Study of Underwater Acoustic Communication Technology Based on Hilbert-Huang Transform

With the characteristics that the instantaneous requencies of non-stationary signal can be given by Hilbert-Huang Transform (HHT) method, HHT modem is proposed. Combining with RAKE receivers and Reed-Solomon (RS) code, the HHT underwater acoustic communication system was built. The emulation of HHT underwater acoustic communication system was given through computer simulation. Results from processing experimental data show that the HHT underwater acoustic communication system is valid and steady in real communication environment. HHT method used in underwater acoustic communication is feasible.