西安电子科技大学学报（自然科学版）2012，Vol.39Issue(1)：17-22,6.DOI:10.3969/j.issn.1001-2400.2012.01.004
一种快速OFDM调制信号识别算法
Fast OFDM modulated signal recognition algorithm
摘要
Abstract
The intrinsic time-scale decomposition (ITD) method is a novel algorithm for time-frequency analysis, which can express the dynamic information of non-stationary signals with precise instantaneous parameters. An OFDM modulation recognition algorithm is proposed based on the ITD and the circular data analysis methods. The algorithm extracts three parameters as a co-feature vector to distinguish the OFDM from single carrier modulations. The impact of the carrier frequency, symbol rate and sampling rate on the recognition performance is also considered. The intermediate frequency signal can be processed directly, avoiding the carrier recovery process. Simulation results show that the algorithm can distinguish the OFDM from single carriers successfully even under a low SNR, and that it is also robust to system parameters.关键词
正交频分复用识别/固有时间尺度分解(ITD)/瞬时相位/三角矩Key words
OFDM recognition/the intrinsic time-scale decomposition (ITD)/instantaneous phase/trigonometric moment分类
信息技术与安全科学引用本文复制引用
朱颜锐,田斌,安金坤,孙永军,易克初..一种快速OFDM调制信号识别算法[J].西安电子科技大学学报（自然科学版）,2012,39(1):17-22,6.基金项目
国家部委预研基金资助项目(9140C13050108) （9140C13050108）
国家自然科学基金资助项目(60702060) （60702060）
高等学校学科创新引智计划资助项目(B08038) （B08038）
