NDLI: Channel assignment based on bee algorithms in multi-hop cognitive radio networks

Content Provider	IET Digital Library
Author	Ghasemi, Ahmad Shirazi, Mohammad Ali Masnadi Biguesh, M. Qassemi, Foad
Abstract	Spectrum management policies are responsible for poor utilisation of the radio spectrum. By carrying out dynamic spectrum management (DSM), cognitive radio (CR) can increase the radio spectrum in wireless systems efficiently. CR technology accounts for the improvement in the spectrum utilisation significantly. One issue of DSM in CR is the assignment of frequency channels among its users. Herein, a general model and four utility functions for optimal channel assignment in open spectrum systems such as CR networks have been defined. First, a new utility function with a better fairness than the other functions is proposed. Then, two new different channel assignment methods, based on the artificial bee colony (ABC) and bee swarm optimisation (BSO) algorithms, are proposed, whereas other certain evolutionary algorithms and colour sensitive graph colouring (CSGC) are used to compare the performances. In order to decrease the search space, based on the channel availability and interference constraints a mapping process between the channel assignment matrix and the position of the bees has been proposed. Our simulation results, compared to the optimal solutions, show that our algorithms drastically improve network performance by reducing interference.
Starting Page	2356
Ending Page	2365
Page Count	10
ISSN	17518628
Volume Number	8
e-ISSN	17518636
Issue Number	Issue 13, Sep (2014)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-com/8/13
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-com.2013.0910
Journal	IET Communications
Publisher Date	2014-07-21
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	ABC Algorithm Algebra Artificial Bee Colony Algorithm Bee Swarm Optimisation Algorithm BSO Algorithm Channel Allocation Channel Assignment Matrix Channel Availability Cognitive Radio Colour Sensitive Graph Colouring CSGC DSM Dynamic Spectrum Management Evolutionary Algorithm Evolutionary Computation Interference Constraint Matrix Algebra Multihop Cognitive Radio Network Open Spectrum System Optimisation Technique Radio Link And Equipment Spectrum Management Policy Spectrum Utilisation
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Science Applications

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