Angular partitioning to yield equal Doppler contributions

Author

Norklit, O. ; Vaughan, Rodney G.

Author_Institution

Ind. Res., Lower Hutt, New Zealand

Volume

48

Issue

5

fYear

1999

fDate

9/1/1999 12:00:00 AM

Firstpage

1437

Lastpage

1442

Abstract

A beam partitioning is introduced for a mobile surrounded uniformly by dense scatterers. The beams generate signals with equal mean Doppler shift contributions. The equal Doppler contribution of each signal is desirable in antenna combining or diversity systems. Beams that correspond to the partitioning are synthesized using the Fourier method, and a fading rate reduction scheme is described. The fading rate reduction is quantified as an increased correlation distance relative to omnidirectional antennas

Keywords

Doppler shift; Fourier analysis; diversity reception; electromagnetic wave scattering; land mobile radio; radiowave propagation; Fourier method; angular partitioning; antenna arrays; antenna combining; antenna diversity systems; beam partitioning; beamforming; correlation distance; dense scatterers; equal mean Doppler shift contributions; fading rate reduction; mobile radio; omnidirectional antennas; Digital communication; Diversity reception; Doppler effect; Doppler shift; Fading; Frequency; Mobile antennas; Scattering; Signal generators; Signal synthesis;

fLanguage

English

Journal_Title

Vehicular Technology, IEEE Transactions on

Publisher

ieee

ISSN

0018-9545

Type

jour

DOI

10.1109/25.790517

Filename

790517