Title :
Power Control Algorithm Based on SNR Cost Function in Cognitive Radio System
Author :
Zu Yun-Xiao ; Liu Yi-Fei ; Mao Shi-Bo ; Jia Yue
Author_Institution :
Sch. of Electron. Eng., Beijing Univ. of Posts & Telecommun., Beijing, China
Abstract :
The power control problem in the cognitive radio system is studied in this paper with game theory. A cost function based on fairness is designed, a power control algorithm based on SNR cost function is proposed, and a Non-cooperative Power control Game via Fairness Pricing(NPGFP) algorithm is developed. The algorithm proposed in this paper-NPGFP algorithm uses the complete information game method to make each cognitive user dynamically adjust its power parameters by detecting the power and location parameters of other cognitive users and the primary users. The algorithm ensures the system convergence stability and the benefit maximization of each cognitive user by making the transmit power to reach a steady state with iteration. By simulation in three different scenes it is shown that NPGFP algorithm is better than NPGP(Non-cooperative Power control Game model based on Pricing) algorithm in throughput, SNR, cost function of the cognitive user and the stability of the algorithm convergence.
Keywords :
cognitive radio; game theory; iterative methods; power control; signal detection; telecommunication control; NPGFP algorithm; NPGP algorithm; SNR cost function; benefit maximization; cognitive radio system; cognitive user; game theory; iterative method; location parameter detection; noncooperative power control game model-based-on-pricing algorithm; noncooperative power control game via fairness pricing algorithm; power control algorithm; power parameter detection; primary users; system convergence stability; Algorithm design and analysis; Cognitive radio; Cost function; Games; Power control; Signal to noise ratio; Throughput; SNR; cognitive radio; cost function; game theory; power control;
Conference_Titel :
Parallel and Distributed Systems (ICPADS), 2012 IEEE 18th International Conference on
Conference_Location :
Singapore
Print_ISBN :
978-1-4673-4565-1
Electronic_ISBN :
1521-9097
DOI :
10.1109/ICPADS.2012.150