雷达通信一体化子载波和功率联合分配方法  

A Joint Allocation Method of Subcarrier and Power for Integration of Radar and Communication

作　　者：张子睿 张贞凯[1] ZHANG Zirui;ZHANG Zhenkai(Ocean College,Jiangsu University of Science and Technology,Zhenjiang 212028,China)

机构地区：[1]江苏科技大学海洋学院,江苏镇江212028

出　　处：《电讯技术》2023年第6期843-848,共6页Telecommunication Engineering

基　　金：国家自然科学基金资助项目(61871203);江苏省研究生科研与实践创新计划项目(KYCX22_3818)。

摘　　要：雷达通信一体化系统是缓解无线电频谱拥塞和频谱资源短缺的高效解决方案。在雷达的最小信号噪声比和最小通信传输速率的约束条件下,通过构建混合整数非线性优化模型,提出了子载波和功率联合分配方法,实现系统总发射功率的最小化。首先将优化模型转化为线性模型并添加罚因子,然后选择用于雷达或通信目的的子载波。考虑到雷达性能和通信性能评价标准的差异,对用于雷达或通信目的子载波设置不同的发射功率约束,最终通过循环优化实现子载波和功率的联合分配。数值仿真结果表明,所提方法显著节约了功率资源。The integration of radar and communication system is an efficient solution to alleviate the radio frequency spectrum congestion and the shortage of spectrum resources.Under the constraints of the minimum signal-to-noise ratio of the radar and minimum communication data rate,a joint allocation method of subcarriers and power is proposed to minimize the total transmission power of the system by constructing a mixed integer nonlinear optimization model.First,the optimization model is transformed into a linear model and a penalty factor is added.Then the subcarrier for radar or communication purposes is selected.In consideration of the different evaluation standards of radar performance and communication performance,with the radar subcarriers or communication subcarriers,the different constraints of power are purposed.Finally,the joint allocation of subcarriers and power is achieved through loop optimization.Numerical results show that the proposed method saves power resources significantly.

关 键 词：雷达通信一体化 正交频分复用 功率分配 子载波分配 

分 类 号：TN957[电子电信—信号与信息处理]