protocol in a specific network simulator.

• 基于无线信号传播模型和有限状态自动机理论；提出了无线局域网物理层协议仿真模型的设计思路和在具体的网络仿真器中实现IEEE 802.；11b协议的方法。