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A simulated method of modeling wireless channel based on CDL

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5 Author(s)
Jinbao Zhang ; Southeast Univ., Nanjing, China ; Zaichen Zhang ; Xiaoyan Wang ; Zhenhui Tan
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Rapid development of wireless communications gives prominence to simulation. Simulated methods of modeling wireless channel are of significance to wireless communications simulation on both link and system levels. There have been quite a lot of theoretical models which have accurately described the characteristics of wireless channel. However when it comes to the realization of wireless channel in simulation, there seem no accurate enough methods and conclusions. Current simulated methods are mostly built up based on TDL, which is a common framework to model micro fading and mainly focused on micro fading. As to macro fading, Doppler-effect and polarization of electromagnetic wave, this method behaves not well enough, and other statistical approximations is indispensable, such as shadow fading, Doppler power spectrum density and so on. To the question existed, this paper proposes a simulated method to accurately model wireless channel under given wireless environment, on the basis of cluster delay line. This method is highlighted with comprehensive consideration of macro and micro fading, Doppler, multi-path and polarization effect. Analysis and simulation results on characteristics of wireless channel such as signal envelope, coherent time and bandwidth, validate the proposed model.

Published in:

Wireless Communications and Signal Processing (WCSP), 2010 International Conference on

Date of Conference:

21-23 Oct. 2010