A SAGE Algorithm for Estimation of the Direction Power Spectrum of Individual Path Components

In this contribution, the Fisher-Bingham-5 (FB5) probability density function (pdf) is used to model the shape of the direction power spectral density function (psdf) of individual path components in the radio channel. The FB5 distribution is selected because, among all direction distributions, it m...

Full description

Saved in:
Bibliographic Details
Published inIEEE GLOBECOM 2007 - IEEE Global Telecommunications Conference pp. 3024 - 3028
Main Authors Xuefeng Yin, Lingfeng Liu, Nielsen, D.K., Pedersen, T., Fleury, B.H.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.11.2007
Subjects
Azimuth
Delay
Density functional theory
Dispersion
Electromagnetic propagation
Electromagnetic scattering
Navigation
Power measurement
Power system modeling
Probability density function
Online AccessGet full text

Cover

More Information
Summary:In this contribution, the Fisher-Bingham-5 (FB5) probability density function (pdf) is used to model the shape of the direction power spectral density function (psdf) of individual path components in the radio channel. The FB5 distribution is selected because, among all direction distributions, it maximizes the entropy under the constraints that the first and second distribution moments are specified. A SAGE (space-alternating generalized expectation-maximization) algorithm is derived based on this model for estimation of the parameters characterizing the direction psdf of each path component in a multi-path scenario. The performance of the SAGE algorithm is evaluated using measurement data. Preliminary results show that the estimated direction psdfs of individual path components exhibit different ovalnesses and tilt angles. These density functions are noticeably more concentrated than the corresponding footprints in the Bartlett spectrum.
ISBN:1424410428
9781424410422
ISSN:1930-529X
2576-764X
DOI:10.1109/GLOCOM.2007.573