博弈论下基于串行干扰消除的功率控制算法  

Power Control Algorithm Based on Serial Interference Cancellation in Game Theory

作　　者：于心远 李晖 张茜茜 徐文校 杨山山 徐永杰 YU Xinyuan;LI Hui;ZHANG Xixi;XU Wenxiao;YANG Shanshan;XU Yongjie(College of Electronics and Information Engineering,Nanjing University of Information Science&Technology,Nanjing 210044;College of Electronics and Information Engineering,Wuxi University,Wuxi 214015)

机构地区：[1]南京信息工程大学电子与信息工程学院,南京210044 [2]无锡学院电子信息工程学院,无锡214105

出　　处：《计算机与数字工程》2024年第12期3485-3490,3502,共7页Computer & Digital Engineering

基　　金：国家自然科学基金项目(编号:61661018);江苏省基础研究计划青年基金项目(编号:BK20210064)资助。

摘　　要：为了提高认知无线网络中系统性能,满足主用户通信质量并降低次用户发射功率,论文提出一种基于非合作博弈、并利用基于非理想串行干扰消除算法的功率控制算法。首先,根据串行干扰消除算法和认知无线通信技术,结合信道状态,设计了新的效用函数;其次,针对该效用函数约束下的功率控制算法,证明其纳什均衡解的唯一性和可达性。通过仿真结果证明,该算法不仅能够快速收敛,还可以在满足次用户和主用户通信质量的前提下,降低次用户的发射功率,提高信干噪比。最后,仿真实验的数据对比表明,相较于其他三种算法,论文算法具有较好的抗背景噪声性能和较高的运算稳定性。In order to improve the system performance in cognitive wireless networks,meet the communication quality of pri-mary users and reduce the transmission power of secondary users,a power control algorithm based on non-cooperative game and non ideal serial interference cancellation algorithm is proposed in this paper.Firstly,a new utility function is designed according to the serial interference cancellation algorithm and cognitive wireless communication technology,combined with the channel state.Secondly,for the power control algorithm under the constraint of the utility function,the uniqueness and reachability of its Nash equilibrium solution are proved.The simulation results show that the algorithm can not only converge quickly,but also reduce the transmission power of secondary users and improve the signal to interference noise ratio on the premise of meeting the communica-tion quality of secondary users and primary users.Finally,the simulation results show that compared with the other three algo-rithms,the proposed algorithm has better anti background noise performance and higher operational stability.

关 键 词：认知无线网络 非合作博弈 纳什均衡 串行干扰消除 功率控制 

分 类 号：TN929.5[电子电信—通信与信息系统]