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International Journal of Antennas and Propagation
Volume 2012, Article ID 615954, 11 pages
http://dx.doi.org/10.1155/2012/615954
Research Article

Channel Modelling for Multiprobe Over-the-Air MIMO Testing

Elektrobit Corporation, Wireless Business Segment, Tutkijantie 8, 90590 Oulu, Finland

Received 28 December 2011; Accepted 20 March 2012

Academic Editor: Moray Rumney

Copyright © 2012 Pekka Kyösti et al. 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.

Abstract

This paper discusses over-the-air (OTA) test setup for multiple-input-multiple-output (MIMO) capable terminals with emphasis on channel modelling. The setup is composed of a fading emulator, an anechoic chamber, and multiple probes. Creation of a propagation environment inside an anechoic chamber requires unconventional radio channel modelling, namely, a specific mapping of the original models onto the probe antennas. We introduce two novel methods to generate fading emulator channel coefficients; the prefaded signals synthesis and the plane wave synthesis. To verify both methods we present a set of simulation results. We also show that the geometric description is a prerequisite for the original channel model.