CPL - Chalmers Publication Library
| Utbildning | Forskning | Styrkeområden | Om Chalmers | In English In English Ej inloggad.

Model selection for investigation of the field distribution in a reverberation chamber

Xiaoming Chen (Institutionen för signaler och system, Antenner)
Progress In Electromagnetics Research M (1937-8726). Vol. 28 (2013), p. 169–183.
[Artikel, refereegranskad vetenskaplig]

In this work two model selection criteria, i.e., Akaike's information criterion (AIC) and minimum description length (MDL), are applied to measurements in a RC with Rayleigh, Rician, Nakagami, Bessel K, and Weibull distributions as the distribution candidate set. In spite of small differences of the AIC and MDL tests (due to their different penalty terms on distribution parameters), both criteria result in similar conclusions. Results show that the Rayleigh distribution provides the overall good fit to the Cartesian field amplitude, especially for an overmoded RC, and that the Weibull distribution provides good fit to the Cartesian field amplitude in an undermoded or loaded RC. In addition, it is found that both the Rician and Weibull distributions provide improved approximations of the Cartesian field amplitude in a loaded RC with non-negligible unstirred components and that the transition from undermoded RC to overmoded RC depends not only on the operating frequency and mode-stirrer efficiency (as it is commonly believed) but also on source stirring and RC loading.

Nyckelord: Akaike's information criterions, Cartesians, Distribution parameters, Field amplitudes, Field distribution, Minimum description length, Model Selection, Model selection criteria, Nakagami, Operating frequency, Overmoded, Penalty term, Rayleigh, Rayleigh distributions, RC loading



Denna post skapades 2015-04-30.
CPL Pubid: 216121

 

Läs direkt!


Länk till annan sajt (kan kräva inloggning)


Institutioner (Chalmers)

Institutionen för signaler och system, Antenner (2005-2014)

Ämnesområden

Annan elektroteknik och elektronik

Chalmers infrastruktur