关键词: 矢量信号分析, 误差矢量幅度, 幅相补偿

Abstract: In many practical application systems such as digital mobile communication system,effective measurement of modulated signal quality is helpful to find the main reason of signal distortion as well as the potential errors in system designing.In this paper,the significations of some parameters,like EVM,and the processes of vector signal analysis are roundly analyzed.The importance of compensating the affection brought up by magnitude and phase distortion is also discussed.This paper realizes a vector signal analysis software according to the signal analysis model,which can be easily embedded in other application systems for different actual needs.

Key words: Vector signal analysis, Error Vector Magnitude(EVM), Magnitude and phase compensation