Int. J. of Wireless and Mobile Computing   »   2015 Vol.8, No.2

 

 

Title: A survey on spectrum management in cognitive radio networks

 

Authors: Zina Chkirbene; Noureddine Hamdi

 

Addresses:
LR-99-ES21 Laboratoire de Systèmes de Communications, Université de Tunis El Manar, Ecole Nationale d'Ingénieurs de Tunis, Tunis1002, Tunisia
LR-99-ES21 Laboratoire de Systèmes de Communications, Université de Tunis El Manar, Ecole Nationale d'Ingénieurs de Tunis, Tunis1002, Tunisia

 

Abstract: With the rapid development of wireless communication, the scarcity of spectrum becomes more and more prominent. Cognitive radio is proposed to overcome the problem of low spectrum utilisation by offering large bandwidth to mobile users via the dynamic spectrum access techniques and heterogeneous wireless architectures. In fact, it provides for users the ability to interact with the RF environment and perfectly adapt the transmission parameters. However, the CR networks must overcome some challenges such as the channel fluctuations, the available frequencies and the various QoS requirements of different applications. Spectrum management presents a promising solution for the realisation of these challenges. This paper surveys recent research advances linked to cognitive radios and open research issues in spectrum management. Existing works in the spectrum sensing, spectrum sharing and spectrum decision are reviewed and discussed in detail. For each issue, we highlight the key challenges of open research.

 

Keywords: spectrum management; cognitive radio networks; CRNs; primary user; secondary user; spectrum characterisation; spectrum sensing; spectrum sharing; spectrum decision; channel fluctuations; available frequencies; QoS; quality of service.

 

DOI: 10.1504/IJWMC.2015.068618

 

Int. J. of Wireless and Mobile Computing, 2015 Vol.8, No.2, pp.153 - 165

 

Date of acceptance: 30 Jun 2014
Available online: 23 Mar 2015

 

 

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