Resource Allocation for Cognitive Satellite Uplink and Fixed-Service Terrestrial Coexistence in Ka-Band

Lagunas, Eva; Sharma, Shree Krishna; Maleki, Sina; Chatzinotas, Symeon; Grotz, Joël; Krause, Jens; Ottersten, Björn

doi:10.1007/978-3-319-24540-9_40

Cited by 8 publications

(18 citation statements)

References 10 publications

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“…In this section, we first review the power allocation algorithm presented by the authors in [23]. In [23], a noniterative, simple and conservative technique that assumes perfect knowledge of cross-channel gains at the FSS system is proposed and it is shown to guarantee that the cognitive system never exceeds the prescribed interference threshold.…”

Section: Power Allocation Techniquesmentioning

confidence: 99%

“…In [23], a noniterative, simple and conservative technique that assumes perfect knowledge of cross-channel gains at the FSS system is proposed and it is shown to guarantee that the cognitive system never exceeds the prescribed interference threshold. Subsequently, we take the algorithm introduced in [14], [15] for TAS licensed and we performe slight adaptations for the scenario being considered in this paper.…”

Section: Power Allocation Techniquesmentioning

confidence: 99%

“…Subsequently, we take the algorithm introduced in [14], [15] for TAS licensed and we performe slight adaptations for the scenario being considered in this paper. The latter, however, assumes the same side information as in [23]. Finally, a third technique is presented which works under the premise that the FS station is able to transmit 1-bit feedback indicating if the interference threshold has been exceeded or not.…”

Section: Power Allocation Techniquesmentioning

confidence: 99%

“…The Worst-Case Power Allocation (WCPA) approach identifies the worst FS link per FSS terminal in terms of interference and divides the amount of tolerable interference among the total number of FSS terminals K. This requires complete acknowledge of cross channel link gains which can be obtained with a FS database and proper propagation modeling [23]. The identification of the worst FS station in terms of interference consists in determining the one with maximum cross-channel gain,…”

Section: A Worst-case Power Allocationmentioning

confidence: 99%

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Power Control for Satellite Uplink and Terrestrial Fixed-Service Co-Existence in Ka-Band

Lagunas

Sharma

Maleki

et al. 2015

2015 IEEE 82nd Vehicular Technology Conference (VTC2015-Fall)

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Abstract-A fundamental problem facing the next generation of Satellite Communications (SatComs) is the spectrum congestion and how the scarce spectral resources are allocated to meet the demand for higher rate and reliable broadband communications. In this context, this paper addresses the satellite uplink where satellite terminals reuse frequency bands of FixedService (FS) terrestrial microwave links which are the incumbent users in the Ka band. In this scenario, the transmit power of the satellite terminals has to be controlled such that the aggregated interference caused at the FS system is kept below some acceptable threshold. In this paper, we review simple and efficient power allocation techniques available in the literature and, with slight adaptations, we evaluate them to the proposed satellite uplink and terrestrial FS co-existence scenario. The presented numerical results highlight the tradeoff between the level of channel state information and the rates that can be achieved at the satellite network.

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Section: Power Allocation Techniquesmentioning

confidence: 99%

Section: Power Allocation Techniquesmentioning

confidence: 99%

Section: Power Allocation Techniquesmentioning

confidence: 99%

Section: A Worst-case Power Allocationmentioning

confidence: 99%

See 2 more Smart Citations

Power Control for Satellite Uplink and Terrestrial Fixed-Service Co-Existence in Ka-Band

Lagunas

Sharma

Maleki

et al. 2015

2015 IEEE 82nd Vehicular Technology Conference (VTC2015-Fall)

Self Cite

View full text Add to dashboard Cite

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“…What is most important is that using the proposed CA and BF we can achieve similar average throughput as if there were no FS system. The applicability of resource allocation techniques in Scenario C was discussed in [31]. Here, we summarize the results obtained for Scenario C in Finland, from which a reliable FS Database obtained from the national regulator is used.…”

Section: Resource Allocationmentioning

confidence: 99%

Extending the Usable Ka Band Spectrum for Satellite Communications: The CoRaSat Project

Evans

Thompson

Lagunas

et al. 2015

Wireless and Satellite Systems

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Abstract. Broadband access by satellite in Ka band will become constrained by spectrum availability. In this context, the EU FP7 project CoRaSat is examining the possible spectrum extension opportunities that could be exploited by a database or sensing approach in Ka band via the use of cognitive mechanisms. The database/sensing approach utilises spectrum sharing scenarios between Fixed Satellite Services (FSS), Fixed Services (FS) and Broadcast Satellite Service (BSS) feeder links are considered. Data bases and spectrum sensing have been evaluated to determine white spaces across the shared spectrum for several EU countries. Resource allocation schemes are investigated to place the carriers in the white spaces so as to maximize the throughput of the system. A multibeam satellite system model has been used to demonstrate the capacity gains that can be achieved by using the cognitive schemes. The overall system is being demonstrated in a laboratory trial.

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Cognitive approaches to enhance spectrum availability for satellite systems

Chatzinotas

Evans

Guidotti

et al. 2016

Satell Commun Network

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Summary Cognitive radio technologies have achieved in the recent years an increasing interest for the possible gain in terms of spectrum usage with respect to unshared approaches. While most of the attention has been devoted to the cognitive coexistence between terrestrial systems, the coexistence between terrestrial and satellite communications is also seen as a viable option. Cognitive radio for satellite communications (CoRaSat) has been a European Commission seventh Framework Program project funded under the ICT Call 8. CoRaSat aimed at investigating, developing, and demonstrating cognitive radio techniques in satellite communication systems for flexible and dynamic spectrum access. In this paper, the CoRaSat cognitive approaches and techniques, investigated, developed, and demonstrated as most relevant to satellite communications, are described. In particular, the focus is on spectrum awareness, that is, database and spectrum sensing approaches, and on spectrum exploitation algorithms, that is, resource allocation and beamforming algorithms, to enable the use of spectrum for satellite communications using shared bands. Copyright © 2016 John Wiley & Sons, Ltd.

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Resource Allocation for Cognitive Satellite Uplink and Fixed-Service Terrestrial Coexistence in Ka-Band

Cited by 8 publications

References 10 publications

Power Control for Satellite Uplink and Terrestrial Fixed-Service Co-Existence in Ka-Band

Power Control for Satellite Uplink and Terrestrial Fixed-Service Co-Existence in Ka-Band

Extending the Usable Ka Band Spectrum for Satellite Communications: The CoRaSat Project

Cognitive approaches to enhance spectrum availability for satellite systems

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