Spectrum Line Feature Analysis for Digital Communication Signals
Yang Lin①; Xu Xiao-dong①; Lu You-rong②; Dai Xu-chu①; Xu Pei-xia①
①Department of EEIS, University of Science and Technology of China, Hefei 230027, China; ②Southwest Institute of Electronic and Telecommunication Technology, Chengdu 610041, China
Abstract：Digital communication signals of different modulation schemes, with the nonlinearities applied to the complex envelope, always manifest themselves in spectrum line feature. In this paper, a complete theoretical analysis for the square and quartic spectrum line feature is carried out. The spectrum line’s existence, position and amplitude are deduced, which can server as a robust feature for potential application. Computer simulation results indicate that the spectrum line can be extracted even in the serious noisy and multi-path fading environment.
杨 琳; 许小东; 路友荣; 戴旭初; 徐佩霞. 常见数字通信信号的谱线特征分析[J]. 电子与信息学报, 2009, 31(5): 1067-1071 .
Yang Lin①; Xu Xiao-dong①; Lu You-rong②; Dai Xu-chu①; Xu Pei-xia①. Spectrum Line Feature Analysis for Digital Communication Signals. , 2009, 31(5): 1067-1071 .
2009, Vol. 31 
