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A method and system for underwater wireless communication with adaptive photoacoustic switching

A wireless communication and self-adaptive technology, applied in the field of communication, can solve the problems of short communication distance and the development of optical communication, and achieve the effects of strong anti-interference ability, good distance characteristics, and high energy transmission efficiency

Active Publication Date: 2019-12-17
SHANDONG UNIV
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  • Description
  • Claims
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Problems solved by technology

Although wireless optical communication has certain advantages in terms of speed, power consumption, volume, etc., its shortcomings of short communication distance restrict the further development of optical communication in the field of underwater wireless sensor networks.

Method used

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  • A method and system for underwater wireless communication with adaptive photoacoustic switching
  • A method and system for underwater wireless communication with adaptive photoacoustic switching
  • A method and system for underwater wireless communication with adaptive photoacoustic switching

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Embodiment 1

[0046] In underwater communication, it is generally necessary to deploy two or more communication nodes for signal transmission, and any communication node can be used as both a transmitter and a receiver. This method takes the communication between any two nodes as an example to illustrate this in detail Underwater wireless communication method with adaptive photoacoustic switching.

[0047] This embodiment proposes an underwater wireless communication method for adaptive photoacoustic switching, such as figure 1 shown, including the following steps:

[0048] S1. The first node sends a request signal to the second node in the underwater acoustic communication mode;

[0049] Although the transmission rate of sound waves in water is very low, it has the advantages of good transmission stability and long transmission distance. Since the amount of request signal data is small, and acoustic communication is more stable than optical communication, it is preferable to use acoustic ...

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Abstract

The invention discloses an underwater wireless communication method and system with adaptive light and sound switching. The method comprises a step of detecting a channel signal-to-noise ratio between two communication nodes, a step of selecting a fixed sound communication mode or different light communication modes as an agreed communication mode between the two communication nodes according to the channel signal-to-noise ratio, and a step of executing the data transmission between the two communication nodes according to the agreed communication mode. The method and the system have the advantage that the communication mode can be adaptively selected according to the condition of a communication channel.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to an underwater wireless communication method and system for adaptive photoacoustic switching. Background technique [0002] Underwater acoustic communication is currently the most mature underwater wireless communication technology, but the transmission rate of sound waves in water is only 1.5×10 3 m / s, and the speed of light in water (3×10 8 m / s) differ by 5 orders of magnitude. At the same time, the ever-increasing ocean noise such as military sonar is seriously affecting the lives of marine mammals such as dolphins and whales, and even causing hearing loss or death. Although the propagation delay of underwater acoustic communication is large, the communication bandwidth is low, the multipath effect is serious, and the marine ecology is affected, its biggest advantage is that it can achieve a long transmission distance. [0003] Underwater wireless optical c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B13/02
CPCH04B13/02
Inventor 王景景施威刘琚贾智平张志勇
Owner SHANDONG UNIV
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