交通专用短程通信系统信道特性仿真测试

Channel Simulation for DSRC System

专用短程通信协议(DSRC)为实现对车辆的实时、动态和智能化管理提供了技术规范,是智能交通系统(ITS)的核心技术之一。本文基于基带信号产生和信道仿真仪器N5106A、矢量信号发生器E4438C和信号分析仪N9020A等Angilent测试仪模拟真实环境因素,讨论了面向DSRC通信的信道模拟和测试平台,结果表明在类似的信道作用下,信号接收质量存在一定的随机性,在帧结构的保护时隙范围之内,可以通过均衡消除延时的影响。为ITS系统的设计提供了参考。

As one of the core technology of the intelligent transportation system, the dedicated short range communication （DSRC） provides technical specifications for the realization of the vehicle＇s real-time, dynamic and intelligent management. Based on the angilent＇s instrument NS106A, which can generate baseband signals and provide the channel emulation, ESG vector signal generator E4438C, and MXA signal analyzer N9020A. The building of testing platform and the method of the channel simulation for DSRC are discussed in this paper. The result shows that under the effect of similar channel, there was some random condition in the quality of signal receiving. In the range of protecting time interval of frame, it can remove the affecting on delay by equilibrium. To provide a reference for the ITS design.