Title :
Payload nonlinearity impact on the Globalstar forward link multiplex .II. System analysis
Author :
De Gaudenzi, Riccardo
fDate :
5/1/1999 12:00:00 AM
Abstract :
For pt. I see ibid., vol.48, no.3, p.960-76 (1999). This paper extends at system level the analysis of on-board nonlinearity effects covered by a companion paper. A satellite personal communication network (S-PCN) like Globalstar utilizing bent-pipe transponders and active phased-array antennas in conjunction with code-division multiple access (CDMA) is considered. The present analysis incorporates the effects of payload nonlinearity, variable-rate vocoders, and multibeam interference. It is shown that nonlinearity effects on the system capacity are generally negligible except for extremely loaded beam conditions which are rare events
Keywords :
active antenna arrays; antenna phased arrays; channel capacity; code division multiple access; mobile satellite communication; multibeam antennas; multiplexing; multiuser channels; nonlinear distortion; personal communication networks; radiofrequency interference; satellite antennas; satellite links; transponders; vocoders; CDMA; Globalstar forward link multiplex; S-PCN; active phased-array antennas; bent-pipe transponders; code-division multiple access; loaded beam conditions; multibeam interference; on-board nonlinearity effects; payload nonlinearity; satellite personal communication network; system analysis; system capacity; variable-rate vocoders; Artificial satellites; Interference; Multiaccess communication; Payloads; Personal communication networks; Power control; Radio frequency; Satellite broadcasting; Space technology; Vocoders;
Journal_Title :
Vehicular Technology, IEEE Transactions on
