Interference mitigation and resource allocation method for underwater acoustic soft frequency reuse network

Abstract

The invention discloses an interference mitigation and resource allocation method for an underwater acoustic soft frequency reuse network, which comprises the following steps of: 1, in a multi-cell underwater acoustic network, enabling a control node to calculate the delay inequality of a received signal i and an interference signal j of the control node and design the length of a data packet of the control node according to the delay inequality and the position information of a plurality of data nodes; 2, deriving SINR formulas of the center node and the edge nodes; 3, calculating the averagecoverage probability, and carrying out the frequency band distribution of an edge region and a central region according to the average coverage probability and the total bandwidth of the underwater acoustic network system; 4, calculating the SINR, constructing a linear finite state Markov chain prediction equation, and predicting the CSI with propagation time delay; and 5, performing adaptive resource allocation of the data node according to the CSI obtained by prediction. Inter-cell interference of a time-varying underwater multi-cell network in the prior art is relieved, and the problem that long-time-delay feedback CSI used for optimizing resource allocation in cells in the prior art is inaccurate is solved.

Description

technical field [0001] The invention belongs to the technical field of underwater acoustic network frequency multiplexing, and in particular relates to an interference mitigation and resource allocation method for an underwater acoustic soft frequency multiplexing network. Background technique [0002] In the underwater acoustic network, the single-hop network is easy to implement and control, and can complete data collection tasks with a small coverage area and a small number of nodes. With the development of research and application of underwater acoustic networks, more and more large-scale underwater acoustic networks are used in ocean exploration practice. For example, multiple buoys are deployed on the sea surface as control nodes (including underwater acoustic communication equipment), and the control nodes communicate through wireless links on the buoys. Each control node communicates with multiple data nodes (sensor nodes or Vehicle nodes) for underwater acoustic co...

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Problems solved by technology

[0005] The purpose of the present invention is to provide an interference mitigation and resource allocation method for an underwater acoustic soft frequency multiplexing network, so as to alleviate the inter-cell interference of the time-varying underwater multi-cell network in the prior art, and optimize the resources in the cell in the prior art The long-latency feedback CSI used by the allocation is inaccurate

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