空间扩容通信模型的稀疏阵列优化设计  

Optimal Design of Sparse Arrays for Spatial Expansion Communication Model

作　　者：魏亚明 薛彬 蔡旺 王栋梁 董繁鹏 Wei Yaming;Xue Bin;Cai Wang;Wang Dongliang;Dong Fanpeng(School of Marine Science and Technology,Tianjin University,Tianjin 300072,China)

机构地区：[1]天津大学海洋科学与技术学院,天津300072

出　　处：《激光与光电子学进展》2022年第23期106-112,共7页Laser & Optoelectronics Progress

基　　金：国家自然科学基金(62075162,62001329);国防科技创新特区项目;天津市自然科学青年基金(19JCQNJC01700)。

摘　　要：向空间扩展维度的通信模型是进一步提升无线通信容量的重要研究方向。然而,空间维度上的正交信道构建主要还存在两方面的理论问题:一是病态问题;二是稀疏问题。针对上述两个问题,提出了一种新型空间维度扩容通信模型。该模型基于声光效应采用激光器扩展空间维度,利用优化算法设计稀疏阵列布局,采用聚类算法确定最优分布。通过仿真计算模型实例,可得其条件数为25,经聚类分析后仅需4个激光接收器,便可替代原88个单元天线,组成接收阵列。该模型对提升无线通信容量有着重要研究意义,为搭建水下远距离大容量的轻巧一体化通信系统提供新思路,并为无线通信模型的理论发展储备基础性研究。Developing improved communication models for expanding wireless communication capacity in spatial dimensions is an important research goal.However,there are two main theoretical concerns with the construction of orthogonal channels in spatial dimensions:one is ill-conditioned problem,and the other is sparseness.Addressing these two issues,we propose a new communication model for spatial-dimension expansion.Considering the acousto-optic effect,a laser is used to expand the spatial dimension;a sparse array layout is designed by an optimization algorithm;and the optimal distribution is determined by a clustering algorithm to complete the model layout design.Through the simulation calculation model example,it can be obtained that its condition number is 25.After cluster analysis,only 4 laser receivers can replace the original 88 unit antennas to form a receiving array.This model plays an important role in improving wireless communication capacity,provides a new concept for building underwater lightweight long-distance and high-capacity integrated communication systems,and contributes basic research for the theoretical development of future wireless communication models.

关 键 词：通信 空间扩容 声光效应 稀疏矩阵 聚类算法 

分 类 号：TN911[电子电信—通信与信息系统]