流态天线辅助混合场通信中天线位置优化设计  

Optimization Design of Antenna Position in Fluid Antenna Assisted Hybrid Field Communication

作　　者：孙付安 陆佳程 张军 SUN Fuan;LU Jiacheng;ZHANG Jun(School of Communications and Information Engineering,Nanjing University of Posts and Telecommunications,Nanjing 210003,China)

机构地区：[1]南京邮电大学通信与信息工程学院,江苏南京210003

出　　处：《移动通信》2024年第10期121-126,共6页Mobile Communications

基　　金：国家自然科学基金面上项目“近场与空间非平稳的超大规模MIMO无线传输理论与方法”(62071247);江苏省研究生科研与实践创新计划项目“基于紧凑阵列的超大规模MIMO无线传输关键技术研究”(KYCX24_1181)。

摘　　要：为解决FA辅助的混合场无线通信系统中存在的FA移动导致用户在远近场通信中切换造成性能损失的问题,提出了系统和速率最大化的基站FA位置矩阵的粒子群优化方法。在算法外层优化粒子位置,根据位置判断用户处于远场或近场并采用相应方式建模信道;内层则采用ZF波束成形并计算适应度值。仿真结果表明,所提算法能有效应对FA移动引发的用户远近场变化特性,弥补性能损失。To address the performance degradation caused by user handover between near-field and far-field communications due to fluid antenna(FA)movement in FA-assisted hybrid wireless communication systems,a particle swarm optimization method is proposed to maximize system sum-rate through the base station's FA position matrix.Particle positions are optimized in the algorithm's outer layer,determining whether the user is in the far or near field based on their position and modeling the channel accordingly.In the inner layer,zero-forcing beamforming is employed and a fitness value is calculated.Simulation results demonstrate that the proposed algorithm effectively manages the changing characteristics in user near and far fields due to FA movement and thus mitigates performance losses.

关 键 词：流态天线 近场通信 远场通信 和速率最大化 

分 类 号：TN929.5[电子电信—通信与信息系统]