CAJ | 학술논문

该文针对认知无线电系统动态性的特点,将微分博弈理论应用在认知无线电系统的功率控制中,建立了功率控制的非合作微分博弈模型,提出了一种基于微分博弈的分布式非合作功率控制算法.该算法在满足认知用户平均功率门限和QoS需求的基础上,实现了分布式动态功率控制,获得了反馈纳什均衡解析解.仿真结果表明,该算法可有效控制各认知用户的发射功率,增加系统吞吐量,提高系统性能.
해문침대인지무선전계통동태성적특점,장미분박혁이론응용재인지무선전계통적공솔공제중,건립료공솔공제적비합작미분박혁모형,제출료일충기우미분박혁적분포식비합작공솔공제산법.해산법재만족인지용호평균공솔문한화QoS수구적기출상,실현료분포식동태공솔공제,획득료반궤납십균형해석해.방진결과표명,해산법가유효공제각인지용호적발사공솔,증가계통탄토량,제고계통성능.
Considering the dynamic nature in Cognitive Radio (CR) system, differential game theory is adopted in power control for CR system and a novel model of noncooperative differential game for power control is presented. Then a distributed noncooperative power control algorithm based on differential game is proposed in this paper. The proposed algorithm achieves the distributed dynamic power control under the condition that the requirements, including the average power threshold and QoS of secondary users, are guaranteed. Furthermore, an analytical solution to feedback Nash equilibrium is obtained. Simulation results show that the proposed algorithm can regulate the transmitted power of secondary users effectively to enhance the total throughput, and the performance of CR system is thereby improved.