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Stochastic modelling of Rice fading channels with temporal, spatial and spectral correlation

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2 Author(s)
Kunnari, E. ; Centre for Wireless Commun., Univ. of Oulu, CWC ; Iinatti, J.

A statistical characterisation of a small-scale fading mobile radio channel is presented and a fading simulator for the simulation of multiple input-multiple output multicarrier systems is introduced. The derivation of the equivalent lowpass channel as a function of time, transmit and receive antenna positions and subcarrier frequency, leads to a tapped delay-line model with time, space and frequency-selective taps. The taps are modelled as a sum of a deterministic line-of-sight or dominant scattered path and a zero-mean Gaussian part composed of a number of unresolvable scattered paths, and are therefore Rice fading. The Gaussian parts can have the desired temporal and spatiospectral correlations generated by time-correlation shaping filtering and a space-frequency correlation transformation, respectively. The structure and details of the simulator are presented, and the simulator is shown to achieve good accuracy while retaining a reasonable computational complexity.

Published in:

Communications, IET  (Volume:1 ,  Issue: 2 )

Date of Publication:

April 2007

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