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International Journal of Scientific and Engineering Research
ISSN Online 2229-5518
ISSN Print: 2229-5518 5    
Website: http://www.ijser.org
scirp IJSER >> Volume 3,Issue 5,May 2012
Methodology for Coexistance of High Altitude Platform Ground Stations and Radio Relay Stations with Reduced Interference
Full Text(PDF, )  PP.113-118  
Author(s)
S.H.A.Al-Samhi, N.S.Rajbut
KEYWORDS
— High Altitude Platform Station, Network Architecture, Coverage of HAPS, Off Axis Angle, Elevation Angle, radio relay stations, Path loss.
ABSTRACT
This paper propounds a novel scheme of mitigation for reducing co-channel interference between HAPGS (High Altitude Platform Ground Station) and radio relay stations. Firstly, in terms of the deployment parameters such as distance between HAPGS, elevation angle of the HAPGS as well as that the azimuth angles of the radio relay station. Then, the effects on radio relay station are due to the rainy conditions between HAPGS and radio relay stations. All calculations are done by using Matlab following the ITU-R recommendations. The results show the interference to noise ratio caused at radio relay station from HAPGS decrease, when distance between HAPGS and radio relay stations increases. The minimum separation distance required to obtain an optimum interference is shown for various azimuth angles in clear sky and rainy conditions. 
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