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Content Provider | IET Digital Library |
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Author | Karasuwa, Abdulkareem Sarki Eastment, Jon D. Otung, Ifiok E. |
Abstract | 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. |
Starting Page | 162 |
Ending Page | 170 |
Page Count | 9 |
Volume Number | 2016 |
e-ISSN | 20513305 |
Issue Number | Issue 6, Jun (2016) |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/joe/2016/6 |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/joe.2015.0178 |
Journal | The Journal of Engineering |
Publisher | The Institution of Engineering and Technology |
Publisher Date | 2016-01-13 |
Access Restriction | Open |
Rights License | Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/) |
Subject Keyword | Allocated Radio Spectrum Carrier-to-noise-plus-interference Ratio CNIR Co-channel Cross-polar Signal Cochannel Interference Cross-polarisation Discrimination-induced Interference Depolarisation-induced Interference Dual Orthogonal Polarisation Mode Dual-polarised Satellite Communication System Electromagnetic Compatibility Electromagnetic Wave Polarisation Electromagnetic Wave Propagation High-capacity Satellite Communication System High-speed Internet Access Hydrometeor-induced DePolarisation Interference Ka-band Frequency Link Performance Multimedia Communication Multiple Spot Beam Radio Spectrum Management Satellite Communication System Satellite Link Temperate Climatic Region Tropical Climatic Region Ubiquitous Broadband Multimedia Communication |
Content Type | Text |
Resource Type | Article |
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