DocumentCode :
3079155
Title :
Dynamic Channel Aggregation Strategies in Cognitive Radio Networks with Spectrum Adaptation
Author :
Jiao, Lei ; Li, Frank Y. ; Pla, Vicent
Author_Institution :
Dept. of Inf. & Commun. Technol., Univ. of Agder (UiA), Grimstad, Norway
fYear :
2011
fDate :
5-9 Dec. 2011
Firstpage :
1
Lastpage :
6
Abstract :
In cognitive radio networks, channel aggregation techniques which combine several channels together as one channel have been proposed in many MAC protocols. In this paper, spectrum adaptation is proposed in channel aggregation and two strategies which dynamically adjust channel occupancy of ongoing traffic flows are further developed. The performance of these strategies is evaluated using continuous time Markov chain models. Moreover, models in the quasi-stationary regime are analyzed and the closed-form capacity expression is derived in this regime. Numerical results demonstrate that the capacity of the secondary network can be improved by using channel aggregation with spectrum adaptation.
Keywords :
Markov processes; access protocols; cognitive radio; telecommunication traffic; MAC protocols; channel occupancy; closed-form capacity expression; cognitive radio networks; continuous time Markov chain models; dynamic channel aggregation; spectrum adaptation; traffic flows; Adaptation models; Aggregates; Doped fiber amplifiers; Lead; Mathematical model; Numerical models; Upper bound;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Global Telecommunications Conference (GLOBECOM 2011), 2011 IEEE
Conference_Location :
Houston, TX, USA
ISSN :
1930-529X
Print_ISBN :
978-1-4244-9266-4
Electronic_ISBN :
1930-529X
Type :
conf
DOI :
10.1109/GLOCOM.2011.6134108
Filename :
6134108
Link To Document :
بازگشت