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Rule and case combined low-complexity underwater acoustic communication power setting method

A power setting and underwater acoustic communication technology, applied in sustainable communication technology, ultrasonic/acoustic/infrasonic transmission system, advanced technology, etc., can solve problems such as poor applicability, complex and inefficient implementation

Active Publication Date: 2021-07-02
ZHEJIANG UNIV
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the problem that the existing underwater acoustic communication power control method has poor applicability and relatively complex and inefficient implementation, the present invention proposes a low-complexity adaptive power setting method for underwater acoustic communication, which provides a rule A low-complexity underwater acoustic communication power setting method combined with a case study

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  • Rule and case combined low-complexity underwater acoustic communication power setting method
  • Rule and case combined low-complexity underwater acoustic communication power setting method
  • Rule and case combined low-complexity underwater acoustic communication power setting method

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Embodiment Construction

[0069] The method of the present invention will be further described in detail below in conjunction with the accompanying drawings and examples, the specific process of the method is as follows figure 1 shown.

[0070] There are underwater acoustic network communication source node A and destination node B. The physical layer of the nodes uses 4FSK modulation and convolutional codes for channel coding. The packet format used for inter-node communication is as follows: figure 2 As shown in , the information part is used to convey feedback information such as channel estimation.

[0071] Step (1) run initialization:

[0072] (1-1) The source node A establishes a rule base, and the rule base sets the theoretical method of sending power in the form of a cascade function:

[0073] The first function is the mapping function of the bit error rate curve, which is implemented by a look-up table, representing a one-to-one mapping relationship, the input is the bit error rate BER, and...

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Abstract

The invention discloses a rule and case combined low-complexity underwater acoustic communication power setting method. According to the method, rules and cases are combined, when new sending power needs to be set, firstly case matching is carried out, and different processing comprising setting by using the rules is carried out according to a matching result; comprising the steps of directly using historical case results for setting; and comprising the steps of performing case adjustment, namely performing power decision adjustment by combining case historical information on the basis of a most matched case by utilizing a rule-based setting method, taking an adjustment result as a final power control result, feeding back decision evaluation to a case library, and performing case storage and learning parameter updating. According to the method, on the basis of low implementation complexity, the reference effect of historical information is utilized to ensure high decision accuracy under regulation of rule constraints, efficient power control is achieved, and the method is suitable for underwater acoustic communication.

Description

technical field [0001] The invention belongs to the technical field of communication, in particular to the technical field of underwater acoustic communication (Underwater acoustic communication), in particular to a low-complexity underwater acoustic communication power setting method combining rules and cases. Background technique [0002] With the development of science and technology, the ocean plays an increasingly important role in the development of human beings. The utilization and development of marine resources, marine environment monitoring, and marine national defense security all require underwater information transmission. Effective and feasible means are also increasingly important. However, underwater acoustic channels often have the characteristics of severe multipath, narrow available bandwidth, Doppler effect, and time-space changes, which bring challenges to the design of reliable underwater acoustic communication. Adaptive modulation and coding technology...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B11/00H04B13/02
CPCH04B11/00H04B13/02Y02D30/70
Inventor 陈惠芳吕传磊谢磊
Owner ZHEJIANG UNIV
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