Title :
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
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;
Conference_Titel :
Vehicular Technology Conference, 1999. VTC 1999 - Fall. IEEE VTS 50th
Conference_Location :
Amsterdam
Print_ISBN :
0-7803-5435-4
DOI :
10.1109/VETECF.1999.800126
