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为提高对空时到达分布预测的准确度,介绍了一种适用于宏小区高天线环境下波达角度和时间预测、的改进的圆散射模型。分别给出了波达角度和时间分布概率密度函数的表达式。仿真结果与实测数据的比较表明,较传统的基于散射体的单反宏小区模型而言,改进的圆模型能更合理地对传播建模,且在波达角度和时间的预测方面具有更高的准确度。
In order to improve the accuracy of the prediction of space-time arrival distribution, an improved circular scattering model suitable for the prediction of arrival angle and time in a macro-antenna with high antenna is introduced. The expression of probability density function of angle of arrival and time distribution is given respectively. The comparison between the simulation results and the measured data shows that the improved circular model can model the propagation more reasonably than the traditional SLR-based macrocell model and has a higher estimation of the angle of arrival and the time Accuracy.