Local Mean Decomposition Improved by Local Energy Layer Extraction

A local mean decomposition (LMD) improved by energy layer extraction algorithm was proposed to overcome the mode mixing of LMD. The signal is decomposed by LMD to obtain a series product functions (PF). Integral operation is done for the energy of each PF, and the degree of energy leakage caused by mode mixing is determined according to the integral ratio. A new PF can be obtained by removing the next order PF from the high order PF with mode mixing. Subtracting the new PF from the signal, the new signal to be processed is got and LMD is carried on until all the frequency of PFs is independent each other. The simulation results show the effectiveness of the proposed algorithm.