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Ultrawideband propagation channels - Theory, measurement, and modeling

In English

Författare

  • Andreas Molisch

Summary, in English

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.

Publiceringsår

2005

Språk

Engelska

Sidor

1528-1545

Publikation/Tidskrift/Serie

IEEE Transactions on Vehicular Technology

Volym

54

Issue

5

Dokumenttyp

Artikel i tidskrift

Förlag

IEEE - Institute of Electrical and Electronics Engineers Inc.

Ämne

  • Electrical Engineering, Electronic Engineering, Information Engineering

Nyckelord

  • ultrawideband (UWB)
  • channel model
  • propagation

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 1939-9359