IJSER Home >> Journal >> IJSER
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  
S.H.A.Al-Samhi, N.S.Rajbut
— High Altitude Platform Station, Network Architecture, Coverage of HAPS, Off Axis Angle, Elevation Angle, radio relay stations, Path loss.
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. 
[1] Ruiz.J.L and Zavala.A.A and Leon.B.B,” Co- channel interference for terrestrial and HAPS system in cellular structure “, robotics and automotive mechanics conference, IEEE, CERMA 2009/83, 2009.

[2] Yang and A. Mohammed,” Wireless communication from HAP: applications, deployment and development”, Blekinge institute of technology, karlskrona, SE3719, Sweden, 2011.

[3] Rec.ITU-RF.1500,”Preferred Characteristics of systems in the fixed service using High Altitude Platform Operating in the bands 47.2- 47.5GHZ and 47.9-48.2 GHz”, 2000.

[4] ITU-R F.1569, “Technical And Operational Characteristics For The Fixed Service Using High Altitude Platform Stations In The Bands 27.5-28.35 GHz And 31-31.3 GHz”, 2002.

[5] A. Mohammed and Z. Yang, “Broadband Communications and Applications from High Altitude Platforms” International Journal of Recent Trends in Engineering, Vol 1, May 2009.

[6] Awoniyi, Oluwaseyi Oluwadare, ”Stratospheric channel modelling”, Department of Electrical Engineering Blekinge Institute of Technology Karlskrona, Sweden ,May 2007.

[7] T.C.Tazer&D.Grace,”High- Alttitude platforms for wireless Communications”IEEE Electronics&Com.Eng.J,vol.13, pp.127-37, june2001.

[8] Vasilis F. Milas and Dr Philp Constantinou, “Interference Environment between High Altitude Platform Networks (HAPN), Geostationary (GEO) Satellite and Wireless Terrestrial Systems”, Wireless Personal Communications, Springer, PP257-274, 2005.

[9] Rec. ITU-R P.530-12, “Propagation data and prediction methods required for the design of terrestrial line-of-sight systems”, 2007.

[10] N.S.Rajput, K.Singh and S.H.A.AL.Samhi,”parametric mitigation of cochannel interference between HAP Ground station and FWA using neural networks “proc AIATA-2011, IT.BHU, 2011.

[11] S.H.A.Al-Samhi, N.S.Rajput,” Mitigation of Co-Channel Interference between High Altitude Platforms(HAP) ground stations and Fixed Wireless Access (FWA)Stations”, in Proc.ICCLSP- 2012,MERI,PP.71,January-2012.

[12] A. Widiawan and R. Tafazolli, "High Altitude Platform Station (HAPS): A Review of New Infrastructure Development for future Wireless Communications", Wireless Personal Communications, 42: 387-404,

[13] S.H.A.Al-Samhi, N.S.Rajput,” Interference Environments between High Altitude Platform Station and Fixed Wireless Access Stations”, IJERA, Vol.2.pp. 1508-1513, Mar-Apr, 2012.

[14] Rec. ITU-R F.1609-1, “Interference evaluation from fixed service systems using high altitude platform stations to conventional fixed service systems in the bands 27.5-28.35 GHz and 31-31.3 GHz”, 2006.

[15] ECC Report 156,”Condition for possible co-existence between HAPS and Gateway links and other services/systems in the 5850-7075 MHz band” , Cardiff, January 2011.

Untitled Page