N. Czink, G. Del Galdo, X. Yin, E. Bonek, J. Ylitalo:
"A Novel Environment Characterization Metric for Clustered MIMO Channels";
Wireless Personal Communications, online (2007).

Kurzfassung englisch:
In thiswork we introduce a novelmetric for characterizing the double-directional propagation environment and use this metric to assess the performance of a SAGE parameter estimator for MIMO channels. Using the IlmProp, a geometry-based MIMO channel modeling tool, we construct synthetic channels for three different scenarios showing: (i) well separated clusters containing dense propagation paths, and single-bounce scattering; (ii) partly overlapping clusters containing widely spread propagation paths, and single-bounce scattering; (iii) unclustered multipath components ("rich scattering"), and double-bounce only scattering. We model the scatterers and the receiver in the environment as fixed, but
the transmitter as moving. The Initialization and Search-Improved SAGE (ISIS) estimation tool is used to extract the propagation paths from the constructed channels. Both true and estimated paths are fed to the new system-independent metric which genuinely reflects the structure of the channel and the compactness of the propagation paths. We use this metric to decide on the accuracy of the channel estimator. The results show a convincing agreement between true and estimated paths.

MIMO; metrics; clustering;

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Erstellt aus der Publikationsdatenbank der Technischen Universitšt Wien.