Spectrum etiquettes for terrestrial and high-altitude platform-based cognitive radio systems
Spectrum etiquettes for terrestrial and high-altitude platform-based cognitive radio systems
- Author(s): P. Likitthanasate ; D. Grace ; P.D. Mitchell
- DOI: 10.1049/iet-com:20070465
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- Author(s): P. Likitthanasate 1 ; D. Grace 1 ; P.D. Mitchell 1
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View affiliations
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Affiliations:
1: Communications Research Group, Department of Electronics, University of York, York, UK
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Affiliations:
1: Communications Research Group, Department of Electronics, University of York, York, UK
- Source:
Volume 2, Issue 6,
July 2008,
p.
846 – 855
DOI: 10.1049/iet-com:20070465 , Print ISSN 1751-8628, Online ISSN 1751-8636
Two spectrum etiquettes are developed for the use on the downlink of coexisting high-altitude platform (HAP) and terrestrial fixed broadband systems that are intended for future application with cognitive radio-based user terminals with directional antennas. The spectrum etiquettes are based on the interference to noise ratio and carrier to interference plus noise ratio levels at the receiver of an incumbent user. Antenna beamwidths and multiple modulation scheme levels determine the parameter settings for coexistence performance. It is shown that coexistence performance can be improved by exploiting the surplus transmitter power of the terrestrial system, thereby enabling the incumbent terrestrial system to accommodate additional interference arising from a newly activated HAP system.
Inspec keywords: radio spectrum management; directive antennas; broadband networks; cognitive radio; modulation
Other keywords:
Subjects: Radio links and equipment; Modulation and coding methods; Single antennas
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