Ben Mabrouk, Ismail
Caractérisation d’un Canal Minier Souterrain Utilisant les Techniques MIMO.
Gatineau, Université du Québec en Outaouais, Département d'informatique et d'ingénierie, 104 p.
After a recent series of unfortunate underground mining disasters, the vital importance of communications for underground mining is underlined one more time. Establishing reliable communications is a very difficult task for underground mining due to the extreme environmental conditions. Until now, no single communication system exists which can solve all of the problems and difficulties encountered in underground mine communications. Moreover, the wireless communication systems used on surface cannot be applied straightaway in underground mines due to the complex geological structures, non-symmetric mine topology, uneven mine structure, and extensive labyrinths. Therefore, wireless communication in underground mine is a very complex technique.
In fact, our research in this thesis consists of several investigations on Multiple-Input Multiple-Output (MIMO) wireless channels, characterized by multiple antenna elements at the transmitter and receiver, which have shown astonishing increase in spectral efficiency and significant improvement in link reliability in rich multipath environments.
Paper I focus on the medium-range wireless communication technologies such as WLANs at 2.4 GHz in the context of MIMO systems. Based on extensive channel measurements, the impact of MIMO antenna directivity on propagation channel performance is analysed in details.
Paper II and III investigate the feasibility and promise of MIMO techniques for two candidate schemes for short-range wireless communication and future high-performance wireless technologies, namely UWB and 60 GHz systems.
For our candidate communication schemes, some relevant channel parameters such as channel capacity, correlation, K-factor, path loss, channel coherence bandwidth are investigated. Accordingly, practical system designs for future wireless systems in underground mines based on MIMO techniques are recommanded.
|Type de document:
|Directeur de mémoire/thèse:
||Talbi, Larbi et Nedil, Mourad
||Localisation : Bibliothèque L.-Brault TK 5103 .4836 B46 2012.
Le texte est en anglais.
||Systèmes à entrées multiples et à sorties multiples; Mines; Systèmes de communication
|Départements et école, unités de recherche et services:
||Informatique et ingénierie
|Date de dépôt:
||22 mai 2015 13:47
||04 nov. 2016 16:51
Actions (Identification requise)
||Dernière vérification avant le dépôt