DocumentCode :
1013377
Title :
Site diversity for satellite earth terminals and measurements at 28 GHz
Author :
Lin, Kuan-Ting ; Levis, Curt A.
Author_Institution :
Dept. of Electr. Eng., Ohio State Univ., Columbus, OH, USA
Volume :
81
Issue :
6
fYear :
1993
fDate :
6/1/1993 12:00:00 AM
Firstpage :
897
Lastpage :
904
Abstract :
This work reviews site diversity concepts and models and presents the results of a site diversity experiment, in which radiometers were used to measure attenuation on Earth-space paths, performed at Columbus, Ohio, for a period of one year. Attenuation statistics are presented first in the form of the joint probability density function of attenuation at the two sites. From these are derived the cumulative two-dimensional distribution of attenuation at both sites, the cumulative distribution of attenuation at each site, the effective cumulative distribution of attenuation for a diversity system that always switches to the better of two signals, and the effective cumulative distribution of attenuation for a system with maximal-ratio signal combining. The switched-system diversity gain is compared with D.B. Hodge´s (1982) predictive model, and the diversity improvement is compared with L. Boithias´ (Radiowave Propagation, McGraw-Hill, 1987) model. Fade-duration and interfade-interval statistics are presented for each site and for systems that use switching and maximal-ratio combining. Rain-rate and interrainfall interval statistics are included
Keywords :
diversity reception; radiowave propagation; rain; satellite ground stations; satellite links; tropospheric electromagnetic wave propagation; 28 GHz; Columbus; Earth-space paths; Ohio; SHF; attenuation statistics; cumulative two-dimensional distribution; interfade-interval statistics; interrainfall interval statistics; joint probability density function; maximal-ratio signal combining; models; radiometers; rain rate statistics; satellite earth terminals; site diversity experiment; switched-system diversity gain; Attenuation measurement; Diversity reception; Performance evaluation; Predictive models; Probability density function; Radiometers; Satellite broadcasting; Satellite ground stations; Statistical distributions; Switches;
fLanguage :
English
Journal_Title :
Proceedings of the IEEE
Publisher :
ieee
ISSN :
0018-9219
Type :
jour
DOI :
10.1109/5.257686
Filename :
257686
Link To Document :
بازگشت