基于块对角化的通信雷达频谱共存设计  

Communication-radar coexistence design based on block diagonalization

作　　者：韩凯峰 黄立涛 陈力 王志勤 HAN Kaifeng;HUANG Litao;CHEN Li;WANG Zhiqin(Mobile Communication Innovation Center,China Academy of Information and Communications Technology,Beijing 100191,China;Department of Electronic Engineering and Information Science,University of Science and Technology of China,Hefei 230026,China)

机构地区：[1]中国信息通信研究院移动通信创新中心,北京100191 [2]中国科学技术大学电子工程与信息科学系,安徽合肥230026

出　　处：《通信学报》2021年第12期226-235,共10页Journal on Communications

基　　金：国家自然科学基金资助项目(No.62071445);科技部重点研发计划基金资助项目(No.2020YFB1807603)。

摘　　要：针对通信与雷达同频共存问题,提出了基于块对角化的波束设计方案。首先,在保证不对雷达设备造成干扰和满足功率限制的前提下,构建最大化通信系统和速率的优化问题。为求解该问题,引入了通信用户间干扰为0的约束,使非凸的原问题具备解析解。根据引入约束带来的关于通信基站发射天线数的限制,提出了另外2种算法进一步考虑当不满足限制条件时的块对角化设计。仿真结果表明,所提算法能在各种场景下引入约束使原问题有解,计算复杂度较低,具备较高的实际工程应用价值。Aiming at the problem of coexistence of communication and radar at the same frequency,a block diagonalization design scheme was proposed.Firstly,an optimization problem was established to maximum the communication system’s sum rate subject to no interference at the radar side and the power budget.To solve this problem,the constraint that the interference between communication users is zero was introduced,so that the non-convex original problem could have a closed-form solution.Then,based on the restriction on the number of base station’s transmit antennas caused by introducing the constraint,two other algorithms were proposed to further consider the block diagonalization design when the constraint was not met.The simulation results show that the proposed algorithms can introduce the constraint to solve the original problem in various scenarios with relative-low computation complexity,which can be implemented in practice.

关 键 词：频谱共享 通信雷达频谱共存 块对角化 用户选择 

分 类 号：TN929.5[电子电信—通信与信息系统]