矢量信号调制质量分析方法研究与实现

采用矢量信号分析技术通过分析已调信号的特性，能够快速发现引起信号失真的原因，定位系统设计中的错误，该技术在信号分析仪器、数字通信等领域应用广泛。本文在深入研究矢量分析技术的基础上，建立了矢量信号分析模型，并对矢量信号分析中对结果影响较大的最佳判决未知和幅相补偿模块进行了详细分析。利用软件实现了矢量信号调制质量分析，能够快速的对EVM等指标进行计算，且易于嵌入其它系统和设备，使用方便。

Research and Realization of Vector Signal Modulation Quality Analysis

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.