Time-reversal multiple access method applicable to underwater acoustic network

An underwater acoustic network, time-reversal technology, applied in error prevention/detection using return channel, baseband system, digital transmission system, etc., can solve the problems of difficult to guarantee channel correlation, large number of nodes, limited bandwidth and energy consumption, etc. , to achieve the effect of reducing network energy consumption, reducing system delay, and avoiding transmission conflicts
CN106571876AActive Publication Date: 2017-04-19NORTHWESTERN POLYTECHNICAL UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
NORTHWESTERN POLYTECHNICAL UNIV
Publication Date
2017-04-19

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Abstract

The invention provides a time-reversal multiple access method applicable to an underwater acoustic network and relates to the underwater acoustic communication and underwater network technology field. According to the method, a multiple access mechanism is appointed for an active time-reversal underwater acoustic network, conflicts and bump can be completely avoided when channel correlation is broken, success transmission probability is improved, through active TR space time focusing, spatial variation characteristics of an underwater acoustic channel is utilized to weaken broadcast characteristics of the underwater acoustic channel, not only can the crucial effect of effectively isolating signal interference among adjacent links under the distributed multi-hop environment be realized, but also excellent transmission concealment and confidentiality of the multiple access method is realized through weakening the broadcast characteristics of the underwater acoustic channel, on the condition that underwater acoustic correlation is not determined, spatial reuse and network throughput can be further improved even when channel weak correlation is broken, system time delay is reduced, and energy is saved.
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Description

technical field

[0001] The invention relates to the technical field of underwater acoustic communication and underwater network, in particular to a channel multiple access method of an underwater acoustic network. Background technique

[0002] In an underwater acoustic network, MAC (Media Access Control) is responsible for coordinating efficient and fair access channels for all nodes in the network, aiming to avoid transmission conflicts when different nodes access shared channels. Without the support of an efficient MAC mechanism, data packet transmission collisions between adjacent links in the process of exchanging information between nodes in the network will reduce network throughput, increase system delay, and cause very low channel utilization. rate and battery energy utilization, seriously deteriorating network performance. In underwater acoustic networks where bandwidth and energy resources are very precious, designing an efficient MAC mechanism suitable for underw...

Claims

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