DocumentCode :
1925549
Title :
Multichannel Cognitive MAC Protocol for Efficient Utilization of Wireless Spectrum
Author :
Khan, Salman ; Khan, Ali Nawaz ; Akhtar, Saleem
Author_Institution :
Dept. of Electr. Eng., COMSAT S Inst. of Inf. Technol., Lahore, Pakistan
fYear :
2011
fDate :
18-20 April 2011
Firstpage :
286
Lastpage :
289
Abstract :
Rapid development of wireless technologies and services are increasing the demand of limited wireless spectrum. Fixed spectrum has been allocated to each application. Recent analysis shows that this scarce spectrum is not being utilized efficiently. Cognitive Radio (CR) is the developing solution of efficient spectrum utilization. Cognitive Radio is well aware of its environment and accesses the spectrum opportunistically. In this paper, we propose an efficient multichannel cognitive MAC protocol that learns the behavior of primary users on each channel and allows the secondary users to occupy the unused spectrum without any harmful interference with the primary user and with other secondary users. By using the probabilistic model, CR estimates each available channel and selects the best one for transmission. An OPNET 14 simulation scenario of coexistence of CR nodes and primary nodes of a wireless network is developed to evaluate its performance.
Keywords :
access protocols; cognitive radio; interference suppression; probability; radio networks; radiofrequency interference; wireless channels; OPNET 14 simulation; cognitive radio; multichannel cognitive MAC protocol; probabilistic model; wireless network; wireless spectrum efficient utilization; Cognitive radio; Media Access Protocol; Receivers; Throughput; Wireless sensor networks; Cognitive radios; MAC protocols; resource management; utilization; wireless spectrum sensing;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Communications and Mobile Computing (CMC), 2011 Third International Conference on
Conference_Location :
Qingdao
Print_ISBN :
978-1-61284-312-4
Type :
conf
DOI :
10.1109/CMC.2011.124
Filename :
5931251
Link To Document :
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