Title :
The effect of platform displacement on a HAPS CDMA system with multibeam antennas
Author :
Huang, Jeng-Ji ; Liou, Yi-Shing ; Huei-Wen Ferng
Author_Institution :
Dept. of Appl. Electron. Technol., Nat. Taiwan Normal Univ., Taipei
Abstract :
High altitude platform stations (HAPSs) can be displaced by stratospheric winds. In this paper, a HAPS code division multiple access (CDMA) cellular system is considered, and the impact of platform displacement on both the cell deployment movement and the uplink and downlink capacity is examined under two types of multibeam antennas. One type is that the directions of the main lobes can be adapted to make cell centers stay unchanged during platform displacement; the other is with a fixed beam projection pattern at all times. From numerical results it is observed that the former is effective in minimizing cell deployment movement, whereas the latter is advantageous to avoid capacity variations.
Keywords :
antenna radiation patterns; cellular radio; code division multiple access; multifrequency antennas; HAPS CDMA system; cell deployment movement; cellular system; code division multiple access; downlink capacity; fixed beam projection pattern; high altitude platform stations; multibeam antennas; platform displacement; uplink capacity; Computer science; Costs; Downlink; Interference; Millimeter wave communication; Millimeter wave technology; Mobile communication; Multiaccess communication; Phased arrays; Shadow mapping; capacity; code division multiple access (CDMA); high altitude platform station (HAPS); multibeam antennas; platform instability;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2008. PIMRC 2008. IEEE 19th International Symposium on
Conference_Location :
Cannes
Print_ISBN :
978-1-4244-2643-0
Electronic_ISBN :
978-1-4244-2644-7
DOI :
10.1109/PIMRC.2008.4699527
