Jointly locating the primary and secondary users in cognitive radio networks

2017 ◽  
Author(s):  
Nasir Saeed ◽  
Muhammad Haris ◽  
Mian Imtiaz Ul Haq
Keyword(s):  
Cognitive Radio ◽  
Cognitive Radio Networks ◽  
Radio Networks ◽  
Secondary Users ◽  
Primary And Secondary Users

Operating point selection for primary and secondary users in cognitive radio networks

2009 ◽  
Vol 53 (8) ◽  
pp. 1158-1170 ◽  
Author(s):  
Xavier Gelabert ◽  
Ian F. Akyildiz ◽  
Oriol Sallent ◽  
Ramon Agustí
Keyword(s):  
Cognitive Radio ◽  
Cognitive Radio Networks ◽  
Radio Networks ◽  
Operating Point ◽  
Point Selection ◽  
Secondary Users ◽  
Selection For ◽  
Primary And Secondary Users

scholarly journals Game-Theoretic Channel Allocation in Cognitive Radio Networks

2017 ◽  
Vol 7 (2) ◽  
pp. 986
Author(s):  
Sangsoon Lim
Keyword(s):  
Cognitive Radio ◽  
Utility Function ◽  
Cognitive Radio Networks ◽  
Spectrum Sharing ◽  
Dynamic Spectrum Access ◽  
Channel Allocation ◽  
Radio Networks ◽  
Secondary Users ◽  
Game Theoretic ◽  
Primary And Secondary Users

Cognitive radio networks provide dynamic spectrum access techniques to support the increase in spectrum demand. In particular, the spectrum sharing among primary and secondary users can improve spectrum utilization in unused spectrum by primary users. In this paper, we propose a novel game theoretic channel allocation framework to maximize channel utilization in cognitive radio networks. We degisn the utility function based on the co-channel interference among primary and secondary users. In addition, we embed the property of the adjacent channel intererence to consider real wireless environment. The results show that the utility function converges quickly to Nash equilibrium and achieves channel gain by up to 25 dB compared to initial assignment.

scholarly journals A Real Time Estimation of QoS for GA and LOA Algorithm in Cognitive Radio Network

2019 ◽  
Vol 9 (2) ◽  
pp. 2655-2659
Keyword(s):  
Cognitive Radio ◽  
Cognitive Radio Networks ◽  
Time Estimation ◽  
Radio Networks ◽  
Secondary User ◽  
Alternative Methods ◽  
Secondary Users ◽  
Primary Users ◽  
Ga Algorithm ◽  
Primary And Secondary Users

Cognitive radio networks sets priority for users to provide improved QoS for primary users. In most cognitive radio networks the primary user is assigned highest priority for communication. This causes the secondary user to wait for communication. Hence, alternative methods employ for secondary user to make transmit data on channel reserved for primary users. The secondary users sense free channels by spectrum sensing mechanism. In this paper, Heuristic Greedy algorithm (GA) and Lion optimization algorithm (LOA) apply for efficient channel utilization to improve QoS. In GA algorithm, the spectrum is shared between primary and secondary users on a time basis. In LOA, the primary and secondary users share spectrum information with each other. The GA and LOA algorithm apply in hardware testbed to evaluate comparative QoS analysis in terms of power consumption, delay and bandwidth. The analysis show LOA algorithm provide better QoS compared to GA algorithm.

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