摘要
振动会造成天线相对位置变化,产生干扰信号,导致通信质量下降.基于振动天线辐射理论模型,定量分析了四进制相移键控(quadrature phase shift keying,QPSK)系统天线振动对通信性能的影响,推导了QPSK系统天线在振动条件下系统误符率(symbol error rate,SER)公式,并通过计算机仿真验证了理论推导的正确性.理论分析和仿真结果表明,通信系统工作载波频率越高、天线振动加速度越大、振动频率越小,数字通信系统性能恶化越严重,该结果对天线结构设计、安装和无线通信网络分析规划提供了理论基础.
Vibration could cause the relative position change of antenna and generate interference signals,which leads to the decline of communication quality.Based on the theoretical model of vibration antenna radiation,the influence of antenna vibration of quadrature phase shift keying(QPSK)system on communication performance is quantitatively analyzed for the first time in this paper.The expression of symbol error rate of antenna for QPSK system under vibration condition is derived and validated by computer simulation.The simulation results show that the performance of the digital communication system degrades as the increase of carrier frequency and antenna vibration acceleration,as the decrease of the vibration frequency.This study provides theoretical basis for the antenna structure design,installation and wireless communication network analysis and planning.
作者
韩明超
李皓琰
孙国良
汲书强
HAN Mingchao;LI Haoyan;SUN Guoliang;JI Shuqiang(China Telecommunication Technology Labs,China Academy of Information and Communications Technology,Baoding 071000,China)
出处
《电波科学学报》
CSCD
北大核心
2021年第1期136-141,共6页
Chinese Journal of Radio Science
