自由空间光通信系统中基于六角晶格分布的接收阵列布局设计  

Layout Design of Receiving Array Based on Hexagonal Lattice Distribution in FSO Communication System

作　　者：闫若琳 张剑[1] 陈如翰 YAN Ruolin;ZHANG Jian;CHEN Ruhan(Information Engineering University, Zhengzhou 450001, China)

机构地区：[1]信息工程大学,河南郑州450001

出　　处：《信息工程大学学报》2021年第4期393-398,404,共7页Journal of Information Engineering University

基　　金：国家自然科学基金资助项目(62071489)。

摘　　要：自由空间光通信系统中,多孔径接收技术是应对大气湍流引发信号衰落的有效手段。多孔径接收技术中,接收孔径间距离受限带来的衰落相关性造成系统性能损失,分析了弱大气湍流干扰下多孔径接收系统的特性,根据分析结果设计了一种基于六角晶格分布的接收阵列布局。在此基础上对所设计阵列的性能增益进行分析,得到了接收孔径数量取值的较优范围。仿真结果表明,与传统的方阵布局相比,在有限面积内,所设计的基于六角晶格分布的接收阵列布局方式具有优势,能够有效降低系统误码率,获得较大的性能增益。In the free-space optical communication system,the multi-aperture receiving technology is an effective means to deal with the signal fading caused by atmospheric turbulence.Considering the system performance loss caused by the fading correlation due to the limited distance between the receiver apertures in the multi-aperture receiving technology,this paper analyzes the characteristics of the multi-aperture receiving system under the weak atmospheric turbulence disturbance,and designs a receiver array layout based on the hexagonal lattice distribution.On this basis,the performance gain of the designed array is analyzed,and the optimal range of the number of receiver apertures is obtained.The simulation results show that,compared with the traditional square array layout,the proposed receiver array layout based on hexagonal lattice distribution has advantages in the limited area,which can effectively reduce the bit error rate of the system and obtain greater performance gain.

关 键 词：六角晶格 衰落相关性 接收阵列布局 多孔径接收技术 

分 类 号：TN918.1[电子电信—通信与信息系统]