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- W2128339739 abstract "This paper presents an overview of ultrawideband (UWB) propagation channels. It first demonstrates how the frequency selectivity of propagation processes causes fundamental differences between UWB channels and conventional (narrowband) channels. The concept of pathloss has to be modified, and the well-known WSSUS model is not applicable anymore. The paper also describes deterministic and stochastic models for UWB channels, identifies the key parameters for the description of delay dispersion, attenuation, and directional characterization, and surveys the typical parameter values that have been measured. Measurement techniques and methods for extracting model parameters are also different in UWB channels; for example, the concepts of narrowband channel parameter estimation (e.g., maximum-likelihood estimation) have to be modified. Finally, channel models also have an important impact on the performance evaluation of various UWB systems." @default.
- W2128339739 created "2016-06-24" @default.
- W2128339739 creator A5071725365 @default.
- W2128339739 date "2005-09-01" @default.
- W2128339739 modified "2023-09-30" @default.
- W2128339739 title "Ultrawideband Propagation Channels-Theory, Measurement, and Modeling" @default.
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- W2128339739 doi "https://doi.org/10.1109/tvt.2005.856194" @default.
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