Sound wave communication method and system based on multi-system chirp-rate keying modulation
A technology of key modulation and acoustic wave communication, which is applied in the field of communication, can solve the problems of high bit error rate and low transmission rate, achieve high information transmission rate, reduce system bit error rate, and reduce the amount of computation
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Embodiment 1
[0055] figure 1 It shows a flow chart of an acoustic wave communication method based on multi-ary chirp-rate keying modulation provided by the first embodiment of the present invention, which is described in detail as follows:
[0056] Step S1, performing channel coding and multi-ary chirp-rate keying modulation on the digital signal to be sent to generate a modulated signal, and inserting a synchronization header before the modulated signal to form a transmitted signal;
[0057]Specifically, the digital signal to be sent (specifically, it may be a video signal, audio signal, etc., preferably an audio signal), such as raw data such as SSID (such as W) and password (such as 1) selected by the user, is modulated to form a modulated signal , and inserting a sync header in front of the modulated signal to form a transmit signal, preferably, the sync header includes a frame sync header and a symbol sync header;
[0058] Step S2, performing synchronous processing on the received si...
Embodiment 2
[0118] Figure 8 It shows a structural diagram of an acoustic wave communication system based on multi-ary chirp-rate keying modulation provided by the second embodiment of the present invention, the system includes a signal sending device 1, a signal receiving device connected to the signal sending device 1 device 2, wherein:
[0119] The signal sending device 1 is used to perform channel coding and multi-ary chirp-rate keying modulation on the digital signal to be sent to generate a modulated signal, and insert a synchronization header before the modulated signal to form a transmitted signal;
[0120] Specifically, the digital signal to be sent (specifically, it may be a video signal, audio signal, etc., preferably an audio signal), such as raw data such as SSID (such as W) and password (such as 1) selected by the user, is modulated to form a modulated signal , and inserting a sync header in front of the modulated signal to form a transmit signal, preferably, the sync heade...
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