A spectrum allocation algorithm to maximize the system access amount in cognitive radio system

Author

Jia, Jie ; Wang, Chuang ; Zhang, Zhaoyang ; Shi, Daming ; Li, Yanyan

Author_Institution

Coll. of Inf. Sci. & Eng., Northeastern Univ., Shenyang, China

fYear

2011

fDate

27-29 May 2011

Firstpage

251

Lastpage

255

Abstract

The existing spectrum allocation algorithms do not consider the starvation phenomenon of cognitive users seriously in cognitive radio wireless networks. For this reason, a maximum system access algorithm based on graph coloring model is proposed. Aiming at maximizing the system access, it assures the validity by means of designing corresponding schemes of selecting cognitive users and channels. Comparisons are made with coordinated maximal system bandwidth (CMSB) algorithm and minimum graph coloring algorithm. Numerical results show that the proposed algorithm can achieve a good tradeoff between throughput and fairness while ensuring interference-free transmission.

Keywords

cognitive radio; frequency allocation; graph colouring; cognitive radio system; cognitive users; coordinated maximal system bandwidth algorithm; graph coloring model; interference-free transmission; maximum system access algorithm; spectrum allocation algorithm; starvation phenomenon; system access amount; Algorithm design and analysis; Bandwidth; Cognitive radio; Interference; Resource management; Topology; Wireless networks; cognitive radio; graph theory; spectrum allocation; system access amount;

fLanguage

English

Publisher

ieee

Conference_Titel

Communication Software and Networks (ICCSN), 2011 IEEE 3rd International Conference on

Conference_Location

Xi´an

Print_ISBN

978-1-61284-485-5

Type

conf

DOI

10.1109/ICCSN.2011.6013586

Filename

6013586