Time-reversed underwater acoustic network multiple access method for inter-link interference suppression

Abstract

The present invention provides a time-reversal underwater acoustic network multi-access method for inter-link interference suppression, adopting the multi-access method applicable to the MAC layer of the distributed underwater acoustic network and in the process of data transmission between nodes, avoiding Transmission conflict greatly improves the probability of a successful transmission and channel utilization rate, and reduces the energy consumption of the network; through the active TR space-time focus, the disadvantages are transformed into advantages by using the space-varying characteristics of the underwater acoustic channel, weakening the underwater acoustic channel The broadcast characteristics play a key role in effectively isolating signal interference between adjacent links in a distributed multi-hop environment; the power control method not only saves transmission power, but also greatly reduces the probability of collisions.

Description

technical field [0001] The invention relates to the field of underwater communication networking, and relates to a time reversal theory, a power control method, a multiple access control technology, etc., in particular to a multiple access method for an underwater acoustic network. Background technique [0002] The ocean accounts for about 71% of the earth's surface and is very rich in resources. With the scarcity of land resources, the pace of human beings entering the ocean is accelerating. Underwater Acoustic Networks (UAN, Underwater Acoustic Networks) monitors the marine environment through the establishment of an underwater network, which greatly enhances the ability to perceive underwater space information, and is beneficial to the maintenance of marine rights and interests, underwater target search, marine resource development, and marine environment monitoring and protection. Etc. is of great significance. In order to obtain a larger range of underwater spatial inf...

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the deficiencies of the prior art, the present invention provides a time-reversal underwater acoustic network multiple access method (E-TRMAC) oriented to inter-link interference suppression. In the network, data packet transmission collisions caused by severe interference between links lead to low channel utilization, time extension and high energy consumption.

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