无线信道建模中二分K均值聚类多径分簇算法  

Multi-path clustering method based on bisecting K-means clustering in wireless channel modeling

作　　者：聂益芳[1] MBUGUA Allan Wainaina 李余 姚行艳[1] 蔡雪松 NIE Yifang;MBUGUA Allan Wainaina;LI Yu;YAO Xingyan;CAI Xuesong(School of Artificial Intelligence,Chongqing Technology and Business University,Chongqing 400067,China;Department of Electronic Systems,Aalborg University,Aalborg 9220,Denmark;Munich Research Center,Huawei Technologies Duesseldorf Gmbh,Munich 80992,Germany;Department of Electrical and Information Technology,Lund University,Lund 22100,Sweden)

机构地区：[1]重庆工商大学人工智能学院,重庆400067 [2]奥尔堡大学电子系,奥尔堡9220 [3]华为技术杜塞尔多夫有限公司慕尼黑研究中心,慕尼黑80992 [4]隆德大学电气信息技术系,隆德22100

出　　处：《电波科学学报》2023年第2期284-291,共8页Chinese Journal of Radio Science

基　　金：国家自然科学基金(61901067);重庆市自然科学基金(cstc2020jcyj-msxmX0339,cstc2020jcyj-msxmX0736);重庆市教委科学技术基金(KJQN202200833,KJQN201900824,KJQN201900808);重庆工商大学校内科研项目(2156014,1952025,1952002,1956011)。

摘　　要：为了对无线信道中的多径分量进行合理分簇,提出了一种毫米波信道二分K均值聚类多径分簇方法,解决了传统的K均值聚类分簇方法只能实现局部最优分簇的问题.采用马氏距离(Mahalanobis distance,MD)衡量多径分量距离(multi-path component distance,MCD),以簇分裂和迭代计算的方式对多径进行分簇.采用毫米波室内信道实验测试数据,验证了所提算法的有效性和可行性.结果表明,所提算法比传统K均值聚类分簇方法获得的分簇结果更合理,能将信道中多径参数相似度较高的多径有效且唯一地分配到同一簇.In order to rationally allocate multi-path component(MPC)of wireless channels to different clusters,a multi-path clustering algorithm based on Bisecting K-means clustering was proposed for millimeter-wave channels to solve the problem of partial optimization of traditional K-means clustering methods.The MPC clustering was implemented based on the cluster split and iteration computation strategy,when the Mahalanobis distance(MD)was regarded as the multipath component distance(MCD).The experiment measurement in indoor millimeter-wave channel was conducted to verify the effectiveness and feasibility of the proposed method.The experimental results show that the clustering result of proposed method is more rational than those of traditional K-means clustering methods,and the highly correlated MPCs are reasonably and uniquely allocated to the same cluster.

关 键 词：二分K均值 马氏距离(MD) 多径分簇 毫米波信道建模 

分 类 号：TN928[电子电信—通信与信息系统]