基于中断概率的协作通信系统功率分配研究  

Research on power allocation of cooperative communication system based on outage probability

作　　者：崔永青 叶晓宇 CUI Yongqing;YE Xiaoyu(Baoji Vocational and Technology College,Shaanxi Baoji 721013,China;The First Military Representative of Baoji,Shaanxi Baoji 721000,China)

机构地区：[1]宝鸡职业技术学院,陕西宝鸡721013 [2]驻宝鸡地区第一军事代表室,陕西宝鸡721000

出　　处：《长江信息通信》2023年第3期185-188,共4页Changjiang Information & Communications

基　　金：陕西省教育厅2022年度一般专项科研计划项目(自然科学项目)(22JK0252)。

摘　　要：在协作通信中,由于移动终端的资源有限,而转发数据又需要消耗自身资源。采用合适的功率分配策略能够最大化系统资源的利用率,提高信号的传输效率和可靠性,从而保证通信的质量。文章研究放大转发协议下以最小化中断概率为目标的机会中继系统的功率分配策略。分别采用三种方法得到最佳功率分配因子,并对三种方法以及等功率分配方案的性能进行仿真分析。结果表明迭代法与理想功率分配方案的性能是最接近的,并且这种方法的迭代次数可以根据实际应用场景动态调整。In cooperative communication,due to the limited resources of mobile terminals,moreover forwarding data needs to consume its own resources.Adopting appropriate power allocation strategy can maximize the utilization of system resources,improve signal transmission efficiency and reliability,and ensure the quality of communication.In this paper,we study the power allocation strategy of opportunistic relay system with the aim of minimizing the outage probability under the amplify and forward protocol.Three methods are used to obtain the optimal power allocation factor,and the performance of the three methods and equal power distribution scheme is simulated.The results show that the perfbmance of the iterative method is the closest to that of the ideal power allocation scheme,and the number of iterations of this method can be dynamically adjusted according to the actual application scenario.

关 键 词：无线通信 协作通信系统 功率分配 中断概率 信噪比 

分 类 号：TN914[电子电信—通信与信息系统]