Adapative Resource Allocation for Downlink OFDMA Networks Using Cooperative Game Theory
This paper proposes a cooperative game theoretic resource allocation scheme for downlink OFDMA wireless networks. We define a user’s payoff as a function of his data throughput. Then the source allocation can be modeled as a cooperative game to maximize the aggregate payoff of the users. To achieve the Nash bargaining solution (NBS) of the game, a suboptimal subcarrier allocation is first performed by assuming an equal power allocation. An optimal power allocation algorithm then maximizes the sum payoff while ensuring QoS demand (the minimum data throughputs) of the users. Through comparing with the other two resource allocation algorithms, i.e., the maximizing system capacity and the max-min fairness algorithm, simulation results show that the cooperative game acquired a good tradeoff between the fairness and the overall system capacity. The user’s QoS demand is ensured, and the system resource is utilized efficiently.
OFDMA resource allocation cooperative game Nash bargaining solution QoS
Guopeng Zhang Hailin Zhang
State Key Laboratory of Integrated Services Networks Xidian University Xian,Shaanxi,710071,China
国际会议
广州
英文
2008-11-19（万方平台首次上网日期，不代表论文的发表时间）