基于改进最大信漏噪比准则的波束赋形算法  

Beamforming algorithm based on improved maximum signal-to-leakage-and-noise ratio criterion

作　　者：赵子涛 宋志群[1] 王荆宁[1] 李勇[1] ZHAO Zitao;SONG Zhiqun;WANG Jingning;LI Yong(The 54th Research Institute of China Electronics Technology Group Corporation(CETC54),Shijiazhuang,Hebei 050081,China)

机构地区：[1]中国电子科技集团公司第五十四研究所,河北石家庄050081

出　　处：《河北工业科技》2022年第5期388-395,共8页Hebei Journal of Industrial Science and Technology

摘　　要：为了使通信系统能更加契合实际传输环境、保证系统公平性,提出了一种基于改进最大信漏噪比准则功率分配方式的波束赋形算法。首先根据接入节点的类型(基站或者终端)以及用户所处传输环境的不同对发射功率进行分配;其次依据用户执行任务的重要程度和设定的阈值上限的不同对发射功率进行二次调整,保证公平性。仿真结果表明,随着用户数目的增加,传统算法的公平性为一条下降的曲线,改进算法近似为一条水平直线,且用户数目越大,二者差值越大,改进算法的优势越明显;在用户数为12,权重间隔为1,阈值上限为1.4时,改进算法有着0.39 bps/Hz的系统容量提升。所设计的改进资源分配方式的算法能有效提高系统的公平性,在工程实际中有一定的使用价值。In order to make the communication system more suitable for the actual transmission environment and ensure the fairness of the system,a beamforming algorithm based on the improved maximum signal-to-leakage-and-noise ratio criterion power allocation was designed.Firstly,the transmission power was allocated according to the type of access node(base station or terminal)and the transmission environment in which the user was located;Secondly,the transmission power was readjusted according to the importance of the user′s task and the stated upper limit of the threshold to ensure fairness.The simulation results show that with the increase of the number of users,the fairness of the traditional algorithm is a descending curve,and the improved algorithm is approximately a horizontal line.The greater the number of users is,the greater the difference between the two is,and the more obvious the advantages of the improved algorithm are;When the number of users is 12,the weight interval is 1,and the upper limit of the threshold is 1.4,the improved algorithm has a system capacity improvement of 0.39 bps/Hz.The designed algorithm for improving resource allocation can effectively improve the fairness of the system,and has corresponding value in engineering practice.

关 键 词：无线通信技术 波束赋形 信漏噪比 分配标准 公平性调度 

分 类 号：TN929.5[电子电信—通信与信息系统]