This is an open access article published by the IET under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/)
The design of spectrally-efficient, high-throughput satellite (HTS) systems with capacity approaching one terabit per second requires operating at Ka-band frequencies and above, where there are several gigahertz of allocated radio spectrum, using multiple spot beams with dual orthogonal polarisation mode. At these high frequencies, rain attenuation poses a major obstacle to the design of high-availability satellite links which are needed for the realisation of ubiquitous broadband multimedia communication services including high-speed Internet access at rural and remote locations. Furthermore, depolarisation-induced interference in such systems could have a performance-limiting impact if a co-channel cross-polar signal combines with system noise to drive the carrier-to-noise-plus-interference ratio (CNIR) below an acceptable threshold. This paper employs real measurement data to investigate the impact of depolarisation-induced interference on dual-polarised HTS systems for temperate and tropical climatic regions. Scenarios that cause significant system performance degradation are analysed, including the effects of signal frequency, antenna size, and regional rainfall rate. The impact of depolarisation on system performance is quantified by the reductions in the CNIR and link availability of a dual-polarised system when compared with those of a similarly-dimensioned single-polarised system.
References
-
-
1)
-
11. Vasseur, H.: ‘Degradation of availability performance in dual-polarized satellite communications systems’, IEEE Trans. Commun., 2000, 48, (3), pp. 465–472 (doi: 10.1109/26.837049).
-
2)
-
7. Lutz, E.: ‘Achieving a terabit/s GEO satellite system’. 19th Ka and Broadband Communications, Navigation and Earth Observation Conf., Florence, Italy, 2013.
-
3)
-
3. Ippolito, L.J.: ‘Satellite communications systems engineering: atmospheric effects, satellite link design and system performance’ (John Wiley and Sons Ltd., Chicester, 2008, 1st edn.).
-
4)
-
14. Uggalla, L., Eastment, J., Otung, I.: ‘The Glamorgan satellite beacon monitoring station’. Sixth Faculty of Advanced Technology Research Student Workshop, Treforest, University of Glamorgan, 2011.
-
5)
-
16. Ghulam, A., Mohsin, S.A.: ‘Modern communication satellite antenna technology’, in Maurizio, S.A. (ED.): ‘Recent advances in technologies’ (InTech, Rijeka, 2009).
-
6)
-
18. Glover, I.A., Grant, P.M.: ‘Digital communications’ (Pearson Education Limited, Essex, 2004, 2nd edn.).
-
7)
-
8. Corbel, E., Peters, G., Sperber, R., et al: ‘TERASAT: high-throughput satellite system by 2020’. 19th Ka and Broadband Communications, Navigation and Earth Observation Conf., Florence, Italy, 2013.
-
8)
-
9. Thompson, P., Evans, B., Bousquet, M., Castenet, L., Mathiopoulos, T.: ‘Concepts and technologies for a terabit/s satellite: supporting future broadband services via satellite’. SPACOMM 2011: The Third Int. Conf. on Advances in Satellite and Space Communications, 2011.
-
9)
-
6. Fenech, H., Amos, S., Tomatis, A., et al: ‘High throughput satellites: an analytical approach’. 19th Ka and Broadband Communications, Navigation and Earth Observation Conf., Florence, Italy, 2013.
-
10)
-
10. Gayrard, J.D.: ‘Terabit satellite: myth or reality?’. First Int. Conf. on Advances in Satellite and Space Communications, 2009. SPACOMM 2009, 2009.
-
11)
-
1. Panagopoulos, A.D., Arapoglou, P.-D., Cottis, P.G.: ‘Satellite communications at Ku, Ka and V bands: propagation impairments and mitigation techniques’, IEEE Commun. Surv. Tutor., 2004, 6, (3), pp. 2–14 (doi: 10.1109/COMST.2004.5342290).
-
12)
-
17. Stutzman, W.L.: ‘Polarization in electromagnetic systems’ (Artech House, Inc., Norwood, 1993).
-
13)
-
13. ITU-R: ‘Recommendation ITU-R P.618-11: propagation data and prediction methods required for the design of Earth-space telecommunication systems’ (International Telecommunications Union, Geneva, 2013).
-
14)
-
1. Kyrgiazos, A., Evans, B., Thompson, P., et al: ‘A terabit/second satellite system for European broadband access: a feasibility study’, Int. J. Satell. Commun. Netw., 2014, 32, (2), pp. 63–92 (doi: 10.1002/sat.1067).
-
15)
-
5. Ozlem, K., Amir, I.Z.: ‘Interference in cellular satellite systems’ in (InTech, Rijeka, 2010).
-
16)
-
15. ITU-R: ‘Recommendation ITU-R P.676-9: attenuation by atmospheric gases’ (International Telecommunications Union, Geneva, 2012).
-
17)
-
4. Allnutt, J.E., Rogers, D.V.: ‘System implications of 14/11 GHz path depolarization. Part II: reducing the impairments’, Int. J. Satell. Commun., 1986, 4, (1), pp. 13–17 (doi: 10.1002/sat.4600040103).
-
18)
-
12. Allnutt, J.: ‘Satellite-to-ground radiowave propagation’ (The Institution of Engineering and Technology, London, 2011, 2nd edn.).
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