基于改进圆模型的到达角度和时间估计  

AOA and TOA estimation based on an enhanced circular scattering model

作　　者：罗飞[1] 杜明辉[1] 

机构地区：[1]华南理工大学电子与信息学院,广东广州510640

出　　处：《电波科学学报》2007年第5期799-803,共5页Chinese Journal of Radio Science

摘　　要：为提高对到达角度(AOA)和到达时间(TOA)估计的准确性,引入了"有效散射体"和"反射概率"两个有明确物理意义的概念,在单反射圆模型的基础上提出一种改进圆模型,推导出AOA和TOA的分布表达式。仿真结果与实测数据对比表明,相对单反射圆模型而言,改进圆模型的AOA和TOA的估计值与实测结果吻合得更好。To improve the accuracy of the angle of arrival （AOA） and time of arrival （TOA） estimation, this paper introduces two physical concepts, effective scatterer and reflecting probability, and presents an enhanced circular scattering model （ECSM） based on the geometrically based single bounce macrocell model （GBSBM）, the expressions for AOA and TOA distributions are derived. The comparison of simulated results with measured results shows that the estimated results for both AOA and TOA of ECSM are much better agreement with the measured data than those of GBSBM.

关 键 词：电波传播 空时信道模型 单反射圆模型(GBSBM) 到达角度(AOA) 到达时间(TOA) 

分 类 号：TN011[电子电信—物理电子学]