| 蜂窝环境下功率空时分布仿真的改进算法 |
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| 引用本文： | 罗飞,杜明辉.蜂窝环境下功率空时分布仿真的改进算法[J].华南理工大学学报(自然科学版),2007,35(1):28-33. |
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| 作者姓名： | 罗飞 杜明辉 |
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| 作者单位： | 华南理工大学,电子与信息学院,广东,广州,510640 |
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| 基金项目： | 广东省自然科学基金资助项目(05006593) |
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| 摘 要： | 为更好地对蜂窝环境下的功率空时分布进行仿真,引入“有效散射体”和“反射概率”两个有明确物理意义的概念,在单反射椭圆模型(GBSBEM)的基础上提出一种改进的仿真算法.该算法能更准确灵活地描述蜂窝环境下信号的功率空时特性.仿真结果与实测数据对比表明,在功率时延谱预测方面,改进算法与GBSBEM有同样的精度,而在功率方位谱预测方面,前者的均方相对误差要小于后者.
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| 关 键 词： | 无线传播 空时分布 单反射椭圆模型 功率时延谱 功率方位谱 |
| 文章编号： | 1000-565X（2007）01-0028-06 |
| 修稿时间： | 2006-02-23 |
Enhanced Algorithm for Simulation of Power Spatial-Temporal Distribution in Cellular Environments |
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| Luo Fei,Du Ming-hui.Enhanced Algorithm for Simulation of Power Spatial-Temporal Distribution in Cellular Environments[J].Journal of South China University of Technology(Natural Science Edition),2007,35(1):28-33. |
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| Authors: | Luo Fei Du Ming-hui |
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| Institution: | School of Electronic and Information Engineering, South China Univ. of Tech. , Guangzhou 510640, Guangdong, China |
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| Abstract: | In order to make a better simulation of the power spatial-temporal distribution in cellular environments,two concepts with definite physical meanings,namely "effective scatterer" and "reflecting probability",are introduced to propose an enhanced simulation algorithm based on the Geometrically Based Single Bounce Elliptical Mo-del (GBSBEM).The enhanced algorithm can characterize the power spatial-temporal distribution in cellular environments more accurately and flexibly.The comparison between the simulated and the measured results shows that,in the prediction of power delay spectra,the enhanced algorithm and the GBSBEM are of the same precision,while in the prediction of power azimuth spectra,the former is of a smaller mean-square relative error than the latter. |
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| Keywords: | radio broadcasting spatial-temporal distribution geometrically based single bounce elliptical model power delay spectrum power azimuth spectrum |
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