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A Matlab-based Object-Oriented Approach to Multipath Fading Channel Simulation


Cyril Iskander


21 Feb 2008 (Updated )

This white paper explains the algorithms used in the Communications Toobox's fading channel function

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Multipath fading channel simulators are essential components of wireless systems physical layer simulations. This white paper presents a MATLAB-based approach to multipath fading channel simulation.

Section II presents an overview of popular methodologies for the simulation of multipath fading channels. Two effects must be simulated: the time selectivity of the channel (Doppler spreading) due to motion, and the frequency selectivity (time spreading) due to resolvable multipath components. Simulation approaches are reviewed for both these tasks.

Section III presents an overview of the simulation methodology used in our channel simulator. The simulator employs an interpolated filtered Gaussian noise source to simulate the Doppler spreading, followed by a bandlimited channel transformation to efficiently simulate the multipath dispersion. Both Rayleigh and Rician processes can be generated, for a set of different Doppler spectra.

Section IV presents the application programming interface (API) of the Communications Toolbox's channel functions, along with channel object properties. Examples illustrate how to create channel objects, use them in a simulation, and visualize simulation quantities using the channel visualization tool.

Simulation examples are given in Section V. The statistical performance is evaluated in terms of the simulated fading processes' probability distributions, Doppler spectra and autocovariances.

Required Products Communications System Toolbox
Signal Processing Toolbox
MATLAB release MATLAB 7.5 (R2007b)
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Comments and Ratings (14)
21 Nov 2013 hongjiang lei

hongjiang lei

How can I dowload?

07 Oct 2013 gang


03 Oct 2013 hou



18 May 2012 Angel


22 Jan 2012 mahmod


thanks alot

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14 Jun 2011 yang lin

yang lin

how can I download

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21 Feb 2010 Guan Gui

Guan Gui

01 Aug 2008 David Xiang


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08 Jul 2008 Tarakapraveen Uppalapati

Very good file and very useful for the beginner of the channel simulation using OOP.

06 Jun 2008 PP Zhu  
07 Apr 2008 Solomon Uzoaru

I am yet to grab the whole stuff!

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20 Mar 2008 David Donovan

Exactly what I was looking for. I was wondering what was going on inside of rayleighchan() and friends!

06 Mar 2008 dd ddd


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28 Feb 2008 huzaifa kapasi

excellent reference ... many thanks

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