Exact crossing rates of dual diversity over unbalanced correlated Rayleigh channels

Author

Filho, José Cândido S Santos ; Fraidenraich, Gustavo ; Yacoub, Michel D.

Author_Institution

Dept. of Commun., Univ. of Campinas, Brazil

Volume

10

Issue

1

fYear

2006

fDate

1/1/2006 12:00:00 AM

Firstpage

37

Lastpage

39

Abstract

General exact expressions for the level crossing rate of dual-branch selection, equal-gain, and maximal-ratio combiners operating over unbalanced correlated Rayleigh channels are derived. Sample numerical results are presented by specializing the general expressions to a space-diversity system with horizontally spaced omnidirectional antennas at the mobile station. It is observed that, whereas power imbalance is invariably prejudicial, fading correlation may be advantageous with closely spaced antennas arranged parallel to the direction of motion.

Keywords

Rayleigh channels; diversity reception; mobile antennas; LCR; MRC; dual diversity technique; dual-branch selection; fading correlation; level crossing rate; maximal-ratio combiner; mobile station; omnidirectional antenna; space-diversity system; unbalanced Rayleigh channel; Antenna measurements; Directive antennas; Distribution functions; Diversity methods; Diversity reception; Genetic expression; Helium; Mobile antennas; Rayleigh channels; Receiving antennas;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2006.1576562

Filename

1576562