摘要
针对正交频分复用(Orthogonal Frequency Division Multiplexing,OFDM)和基于滤波器组的多载波(Filter Bank-based Multicarrier,FBMC)的调制识别进行研究。首先分析OFDM/FBMC子载波的二次方谱;接着通过建模得到各信号所对应的二次方谱表达式,得到各谱线的强度及位置;最后设置特征参数,在高斯噪声下完成OFDM/FBMC的调制识别。仿真结果表明,在较低信噪比下信号识别率仍较高。
This paper focuses on the modulation recognition of orthogonal frequency division multiplexing(OFDM)and filter bank-based multicarrier(FBMC).Firstly,the quadratic spectrum of subcarrier signals is analyzed for OFDM and FBMC.Then,the corresponding quadratic spectrum expression is gotten through modeling,and the intensity and position of each spectrum are gotten.Finally,seting the characteristic parameters,the modulation identification of OFDM/FBMC is accomplished under Gaussian noise.The simulation results show that the signal recognition rate is still higher at a lower SNR.
作者
邵凯
李慧
周娟红
Shao Kai;Li Hui;Zhou Juanhong(School of Communication and Information Engineering,Chongqing University of Posts and Telecommunications,Chongqing 400065,China;Chongqing Key Laboratory of Mobile Communications Technology,Chongqing University of Posts and Telecommunications,Chongqing 400065,China)
出处
《电子技术应用》
2021年第6期67-70,76,共5页
Application of Electronic Technique
关键词
调制信号识别
FBMC
OFDM
二次方谱
modulation signal recognition
filter bank-based multicarrier(FBMC)
orthogonal frequency division multiplexing(OFDM)
quadratic spectrum
