Title :
Performance of band-limited 16-ary DEQAM transmission over mobile satellite communication links
Author :
Cheung, S.W. ; Aghvami, A.H.
Author_Institution :
Kings Coll. London, UK
Abstract :
The authors present the results of a computer simulation study on the performance of 16-ary differentially encoded quadrature-amplitude-modulation (16-ary DEQAM) through nonlinear satellite channels, in the presence of additive white Gaussian noise (AWGN) and adjacent-channel-interference (ACI). It is assumed that the satellite transponder is linear, and each of the Earth stations uses a newly developed solid-state power amplifier (SSPA) for high power amplification. The results are compared with those of a 16-ary DEQAM system employing a conventional travelling wave tube amplifier (TWTA). Results indicate that 16-ary DEQAM transmission for mobile satellite systems employing SSPA´s is promising
Keywords :
amplifiers; amplitude modulation; interference (signal); mobile communication systems; satellite ground stations; satellite relay systems; transponders; white noise; 16-ary differentially encoded quadrature-amplitude-modulation; Earth stations; additive white Gaussian noise; adjacent-channel-interference; band-limited 16-ary DEQAM transmission; computer simulation study; mobile satellite communication links; nonlinear satellite channels; satellite transponder; solid-state power amplifier;
Conference_Titel :
Satellite Systems for Mobile Communications and Navigation, 1988., Fourth International Conference on
Conference_Location :
London
Print_ISBN :
0-85296-367-X
