TY - GEN
T1 - The effect of platform displacement on a HAPS CDMA system with multibeam antennas
AU - Huang, Jeng Ji
AU - Liou, Yi Shing
AU - Ferng, Huei Wen
PY - 2008
Y1 - 2008
N2 - 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.
AB - 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.
KW - Capacity
KW - Code division multiple access (CDMA)
KW - High altitude platform station (HAPS)
KW - Multibeam antennas
KW - Platform instability
UR - http://www.scopus.com/inward/record.url?scp=69949147072&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=69949147072&partnerID=8YFLogxK
U2 - 10.1109/PIMRC.2008.4699527
DO - 10.1109/PIMRC.2008.4699527
M3 - Conference contribution
AN - SCOPUS:69949147072
SN - 9781424426447
T3 - IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC
BT - 2008 IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2008
T2 - 2008 IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2008
Y2 - 15 September 2008 through 18 September 2008
ER -