Title :
Spread spectrum FDMA over high speed TDM transmission system for multimedia satellite communications
Author :
Kazama, Hikaru ; Kobayashi, Kiyoshi ; OTSU, Tom ; Araki, Katsuhiko
Author_Institution :
NTT Wireless Syst. Labs., Kanagawa, Japan
Abstract :
It is desired to realize high speed portable wireless terminals that offer a rapid network access anytime and anywhere. Satellite communications have the potential to realize such terminals because of its wide coverage area. This paper proposes a superposed spread spectrum FDMA (SS-FDMA) signaling over a high speed TDM signal transmission scheme to realize A4 size portable user terminals. Feasibility studies of a multimedia satellite communication system employing the proposed scheme are also described. Under present satellite performance and interference conditions, it is clarified that the system can achieve the following performance: the SS-FDMA signal speed for the access link is about 9.6 kbit/s, the TDM signal speed for the supply link is about 8 Mbit/s and the capacity of simultaneous SS-FDMA signal transmitting terminals is about 256
Keywords :
frequency division multiple access; multimedia communication; satellite communication; spread spectrum communication; telecommunication signalling; telecommunication terminals; time division multiplexing; 8 Mbit/s; 9.6 kbit/s; A4 size portable user terminals; SS-FDMA signal speed; TDM signal speed; access link; capacity; high speed TDM transmission system; high speed portable wireless terminals; multimedia satellite communications; spread spectrum FDMA; spread spectrum signalling; superposed signals; supply link; Frequency division multiaccess; ISDN; Interference; Multimedia communication; Multimedia systems; Satellite communication; Satellite ground stations; Spread spectrum communication; Time division multiplexing; Web and internet services;
Conference_Titel :
Spread Spectrum Techniques and Applications, 1998. Proceedings., 1998 IEEE 5th International Symposium on
Conference_Location :
Sun City
Print_ISBN :
0-7803-4281-X
DOI :
10.1109/ISSSTA.1998.722470
