Open Access

Modified Spatial Channel Model for MIMO Wireless Systems

  • Lorenzo Mucchi1Email author,
  • Claudia Staderini1,
  • Juha Ylitalo2 and
  • Pekka Kyösti3
EURASIP Journal on Wireless Communications and Networking20072007:068512

DOI: 10.1155/2007/68512

Received: 13 June 2007

Accepted: 11 November 2007

Published: 17 December 2007

Abstract

The third generation partnership Project's (3GPP) spatial channel model (SCM) is a stochastic channel model for MIMO systems. Due to fixed subpath power levels and angular directions, the SCM model does not show the degree of variation which is encountered in real channels. In this paper, we propose a modified SCM model which has random subpath powers and directions and still produces Laplace shape angular power spectrum. Simulation results on outage MIMO capacity with basic and modified SCM models show that the modified SCM model gives constantly smaller capacity values. Accordingly, it seems that the basic SCM gives too small correlation between MIMO antennas. Moreover, the variance in capacity values is larger using the proposed SCM model. Simulation results were supported by the outage capacity results from a measurement campaign conducted in the city centre of Oulu, Finland.

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Authors’ Affiliations

(1)
CNIT, University of Florence
(2)
Centre for Wireless Communications, University of Oulu
(3)
Elektrobit

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Copyright

© Lorenzo Mucchi et al. 2007

This article is published under license to BioMed Central Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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