基于EIRP最优的智能天线阵赋型算法研究  

EIRP-optimized beamforming algorithm using smart antenna array

作　　者：刘江明[1] 杨峰[1] 丁良辉[1] 钱良[1] 支琤[1] LIU Jiang-ming;YANG Feng;DING Liang-hui;QIAN Liang;ZHI Cheng(School of Electronic Information and Electrical Engineering,Shanghai Jiaotong University,Shanghai 200240,China)

机构地区：[1]上海交通大学电子工程系,上海200240

出　　处：《信息技术》2016年第12期53-57,共5页Information Technology

基　　金：自然科学基金项目(61301117;61221001;61420106008);上海市数字媒体处理与传输重点实验室(12DZ2272600)

摘　　要：在实际天线阵列中,由于互耦的影响会使得单天线阵元辐射方向图畸变,导致传统的波束赋形算法性能恶化甚至失效。针对这个问题,文中提出了基于等效全向功率约束条件的粒子群算法,避免了传统的波束赋形算法的失效,提升了系统的等效全向功率。同时,为了减弱干扰方向的影响,文中进一步提出了零陷生成方案。仿真结果显示本文提出的算法不仅能够提升波束的等效全向功率,而且可以有效地生成干扰方向的零陷。This paper proposes a novel particle swarm optimization( PSO) algorithm for beamforming taking mutual coupling into account. It first designs the fitness function for PSO algorithm based on equivalent isotropic radiated power( EIRP). Then it proposes a null-steering control to suppress interference. Compared with the traditional beamforming algorithm based on ideal patterns,the proposed algorithm significantly reduces the impact of mutual coupling,raises the EIRP of systems and suppress interference,hence it is very attractive for practical realization. The simulation results show that the proposed PSO algorithm achieves the increase of EIRP.

关 键 词：互耦 波束赋形 等效全向功率 粒子群算法 

分 类 号：TN820[电子电信—信息与通信工程] TP18[自动化与计算机技术—控制理论与控制工程]