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An experimental testbed is described for the characterization of indoor channels with sufficient spatial resolution and sufficient bandwidth to study the practical capacities of MIMOUWB systems. UWB measurements have been made in both frequency and time domains for mutual validation. The opportunity has been taken in this paper to extract narrowband transmission loss models from the resulting UWB database. The extraction of a UWB channel model is work in progress. Ultra-WideBand (UWB) and Multiple-Input Multiple-Output (MIMO) communications both have the potential to increase wireless channel capacities markedly over those conventionally realizable.
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