QAM SIGNALS RECOGNITION BASED ON AMPLITUDE DISTRIBUTION

• 作 者: Fu Yusheng Ren Chunhui Huang W
• 机 构: University of Electronic Science and Technology of China,Military Representative Office in Chengdu
• 出 处: 电子科学学刊（英文版）
• 发表日期: 2004年期
• 关键词: Amplitude distribution Likelihood function Modulation classification

In this paper,a Quadrature Amplitude Modulation (QAM) signal recognition algorithm is proposed based on amplitude distribution of the signal.The algorithm uses envelop amplitude distribution information extracted by wavelet analysis to do modulation classification.It provides robustness for symbol rate determination.Simulation shows that it is more effective and convenient than the recognition algorithm of likelihood function at moderate Signal-to-Noise Ratio (SNR).