Title :
Comparison of total system capacity for band sharing between CDMA based non-geostationary satellite-PCNs under imperfect power control conditions
Author :
Aziz, H.M. ; Tafazolli, R. ; Evans, B.G.
Author_Institution :
Centre for Commun. Syst. Res., Surrey Univ., Guildford, UK
Abstract :
The next generation of mobile satellite systems (MSS) will use the constellation of satellites in non-geostationary orbits for global communication, The proposed S-PCNs are Iridium, ICO, Globalstar, Odyssey and Ellipso. The first two systems propose to use a time division multiple access (TDMA) scheme and the others a code division multiple access (CDMA) scheme. It is claimed that CDMA based S-PCNs can share the allocated frequency bands due to the interference resistant property of CDMA. In this paper, we present the results of the investigation on the total system capacity achievable by totally overlapped band sharing between the two systems such as Globalstar and Odyssey under perfect and imperfect power control conditions. Results for a single satellite system operating in a band segmentation approach are also presented for comparison, again under perfect and imperfect power control
Keywords :
channel capacity; code division multiple access; frequency allocation; land mobile radio; mobile satellite communication; personal communication networks; power control; radio spectrum management; radiofrequency interference; CDMA; Ellipso; Globalstar; ICO; Iridium; Odyssey; S-PCN; allocated frequency band sharing; band segmentation approach; code division multiple access; imperfect power control; land mobile satellite channels; mobile satellite systems; multiple access interference; non-geostationary orbits; non-geostationary satellite constellations; overlapped band sharing; perfect power control; satellite personal communication networks; single satellite system; time division multiple access; total system capacity; Artificial satellites; Diversity reception; Downlink; Fading; Interference; Low earth orbit satellites; Multiaccess communication; Power control; Satellite broadcasting; Time division multiple access;
Conference_Titel :
Vehicular Technology Conference, 1997, IEEE 47th
Conference_Location :
Phoenix, AZ
Print_ISBN :
0-7803-3659-3
DOI :
10.1109/VETEC.1997.596354
