摘要
文中首先介绍了无线个域网所要面对的各种干扰及它们各自的特点 ,给出干扰的拓扑结构和传播模型 ;针对干扰的特点 ,由阻塞率的模型 ,经过数学变换推导出以干扰总电平为变量的统计模型 ,以此为基础分析干扰的统计特性 ;利用统计模型分析跳频技术在WPAN应用环境下性能的同时 ,也利用有关软件对跳频技术在这些干扰环境中的性能作了仿真 ,从两者比较结果中可以看出 ,干扰的统计模型是比较准确的 ,它对今后的实际研究工作具有一定的指导意义。
The types and characteristics of jamming that WPAN (Wireless Personal Area Network) will encounter are introduced first in this paper. The topology of jamming and propagation model are proposed and the congestion is given according to the characters.Then the statistical of jamming, whose parameter is the expectation of total jamming level, is obtained by mathematic transform. Based on the model, the statistical character of jamming is analyzed, and the probability distribution function and the probability density function of total jamming level are also given. An analysis on jamming rejection performance of FH (Frequency Hopping) under WPAN conditions is made by means of the statistical model, and the simulation is done as well. The comparison between analysis result and simulation result shows that the statistical model is very instructive to the study work for the future.
出处
《电波科学学报》
EI
CSCD
2003年第1期75-81,共7页
Chinese Journal of Radio Science
基金
国家自然科学基金资助项目 (No .6 0 0 72 0 16 )
教育部科学技术研究重点项目(99176 )
