[Ordonnanceur opportuniste à base de radio cognitive]
Dans les approches cognitives traditionnelles basées sur la recherche d'interférence, une bande de communication sur laquelle est détectée de l'interférence est éliminée sans prendre en compte les caractéristiques temporelles de cette dernière. L'objectif de ce papier est d'alerter la communauté scientifique sur l'intérêt de pendre en compte les caractéristiques temporelles de l'interférence. Ainsi le terminal à radio cognitive pourra gérer de façon opportuniste l'interférence présente dans les réseaux. Dans ce but, une modélisation mathématique du comportement temporel de l'interférence est réalisée lorsque ces signaux obéissent à une loi de distribution log-normale. Dans le cas particulier d'une microcellule (hot-spots) faisant partie d'une macro cellule et communicant toutes deux sur la même bande de fréquence, des paramètres clés tel que le débit sont déterminés.
Traditional cognitive approaches based on interference scanning discard a certain communication band once interference is detected, irrespective of the temporal characteristics of the interference. The aim of this article is to alert the community that interference exhibits temporal fluctuations, which can be exploited by a cognitive radio in an opportunistic manner. To this end, we present some mathematical approaches that describe the temporal behaviour of interference signals obeying a lognormal shadowing distribution. We derive some key quantities, such as throughput, for an example hierarchical cell structure configuration of a microcell hotspot being operated within a macrocell using the same frequency band.
Mot clés : Radio opportuniste, Radio cognitive, Structure hiérarchique, CDMA, Débit
@article{CRPHYS_2006__7_7_805_0,
author = {Mischa Dohler and Seyed A. Ghorashi and Mohamed Ghozzi and Marylin Arndt and Fatin Said and A. Hamid Aghvami},
title = {Opportunistic scheduling using cognitive radio},
journal = {Comptes Rendus. Physique},
pages = {805--815},
publisher = {Elsevier},
volume = {7},
number = {7},
year = {2006},
doi = {10.1016/j.crhy.2006.07.004},
language = {en},
}
TY - JOUR AU - Mischa Dohler AU - Seyed A. Ghorashi AU - Mohamed Ghozzi AU - Marylin Arndt AU - Fatin Said AU - A. Hamid Aghvami TI - Opportunistic scheduling using cognitive radio JO - Comptes Rendus. Physique PY - 2006 SP - 805 EP - 815 VL - 7 IS - 7 PB - Elsevier DO - 10.1016/j.crhy.2006.07.004 LA - en ID - CRPHYS_2006__7_7_805_0 ER -
%0 Journal Article %A Mischa Dohler %A Seyed A. Ghorashi %A Mohamed Ghozzi %A Marylin Arndt %A Fatin Said %A A. Hamid Aghvami %T Opportunistic scheduling using cognitive radio %J Comptes Rendus. Physique %D 2006 %P 805-815 %V 7 %N 7 %I Elsevier %R 10.1016/j.crhy.2006.07.004 %G en %F CRPHYS_2006__7_7_805_0
Mischa Dohler; Seyed A. Ghorashi; Mohamed Ghozzi; Marylin Arndt; Fatin Said; A. Hamid Aghvami. Opportunistic scheduling using cognitive radio. Comptes Rendus. Physique, Volume 7 (2006) no. 7, pp. 805-815. doi : 10.1016/j.crhy.2006.07.004. https://comptes-rendus.academie-sciences.fr/physique/articles/10.1016/j.crhy.2006.07.004/
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⁎ This work was partially supported by the EPSRC under grant GR/S62017/01.
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