Fractal Brownian Motion Model of Multipath Fading Channels
Zhu Shi · Dianzi xuebao · 2003
This paper introduces fractal theory into the research of multipath fading channels,and a novel Fractal Brownian Motion (FBM) model is established.By studying the increments′ probability distribution,statistical self similarity,generalized power spectra and fractal dimension of multipath fading signals,it shows the inherent relationship between the multipath fading and FBM,and that fractal dimension is a key parameter for describing the signal propagation in wireless channels.Finally,we apply FBM model to the reconstruction of multipath signals,yielding reasonably accurate replication.Simulation results indicate that the FBM model could describe multipath fading phenomena more accurately and effective than the conventional statistical models.