一种零中频接收机I/Q失配校正方法
An I/Q Mismatch Correction Method for Zero IF Receivers
刘芳 1马瑞山1
作者信息
- 1. 中国电子科技集团第58研究所,江苏无锡 214035
- 折叠
摘要
零中频架构虽然结构简单,体积小、低功耗,但是存在I/Q失配问题,导致系统性能下降,本文给出一种I/Q失配校正算法,利用IMRR指标定量分析I/Q校正前后变化,此方法简单、计算量小并容易实现.16QAM调制信号作为输入信号利用matlab simulink进行建模仿真,给出I/Q校正前后仿真图及数据对比.
Abstract
Zero IF architecture has simple structure,small size and low power consumption,but there exists I/Q mismatch problem,which leads to system performance degradation,this paper gives an I/Q mismatch correction algorithm to quantitatively analyze the change of I/Q before and after the correction by using the IMRR index,which is simple,with small amount of computation,and easy to implement.16QAM modulation signal is modeled and simulated as the input signal by using matlab simulink,which gives the simulation before and after I/Q correction.The 16QAM modulated signal is modeled and simulated using matlab simulink,and the simulation diagrams and data comparison before and after I/Q correction are given.
关键词
零中频/I/Q校正/镜像/功率比Key words
zero IF/I/Q correction/mirror image/power ratio引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据