Title :
Energy-efficient power control and subcarrier allocation in OFDMA systems based on game theory
Author :
Tong Yan ; Ma Yayan ; Wang Baoyun
Author_Institution :
Coll. of Commun. & Inf., Nanjing Univ. of Posts & Telecommun., Nanjing, China
Abstract :
This paper considers the problem of noncooperative resource allocation in orthogonal frequency division multiple access (OFDMA) systems. In order to maximize the energy efficiency, a distributed and iterative algorithm that the energy efficiency changed dynamically according to the strategies is proposed. In the proposed game, we study the subcarrier and transmit power allocation and each user chooses the strategy to selfishly maximize its own energy efficiency. Nash equilibrium point is achieved through the algorithm. As shown in the numerical results, our algorithm performs better than the compared algorithms in the whole system, which can reduce the power consumption at the same time.
Keywords :
OFDM modulation; frequency division multiple access; game theory; iterative methods; resource allocation; Nash equilibrium point; OFDMA systems; distributed algorithm; energy efficient power control; game theory; iterative algorithm; noncooperative resource allocation; subcarrier power allocation; transmit power allocation; Algorithm design and analysis; Resource management; Energy Efficiency; Nash equilibrium; orthogonal frequency division multiple access (OFDMA); power alloctation; subcarrier;
Conference_Titel :
High Mobility Wireless Communications (HMWC), 2014 International Workshop on
Conference_Location :
Beijing
DOI :
10.1109/HMWC.2014.7000228