Optimized secondary user selection for quality of service enhancement of Two-Tier multi-user Cognitive Radio Network: A game theoretic approach

2017 ◽  
Vol 123 ◽  
pp. 1-18 ◽  
Author(s):  
Asmita Roy ◽  
Sadip Midya ◽  
Koushik Majumder ◽  
Santanu Phadikar ◽  
Anurag Dasgupta
Keyword(s):  
Cognitive Radio ◽  
Cognitive Radio Network ◽  
Theoretic Approach ◽  
User Selection ◽  
Radio Network ◽  
Game Theoretic ◽  
Selection For ◽  
Secondary User Selection ◽  
Game Theoretic Approach

scholarly journals A game theoretic power control and spectrum sharing approach using cost dominance in cognitive radio networks

2021 ◽  
Vol 7 ◽  
pp. e617
Author(s):  
Sundus Naseer ◽  
Qurratul-Ain Minhas ◽  
Khalid Saleem ◽  
Ghazanfar Farooq Siddiqui ◽  
Naeem Bhatti ◽  
...  
Keyword(s):  
Cognitive Radio ◽  
Spectrum Sharing ◽  
Theoretic Approach ◽  
Global Function ◽  
Available Bandwidth ◽  
Game Theoretic ◽  
The Cost ◽  
Efficient Power ◽  
Game Theoretic Approach

The wireless networks face challenges in efficient utilization of bandwidth due to paucity of resources and lack of central management, which may result in undesired congestion. The cognitive radio (CR) paradigm can bring efficiency, better utilization of bandwidth, and appropriate management of limited resources. While the CR paradigm is an attractive choice, the CRs selfishly compete to acquire and utilize available bandwidth that may ultimately result in inappropriate power levels, causing degradation in network’s Quality of Service (QoS). A cooperative game theoretic approach can ease the problem of spectrum sharing and power utilization in a hostile and selfish environment. We focus on the challenge of congestion control that results in inadequate and uncontrolled access of channels and utilization of resources. The Nash equilibrium (NE) of a cooperative congestion game is examined by considering the cost basis, which is embedded in the utility function. The proposed algorithm inhibits the utility, which leads to the decrease in aggregate cost and global function maximization. The cost dominance is a pivotal agent for cooperation in CRs that results in efficient power allocation. Simulation results show reduction in power utilization due to improved management in cognitive radio resource allocation.

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