基于认知无线电网络的接入策略仿真实现

针对CRN接入策略仿真的应用场景,采用事件调度法对CRN的接入策略进行仿真实现,该仿真方法以事件为基本单元,预定事件发生时间并按时间顺序执行每个事件,真实地模拟CRN接入策略中授权用户和CR用户的行为。该仿真方法同样适用于具有不同优先级的多个用户机会式共享的多信道通信系统接入策略的仿真实现。仿真结果表明,仿真实现与理论分析计算求出的数值结果误差在1%以内,该仿真实现方法是可行的。

Simulation of Access Strategy Based on Cognitive Radio Network

For the application scenarios of the simulation of access strategy based on CRN,access strategy based on CRN is simulated by event scheduling and factually simulation of the behavior of the primary users and CR users is given in this paper.This simulation method takes the event as the basic unit,schedules the time of the event and executes each event in the order of time.This simulation method is also applicable to the simulation achievement of the multiusers chance shared multichannel communications access strategy with different priority.The simulation result shows that:as the error of the numeric calculation result is within 1%,between simulation and theoretical analysis,so the simulation method is feasible.