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高铁覆盖切换快、周围环境复杂多变。通过对某省市境内高铁沿线传播模型的校正并通过CDMA(code division multiple access)网络EVDO(evolution-data optimized,演进数据最优化)信号的仿真,分析了影响CDMA网络EVDO数据信号的指标参数。结合实际网络特点,通过网络仿真分析并调整实际工作参数,得到指导高铁网络建设的方法,应用于高铁网络建设的优化。
High-speed rail coverage switch quickly, the surrounding complex and ever-changing. Through the calibration of propagation models along a high-speed rail line in some provinces and cities and the simulation of evolution-data optimized (EVDO) signals over CDMA (code division multiple access) networks, the index parameters affecting EVDO data signals in CDMA networks are analyzed. Combined with the actual network characteristics, through the network simulation analysis and adjustment of the actual operating parameters, get the guidance of high-speed rail network construction method, used in the optimization of high-speed rail network construction.