Title :
An Improved Method Dealing with the End Effect of Hilbert-Huang Transform
Author :
Dong-Liang, Guo ; Tie-Jun, Zhang ; Xian-Hua, Dai
Author_Institution :
Sch. of Inf. Sci. & Technol., Sun Yat-sen Univ., Guangzhou, China
Abstract :
An improved method dealing with the End Effect of Empirical Mode Decomposition is proposed. The period of the signal components is evaluated from high order autocorrelation function in the process of signal decomposition. Then, the signal components are extended based on the proposed criterion. The fluctuant trend of the extended sequences is consistent with the original signal components. Compared with the existed extending method, the proposed method ensure that the extended sequence is continual at the two ends and agree with original fluctuant trend, it is a low complexity and efficient method, which fit for periodic or quasi-periodic signal whose frequency modulation range is narrow¿Simulation results show the validity of the method.
Keywords :
Hilbert transforms; correlation methods; end effectors; frequency modulation; signal processing; Hilbert-Huang transform; empirical mode decomposition; end effect; extended sequence; frequency modulation range; high order autocorrelation function; original fluctuant trend; periodic signal; quasiperiodic signal; signal components; signal decomposition process; Autocorrelation; Computer networks; Information science; Information security; Signal processing; Signal resolution; Spline; Sun; Time frequency analysis; Wireless communication; Empirical Mode Decomposition; Hilbert-Huang Transform; end effect; extending method;
Conference_Titel :
Networks Security Wireless Communications and Trusted Computing (NSWCTC), 2010 Second International Conference on
Conference_Location :
Wuhan, Hubei
Print_ISBN :
978-0-7695-4011-5
Electronic_ISBN :
978-1-4244-6598-9
DOI :
10.1109/NSWCTC.2010.183
