Title :
Implementation of a space diversity system for Ka-band satellite communications
Author_Institution :
Fondazione Ugo Bordoni, Rome, Italy
Abstract :
Satellite links operating at Ka-band suffer large signal fades when rainfall occurs along the path. Space diversity is a technique to overcome this problem. In the framework of the Olympus and Italsat communications experiments, a complex space diversity system has been designed. The main features of this system are: down-paths dynamic delay compensation; hitless switching; switching algorithms and fade detection parameters under software control; and error-free links between diversity stations. The problems that arise in implementing the proposed diversity system are discussed, and the results of the simulations performed using attenuation time series extrapolated from data at 11.45 GHz are presented
Keywords :
compensation; delays; diversity reception; extrapolation; fading; microwave propagation; rain; satellite communication; telecommunication switching; time series; 11.45 GHz; Italsat; Ka-band satellite communications; Olympus; SHF; attenuation time series; complex space diversity system; dynamic delay compensation; error-free links; fade detection; hitless switching; rainfall; signal fades; simulations; software control; switching algorithms; Artificial satellites; Attenuation measurement; Communication switching; Frequency measurement; Optical fibers; Performance evaluation; Rain fading; Satellite communication; Satellite ground stations; Telecommunication switching;
Conference_Titel :
Communications, 1993. ICC '93 Geneva. Technical Program, Conference Record, IEEE International Conference on
Conference_Location :
Geneva
Print_ISBN :
0-7803-0950-2
DOI :
10.1109/ICC.1993.397530
