Computer Science ›› 2017, Vol. 44 ›› Issue (3): 84-88.doi: 10.11896/j.issn.1002-137X.2017.03.020

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Doppler Effect and Analysis of Signals in Three-dimensional Channel Model

CHEN Wen-wen, WANG Ya-lin and ZHOU Jie   

  • Online:2018-11-13 Published:2018-11-13

Abstract: In the modeling of three dimensional (3D) wireless communication channels,an exponential probability density function for elevation angle (EA) distributions in different environments was proposed in this paper and then the wireless channels were implemented under this distribution.Furthermore,this paper simulated and analyzed the Doppler power spectrum density (PSD) and signal characteristics of terminals.This paper derived closed-form expressions for Doppler PSDs by using approximate algorithm.Meanwhile,the PSDs of envelope and squared envelope of arrival signals and probability density function of delay phase difference in a Rayleigh fading channel are investigated.Simulation results show that the channel parameter estimation of this model satisfies reference theories and practical experiences.In addition,it has a singular variable which is benefit to adapt to different actual channel environments.The model which we provided can be applied to parameter estimation of multiple wireless communication environments.

Key words: Exponential probability density function,Doppler power spectrum density,Envelope of arrival signal,Phase difference

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