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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

Active Publication Date: 2017-02-01
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The embodiment of the present invention provides an acoustic wave communication method and system based on multi-ary chirp-rate keying modulation, aiming to solve the existing problems of high bit error rate and low transmission rate

Method used

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  • Sound wave communication method and system based on multi-system chirp-rate keying modulation
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  • Sound wave communication method and system based on multi-system chirp-rate keying modulation

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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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Abstract

The invention is applicable to the field of communication, and provides a sound wave communication method based on multi-system chirp-rate keying modulation. The method comprises signal transmission and signal reception, and comprises the steps of generating a modulated signal by performing channel coding and chirp-rate keying modulation on a digital signal needing to be sent, and inserting a synchronization head before the modulated signal to form a transmission signal; and acquiring the original digital signal by performing synchronization processing on the received signal and demodulating the signal subjected to synchronization processing, wherein the synchronization processing comprises frame synchronization processing and / or code element synchronization processing. According to the method provided by the embodiment of the invention, the signal is modulated by using chirp-rate keying modulation, so that an information transmission rate is high; the received signal is subjected to frame synchronization and / or code element synchronization, and thus signal synchronization accuracy is improved to a certain extent, and signal receiving efficiency is further improved.

Description

technical field [0001] The embodiments of the present invention belong to the field of communication, and in particular relate to an acoustic wave communication method and system based on multi-ary chirp-rate keying modulation. Background technique [0002] With the development of the Internet of Things and smart devices, the demand for interconnection between devices is increasing. There are many technical solutions for building wireless communication systems between mobile devices, such as Bluetooth and WiFi, but they basically use electromagnetic waves as communication carriers. In recent years, sound wave communication technology, which has been more and more widely used, is more effective in some fields. There are advantages, such as security field, marine communication and indoor communication. [0003] Acoustic wave communication technology is an emerging technology developed in recent years. Compared with traditional radio communication technology, acoustic wave com...

Claims

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Application Information

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IPC IPC(8): H04B11/00H04L1/00H04L27/04H04L27/12
CPCH04B11/00H04L1/0006H04L1/0009H04L27/04H04L27/12
Inventor 骆志坤李攀峰
Owner TP-LINK
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