Title :
Mobile TDM/TDMA system with active array antenna
Author :
Suzuki, Rwtaro ; Matsumoto, Yasushi ; Miura, Ryu ; Hamamoto, Naokazu
Author_Institution :
Commun. Res. Lab., MPT, Tokyo, Japan
Abstract :
A multicarrier time-division multiple-access (TDMA) system is proposed for future mobile satellite communications systems that include a multisatellite system. This TDMA system uses an active array antenna in which the digital beamforming technique is adopted to control the antenna beam direction. The antenna beamforming is carried out at the baseband frequency by using digital signal processing. In the proposed system, TDM/TDMA with a time-division duplex technique is adopted for the satellite link between the mobile earth station and the HUB station in order to remove the diplexer from each mobile antenna element
Keywords :
antenna phased arrays; mobile radio systems; satellite relay systems; time division multiple access; time division multiplexing; HUB station; TDM/TDMA; active array antenna; antenna beam direction; baseband frequency; digital beamforming; digital signal processing; mobile earth station; multicarrier time-division multiple-access; multisatellite system; satellite link; satellite mobile radio; time-division duplex technique; Antenna arrays; Array signal processing; Baseband; Communication system control; Control systems; Directive antennas; Mobile antennas; Satellite communication; Time division multiple access; Time division multiplexing;
Conference_Titel :
Global Telecommunications Conference, 1991. GLOBECOM '91. 'Countdown to the New Millennium. Featuring a Mini-Theme on: Personal Communications Services
Conference_Location :
Phoenix, AZ
Print_ISBN :
0-87942-697-7
DOI :
10.1109/GLOCOM.1991.188630
