摘要
本文研究多径衰落信号的多重分形性质 ,分析并指出了信号多重分形维数是描述无线信道传播特性的重要参数 ;计算了多径衰落信号的多重分形维数及其分形参数 ;在此基础上提出了一种新的无线信道模型 ;结合分形插值方法 ,对多径衰落信号的重构进行了研究 .仿真结果表明 ,无线信道的多重分形模型与传统的统计模型相比更有效、更准确 .
Fractal characteristic of multipath fading signal is studied in the paper which shows that multifractal dimension is a key parameter for describing the signal propagation in wireless channels.The multifractal dimension and fractal parameter are calculated.Then a novel channel model is proposed and fractal interpolation is applied to reconstruct the signals.Simulation results show that the new model outperforms the conventional statistic models in both effectiveness and accuracy.
出处
《电子学报》
EI
CAS
CSCD
北大核心
2001年第5期645-648,共4页
Acta Electronica Sinica
基金
国家自然科学基金! (No .60 0 72 0 4 0 )
博士点基金! (No .956982 3)
关键词
多径衰落信道
多重分形模型
移动通信
multipath fading signal
channel model
multifractal
fractal interpolation