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Underwater data transmission method and device

A data transmission method and technology of a data transmission device, applied in the field of data transmission, can solve problems such as low data transmission efficiency, and achieve the effects of ensuring efficiency, maximizing channel capacity, and optimizing transmission scheduling.

Active Publication Date: 2019-12-17
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides an underwater data transmission method and device, which can solve the problem of using the MAC protocol for data transmission in the prior art, which is designed for a single-input and single-output system. The problem of low data transmission efficiency

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  • Underwater data transmission method and device

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Embodiment Construction

[0044] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0045] It can be seen from the background technology that the existing MAC protocols Aloha, Slotted-FAMA, and DOTs used in underwater data transmission are all designed for single-input and single-output systems, and cannot be used in underwater data transmission systems using MIMO protocols. Taking advantage of the characteristics of the MIMO protocol results in low data transmission efficiency.

[0046] In view of this, the present invention provides an unde...

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Abstract

The invention discloses an underwater data transmission method and device. In a time period when the data receiving node receives the data signal, calculating is performed according to a channel capacity maximization formula to obtain a ai combination when the final value of the formula is maximum, and the ai combination is fed backto the k data sending nodes, the ai=1 indicating that the data sending nodes send the data signal and the ai=0 indicating that the data sending nodes do not send the data signal; and the k data sending nodes send data signals to the data receiving node according tothe combination. According to the invention, the limitation of underwater channel bandwidth is solved through the MIMO channel model, so that the underwater sending / receiving node can send / receive data in multiple paths at the same time, the sending scheduling of the data sending node is optimized through a formula, the channel capacity is maximized, and the underwater data transmission efficiencyis ensured.

Description

technical field [0001] The invention relates to the technical field of data transmission, in particular to an underwater data transmission method and device. Background technique [0002] Multiple-Input Multiple-Output (MIMO) technology plays an important role in the field of wireless communication and is a key technology of high-speed communication. MIMO technology is widely used on land, but the application in marine environment is currently less. The complexity of the underwater environment makes data communication have problems such as low efficiency, channel bandwidth limitation, and large transmission delay, and only acoustic signal communication can be used, so the existing MIMO technology is difficult to use underwater. To use the advantages of MIMO technology to solve the challenges encountered in underwater communication, it is necessary to optimize the MAC protocol (Multiple Access Control Protocol). [0003] The existing MAC protocols Aloha, Slotted-FAMA, and D...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B13/02H04B7/0413H04B7/0417H04L1/00
CPCH04B7/0413H04B7/0417H04B13/02H04L1/0007H04L1/0008H04L1/004
Inventor 王储张璇刘军崔军红关雯雪
Owner JILIN UNIV
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