An underwater acoustic wave communication method and system for a mobile intelligent terminal

Abstract

The application discloses an underwater acoustic wave communication method and system for a mobile intelligent terminal, wherein the mobile intelligent terminal is used as a sending terminal and a receiving terminal for communication, the method comprises the following steps: the sending terminal sends data signals according to a frame structure, each frame comprises a preamble, a data symbol sequence and a guard interval of blank space between the data symbols, the data symbols are represented by uplink sweep signals and downlink sweep signals covering the same frequency band range and representing different data bits; the receiving terminal analyzes and processes the received signals, and performs convolution with a time-reversed conjugate template of a preamble analysis reference signal to realize matched filtering, so as to complete preamble detection and frame header synchronization; after the synchronization is successful, the receiving terminal extracts each data symbol signal segment, and performs convolution with a time-reversed conjugate template of an uplink sweep analysis reference signal and a downlink sweep analysis reference signal to realize matched filtering, data symbol judgment is completed by comparing the matched strength, and corresponding data bits are obtained.

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