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Full-duplex underwater acoustic communication self-interference signal channel modeling method

A signal channel and modeling method technology, applied in the field of underwater acoustic communication, can solve problems such as no analytical solution, difficult modeling, self-loop interference, etc.

Inactive Publication Date: 2021-07-06
HARBIN ENG UNIV
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Problems solved by technology

[0003] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is to provide a full-duplex underwater acoustic communication self-interference signal channel modeling method for the problem that self-loop interference is difficult to model and has no analytical solution

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  • Full-duplex underwater acoustic communication self-interference signal channel modeling method

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Embodiment Construction

[0033] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0034] The purpose of the present invention is achieved like this:

[0035] A full-duplex underwater acoustic communication self-interference signal channel modeling method, comprising:

[0036] Step 1: Use the finite element modeling method to model the shell of the full-duplex underwater acoustic communication machine, and use the time-domain solver to obtain the self-loop interference time-domain signal;

[0037] In the finite element simulation software, the shell model of the communication machine is established at a ratio of 1:1. Two-dimensional axisymmetric or three-dimensional models can be used. The shell material refers to the material used by the shell entity. The frequency of the channel test signal is consistent with the frequency band range of the communication system. . The point sound source is used instead of the transmitting...

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Abstract

The invention discloses a full-duplex underwater acoustic communication self-interference signal channel modeling method, which adopts different methods to model self-loop interference and multipath interference, and comprises the following steps: firstly, adopting a finite element analysis method to model a full-duplex underwater acoustic communication set shell, and simulateing the process of transmitting acoustic waves from a transmitting transducer to a near-end receiving transducer; and secondly, establishing a vertical underwater acoustic channel model to obtain two most important contents in the self-interference cancellation process, namely arrival time delay and propagation loss. According to the invention, the prior channel information of the self-interference signal can be obtained, and the parameters of the adaptive filter can be adjusted based on the information so as to obtain a higher interference offset effect.

Description

technical field [0001] The invention relates to a full-duplex underwater acoustic communication self-interference signal channel modeling method, which belongs to the technical field of underwater acoustic communication. Background technique [0002] The development of full-duplex communication technology in the field of wireless communication, especially the development of in-band full-duplex communication technology has brought new opportunities for the development of underwater acoustic communication technology. In-band full-duplex underwater acoustic communication will greatly improve the bandwidth utilization and network throughput performance of underwater acoustic communication network. The main problem faced by full-duplex underwater acoustic communication is how to efficiently cancel the near-end strong self-interference signal to obtain the far-end desired signal. The near-end strong self-interference signal is mainly composed of two parts, one part is self-loop i...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B17/391H04B11/00H04B13/02
CPCH04B17/3912H04B11/00H04B13/02
Inventor 娄毅赵云江乔钢
Owner HARBIN ENG UNIV
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