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2017 | OriginalPaper | Buchkapitel

Cognitive Interference Management Techniques for the Spectral Co-existence of GSO and NGSO Satellites

verfasst von : Ameneh Pourmoghadas, Shree Krishna Sharma, Symeon Chatzinotas, Björn Ottersten

Erschienen in: Wireless and Satellite Systems

Verlag: Springer International Publishing

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Abstract

One of the main challenges in the co-existence of geostationary satellite orbit (GSO) and non-geostationary satellite orbit (NGSO) satellite networks is to mitigate the in-line interference caused by an NGSO satellite to the GSO earth terminal, while the NGSO satellite is crossing the GSO satellite’s illumination zone. The method recommended in ITU-R S.1325-3 involves utilizing a range-based power control on the NGSO satellite for downlink communication to the NGSO earth terminals. In this paper, we investigate a cognitive range-based power control algorithm while taking into account the imposed interference level to the GSO fixed satellite service (FSS) system. Results show that the proposed cognitive power control algorithm can mitigate the harmful in-line interference on the GSO terminal receiver, while also providing the desired link quality for the NGSO system. More importantly, we formulate and solve an optimization problem with the objective of minimizing the inter-site distance (ISD) of the GSO-NGSO earth user-terminals. Finally, we develop an analytical method to calculate the ISD between GSO and NGSO earth terminals and validate this with the help of simulation results.

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Throughout this article, the interference in downlink refers to the user-link interference.

In this technique we have assumed that \(I_{th}\) level at the victim GSO earth termianl is known in public domain.

Note that in our numerical calculation, we have used the effective isotropically radiated power (EIRP) of the NGSO satellite, which is calculated as \(EIRP\,[\mathrm{dBW}]=10\times (\log _{10}Ptx_{max} [\mathrm{W}]+\log _{10}Gtx_{sn}(0))\).

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Titel: Cognitive Interference Management Techniques for the Spectral Co-existence of GSO and NGSO Satellites
verfasst von: Ameneh Pourmoghadas
Shree Krishna Sharma
Symeon Chatzinotas
Björn Ottersten
Verlag: Springer International Publishing
Buch: Wireless and Satellite Systems
Print ISBN: 978-3-319-53849-5

Electronic ISBN: 978-3-319-53850-1

Copyright-Jahr: 2017
DOI: https://doi.org/10.1007/978-3-319-53850-1_18

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