I/Q不平衡的分析与补偿的研究  

Research on analysis and compensation of I/Q imbalance

作　　者：余骁禹 YU Xiao-yu(School of Computer Science and Engineering,Southwest Minzu University,Chengdu 610041,China)

机构地区：[1]西南民族大学计算机科学与工程学院,四川成都610041

出　　处：《西南民族大学学报（自然科学版）》2021年第4期432-439,共8页Journal of Southwest Minzu University(Natural Science Edition)

基　　金：四川省科普培训项目(2020JDKP0025)。

摘　　要：依托于特殊的增益性,时延性和正交性,I/Q通道普遍使用于各种通信系统中.但是,在真实的通信系统中,理想的I/Q信道并不存在,误差的产生以及不精确测量,都会导致输出信号不理想.本研究利用数学模型优化补偿算法,并进行数学模型理论仿真以及实测数据仿真,通过I/Q矫正的时域信号仿真结果,以及通过傅里叶变换的频域矫正结果,验证补偿结论.Relying on specific gain characteristic, delay characteristic, as well as orthogonality, I/Q channel exists in all kinds of communication system. However, in real communication system, perfect I/Q channel does not exist, errors and imprecise measurement would cause undesirable output. This research utilizes mathematical model to compensate the errors. The simulation experiment by Matlab exhibited the theory result from mathematical model and the actual result according from actual measurement data. The simulation includes the adjustment I/Q data of time-domain signal, and the frequency-domain signal after Fourier transform proves the implement of compensation.

关 键 词：I/Q信道 正交 增益 时延 

分 类 号：TN915[电子电信—通信与信息系统]