Title :
Site-diversity and time-diversity fade duration statistics for fade countermeasures of DTH/VSAT Ku-band satellite services
Author :
Pan, Qing Wei ; Allnutt, Jeremy E. ; Tsui, Charles
Author_Institution :
Manukau Inst. of Technol., Auckland, New Zealand
Abstract :
In satellite transmissions at frequencies above 10 GHz, deep signal fading, and hence severe outage, is mainly attributed to rain. Site-diversity is an effective form of fade countermeasure. Statistics of seasonal fade variations, together with fade durations and fade intervals characteristics, are needed to give a detailed insight for VSAT system design. The paper presents a year´s worth of site-diversity data measured at an equatorial mountainous coastal location and concentrates on the joint duration aspects. Time-diversity data analysis is also covered. A companion paper (Pan, Q.W. et al., Int. J. Satellite Commun., vol.19, no.4, p.363-84, 2001) deals mainly with joint excessiveness statistics, average fade durations and duration log-normal distributions.
Keywords :
direct broadcasting by satellite; diversity reception; electromagnetic wave absorption; electromagnetic wave scattering; fading; microwave propagation; rain; statistical analysis; Ku-band satellite services; broadcast services; direct-to-home VSAT satellite services; direct-to-home very-small-aperture terminal satellite services; duration log-normal distributions; equatorial mountainous coastal location; fade countermeasures; fade duration statistics; fade intervals; outage; rain; seasonal fade variations; signal fading; site-diversity; time-diversity; Drives; Electronic countermeasures; Frequency; Quality of service; Rain fading; Satellite broadcasting; Sea measurements; Statistical distributions; Statistics; System analysis and design;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2004. IEEE
Print_ISBN :
0-7803-8302-8
DOI :
10.1109/APS.2004.1330512
