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  • Research Article
  • Open Access

Modified Spatial Channel Model for MIMO Wireless Systems

  • 1Email author,
  • 1,
  • 2 and
  • 3
EURASIP Journal on Wireless Communications and Networking20072007:068512

https://doi.org/10.1155/2007/68512

  • Received: 13 June 2007
  • Accepted: 11 November 2007
  • Published:

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.

Keywords

  • City Centre
  • Wireless System
  • MIMO System
  • Modify Spatial
  • Measurement Campaign

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Authors’ Affiliations

(1)
CNIT, University of Florence, via santa marta 3, Florence, 50139, Italy
(2)
Centre for Wireless Communications, University of Oulu, Oulu, 90014, Finland
(3)
Elektrobit, Oulu, 90570, Finland

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