A4 Refereed article in a conference publication
Field measurements of WSD-DTT protection ratios over outdoor and indoor reference geometries
Authors: Talmola P, Kalliovaara J, Paavola J, Ekman R, Vainisto A, Aurala N, Kokkinen H, Heiska K, Wichman R, Poikonen J
Editors: IEEE
Publication year: 2012
Book title : Cognitive Radio Oriented Wireless Networks and Communications (CROWNCOM), 2012 7th International ICST Conference on
Journal name in source: 2012 7TH INTERNATIONAL ICST CONFERENCE ON COGNITIVE RADIO ORIENTED WIRELESS NETWORKS AND COMMUNICATIONS (CROWNCOM)
First page : 7
Last page: 12
Number of pages: 6
ISBN: 978-1-4673-2976-7
eISBN: 978-1-936968-55-8
ISSN: 2166-5370
DOI: https://doi.org/10.4108/icst.crowncom.2012.248442
Abstract
A currently prevalent view of the operation of white space cognitive radios is that they should use geolocation databases to determine their frequency band and maximum transmission power in any given location so that interference radiated to broadcast receivers is negligible. To estimate the level of such interference, physical reference geometries and path loss estimates have been proposed between co-located devices. In this paper we present results of a measurement campaign conducted over indoor and outdoor reference geometry scenarios in a digital terrestrial television test network. Applying a subjective error criterion, we provide practical estimates on the maximum relative transmit powers for white space devices in order to avoid visible interference in television reception. The study applies to various primary and secondary transmission and reception scenarios, and its results can be extended also to estimate protection ratios for signal configurations not considered in the reported measurements.
A currently prevalent view of the operation of white space cognitive radios is that they should use geolocation databases to determine their frequency band and maximum transmission power in any given location so that interference radiated to broadcast receivers is negligible. To estimate the level of such interference, physical reference geometries and path loss estimates have been proposed between co-located devices. In this paper we present results of a measurement campaign conducted over indoor and outdoor reference geometry scenarios in a digital terrestrial television test network. Applying a subjective error criterion, we provide practical estimates on the maximum relative transmit powers for white space devices in order to avoid visible interference in television reception. The study applies to various primary and secondary transmission and reception scenarios, and its results can be extended also to estimate protection ratios for signal configurations not considered in the reported measurements.
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