Title :
A novel TDMA frame structure for geostationary mobile satellite systems
Author :
El-Hennawey, Mohamed S. ; Israr, Junaid A. ; Mahmoud, Samy A.
Author_Institution :
Dept. of Syst. & Comput. Eng., Carleton Univ., Ottawa, Ont., Canada
Abstract :
A novel TDMA frame structure is proposed for a regional geostationary (GEO) mobile satellite service (MSS) system. It supports multiple users´ data rates (8 kb/s to 64 kb/s) with hand-held terminals and permits dynamic change in user data rate during the call. The traditional frame structures provide variable rate service by assigning several time slots to higher data rate users. This is very inefficient in GEO-MSS systems since guard time and other overhead bits must exist in each time slot. The basic idea of the proposed scheme is to defragment time slots frequently in a frame to minimize noninformation bits and hence provides higher capacity. The improvement in the frame capacity is reported along with the procedure for the frame defragmentation dynamics
Keywords :
channel capacity; mobile satellite communication; personal communication networks; time division multiple access; 8 to 64 kbit/s; GEO mobile satellite service; GEO-MSS systems; TDMA frame structure; dynamic change; frame capacity; frame defragmentation dynamics; frame structures; geostationary mobile satellite systems; guard time; hand-held terminals; link budget analysis; multiple users data rates; noninformation bits minimisation; overhead bits; personal communications; satellite link capacity; time slots assignment; variable rate service; Drives; Frequency; Ice; Mobile antennas; Mobile computing; Performance gain; Satellite antennas; Systems engineering and theory; Telephone sets; Time division multiple access;
Conference_Titel :
Global Telecommunications Conference, 1998. GLOBECOM 1998. The Bridge to Global Integration. IEEE
Conference_Location :
Sydney,NSW
Print_ISBN :
0-7803-4984-9
DOI :
10.1109/GLOCOM.1998.776614
