基于星座图的数字信号调制方法综述

近年来,数字信号调制识别以其良好的信息保密性和抗噪声性,逐渐成为了无线通信领域的一个重要研究方向.星座图作为调制识别的重要特征之一,由于在特征提取过程中不需要接收信号的先验信息,因此在特征提取方面具有明显的优势.根据上述原因,本文提出了基于星座图的数字信号调制方法综述.具体而言,本文将首先分析星座图的基本原理;其次通过总结现有的基于星座图的数字信号调制识别方案,分析了星座图在各个研究方向的特点.最后,本文给出了基于星座图方法的数字调制识别方案的发展趋势以及未来期望.

Overview on Digital Signal Modulation Methods Based on Constellation Diagram

In recent years, digital signal modulation recognition has gradually become an important line of research in the field of wireless communication owing to its high information confidentiality and anti-noise ability. As one of the important features of modulation recognition, the constellation diagram has obvious advantages in feature extraction because it does not need to receive prior information on the signal during feature extraction. For the above reasons, this study presents an overview of digital signal modulation methods based on the constellation diagram. In particular, it starts by analyzing the basic principle of the constellation diagram. Then, the characteristics of the constellation diagram in various lines of research are analyzed by summarizing the existing digital signal modulation recognition schemes based on the constellation diagram. Finally, the development trend and future expectations of digital modulation recognition schemes based on the constellation diagram are presented.