Title :
Smart antenna system and its application in low-Earth-orbit satellite communication systems
Author :
Jeng, S.S. ; Lin, H.-P.
Author_Institution :
Dept. of Electron. Eng., Chung Yuan Christian Univ., Chung Li, Taiwan
fDate :
4/1/1999 12:00:00 AM
Abstract :
Space-division-multiple-access is one of the solutions for increasing the system capacity as well as improving the system performance in wireless communications. Experimental studies have been reported; using a smart antenna system to exploit spatial diversity in low-Earth-orbit (LEO) satellite personal communication services (S-PCS). The paper presents direction-of-arrival (DOA) estimation of satellite signals, variation of spatial signature and DOA with frequencies, elevation angle and motion, and diversity gain achieved by using an antenna array in line-of-sight (LOS) and shadowing scenarios. For typical environments, such as LOS and light or heavy shadowing cases, the experimental results reveal rich spatial diversity and high diversity gain when using a smart antenna system in LEO S-PCS
Keywords :
adaptive antenna arrays; direction-of-arrival estimation; diversity reception; mobile satellite communication; multipath channels; multiuser channels; personal communication networks; satellite antennas; space division multiple access; DOA estimation; LEO S-PCS; LEO satellite PCS; LOS; antenna array; direction-of-arrival; diversity gain; elevation angle; experimental results; frequencies; high diversity gain; line-of-sight; low-Earth-orbit satellite communication systems; motion; multipath components; personal communication services; satellite signals; shadowing; smart antenna system; space-division-multiple-access; spatial diversity; spatial signature; system capacity; system performance; wireless communications;
Journal_Title :
Microwaves, Antennas and Propagation, IEE Proceedings
DOI :
10.1049/ip-map:19990563
