Effect of positional instability of an aerial platform on its CDMA performance

Author

El-Jabu, Bashir ; Steele, Raymond

Author_Institution

Dept. of Electron. & Comput. Sci., Southampton Univ., UK

Volume

5

fYear

1999

fDate

1999

Firstpage

2471

Abstract

The effect of the changes in the position and inclination of an aerial platform (AP) on the number of users per cell (M) in a code division multiple access (CDMA) cellular system is described. The AP at 21 km uses a multiple beam antenna system to create elliptical cells on the Earth´s surface. Vertical errors in altitude of the AP of ±0.5 km cause M to decrease by 1 to 2%, while horizontal displacement errors of up to 0.3 km result in a decrease in M of approximately 1%. An inclination of 5° from the horizontal significantly impairs M by 38%

Keywords

cellular radio; code division multiple access; multibeam antennas; stability; 21 km; CDMA; aerial platform; cellular system; code division multiple access; elliptical cells; horizontal displacement errors; multiple beam antenna; performance; positional instability; vertical altitude errors; Base stations; Costs; Directional antennas; Earth; Equations; Land mobile radio; Mobile communication; Multiaccess communication; Satellite ground stations; Telecommunication traffic;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 1999. VTC 1999 - Fall. IEEE VTS 50th

Conference_Location

Amsterdam

ISSN

1090-3038

Print_ISBN

0-7803-5435-4

Type

conf

DOI

10.1109/VETECF.1999.800126

Filename

800126