Rahman, Md. Arafatur (2013) Cognitive Radio Ad-hoc Networks: A Routing Perspective. [Tesi di dottorato]

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Item Type:	Tesi di dottorato
Resource language:	English
Title:	Cognitive Radio Ad-hoc Networks: A Routing Perspective
Creators:	Creators Email Rahman, Md. Arafatur arafatur.rahman@unina.it
Date:	23 April 2013
Number of Pages:	116
Institution:	Università degli Studi di Napoli Federico II
Department:	Ingegneria biomedica, elettronica e delle telecomunicazioni
Scuola di dottorato:	Ingegneria dell'informazione
Dottorato:	Ingegneria elettronica e delle telecomunicazioni
Ciclo di dottorato:	25
Coordinatore del Corso di dottorato:	nome email Rinaldi, Niccolò nirinald@unina.it
Tutor:	nome email Paura, Luigi paura@unina.it
Date:	23 April 2013
Number of Pages:	116
Keywords:	Cognitive Radio, Routing, Diversity, Channel Availability Probability and PU mobility
Settori scientifico-disciplinari del MIUR:	Area 09 - Ingegneria industriale e dell'informazione > ING-INF/03 - Telecomunicazioni
Date Deposited:	09 Apr 2013 11:35
Last Modified:	20 Oct 2014 10:38
URI:	http://www.fedoa.unina.it/id/eprint/9348
DOI:	10.6092/UNINA/FEDOA/9348

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Cognitive radio is considered the enabling technology of the dynamic spectrum access paradigm which is envisaged to solve the spectrum scarcity problem, thus facilitating the accommodation of new wireless services as well as providing an effective solution to the ever increasing user demand. It allows the unlicensed users to utilize dynamically and opportunistically the spectrum assigned to the primary users, when it is temporarily not used. To reach this aim, unlicensed users must be able to change their transmission and reception parameters to communicate with each other without causing interference to the primary users. The main objective of this thesis is to address the routing problem under the challenging scenario characterized by the uncertain availability of the spectral resource. The routing problem is furthermore challenging in presence of primary user’s mobility. To deal with this scenario, we proposed to utilize jointly path and spectrum diversity in routing to assure an improved spectral efficiency. We also proposed a mobility-aware channel-availability based channel selection technique, which performs the best channel selection in terms of spectrum availability in presence of primary user’s mobility. Performance evaluation is conducted through simulations, and the simulation results reveal the benefits of introducing the proposed proposals.

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