Improving chaos equations fading models for Ka band satellite links

Author

Costamagna, E. ; Favalli, L. ; Gamba, P. ; Tarantola, F.

Author_Institution

Dept. of Electron., Pavia Univ., Italy

Volume

4

fYear

2002

fDate

6/24/1905 12:00:00 AM

Firstpage

1990

Abstract

The paper relates to some developments in modeling attenuation time series, measured on Ka band satellite links during rain events, by means of sample generators using chaotic dynamical systems. Weighted sums of Lorenz strange attractors are first used to model target sequences by themselves ("global approach"), improving procedures already introduced. Then, similar generators are used to model only low-pass versions of the same sequences, while hidden Markov models (HMM) or shaped random number series are used to mimic the complementary high-pass sequences.

Keywords

chaos generators; electromagnetic wave absorption; electromagnetic wave scattering; fading channels; hidden Markov models; microwave propagation; rain; satellite links; sequences; series (mathematics); time series; tropospheric electromagnetic wave propagation; HMM; Ka band satellite links; Lorenz strange attractors; attenuation time series; chaos equations; chaotic dynamical systems; fading; hidden Markov models; rain; shaped random number series; Attenuation measurement; Chaos; Equations; Fading; Hidden Markov models; Rain; Sampling methods; Satellites; Solid modeling; Time measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 2002. VTC Spring 2002. IEEE 55th

Print_ISBN

0-7803-7484-3

Type

conf

DOI

10.1109/VTC.2002.1002971

Filename

1002971