摘要
智能天线及其他空间滤波技术的研究与应用为无线信道的研究提出了新的课题－需要对无线信道的时空联合扩散特性进行全面地分析和研究．本文利用射线跟踪技术对典型微小区下信道的时域扩散和角度扩散特性进行了大量仿真．作者按照时域扩散的研究方法，利用角度扩散的一阶矩和二阶中心矩来说明问题．通过典型环境下的仿真，得到了存在直达信号和无直达信号两种接收条件下的角度扩散结果．
Smart antenna and other spatial filtering technologies provide promising improvement to the future wireless communication systems. The successful implement of these technologies demands detailed research and analysis of the temporal and angular characteristics of the wireless channels. This paper introduces some simulation work about the temporal and angular spread characteristics in typical microcell environment using ray tracing technique. The simulation results are divided into two parts: Line of Sight (LOS)'s AND Non-Line of Sight (NLOS)'s. According to the temporal research method, the author uses average angular spread and mean square error of angular spread to describe the characteristics of angular spread. The detailed descriptions of angular spread in typical microcell environment are given finally.
出处
《电子学报》
EI
CAS
CSCD
北大核心
2001年第9期1269-1271,共3页
Acta Electronica Sinica
基金
国家自然科学基金(No.69972022)
关键词
角度扩散
智能天线
空间滤波
天线信道
Communication channels (information theory)
Computer simulation
Dispersion (waves)
Mathematical models
Numerical analysis
Ray tracing
Signal filtering and prediction
Wireless telecommunication systems
