Two Novel Packet Structures Based on FRFT Underwater Acoustic Communication System

Two novel packet structures are proposed based on the FRFT (Fractional Fourier Transform) communication system for different channel. The first packet is designed for the channel of fast change, and it consists of Chirp signal, sine signal and BPSK, which immensely improve the reliability of underwater communication; the second one is designed for the channel of slow change, and it consists of Chirp signal and BPSK, which greatly promote the efficiency of underwater communication. The simulation results show the effectiveness of two packet structures.

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