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Collaborative ad hoc network data communication method and system based on OFDM system

A technology of data communication and ad hoc networking, which is applied in the field of communication and can solve problems such as large data transmission delays

Active Publication Date: 2020-10-23
NAT UNIV OF DEFENSE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a data communication method and system based on an OFDM system in a cooperative ad hoc network, so as to avoid the problem of large data transmission delay caused by changes in the environment and network topology

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  • Collaborative ad hoc network data communication method and system based on OFDM system
  • Collaborative ad hoc network data communication method and system based on OFDM system
  • Collaborative ad hoc network data communication method and system based on OFDM system

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Embodiment Construction

[0043] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0044] The embodiment of the present invention discloses an OFDM system-based cooperative ad hoc network data communication method and system, so as to avoid the problems of channel fading influence and large data transmission delay caused by environment and network topology changes.

[0045] Before describing this scheme, first explain the physical layer scheme of this application:

[0046] At the physical layer, in order to meet the corresponding requirements of ...

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Abstract

The invention discloses a collaborative ad hoc network data communication method and system based on an OFDM system. In the application, when a source node sends a data packet message, the source nodeneeds to select the most appropriate data transmission mode and cooperative node according to the signal-to-noise ratio of each neighbor node, thereby improving the quality of data transmission, reducing the influence of channel fading between nodes on data transmission, and reducing the data transmission delay; moreover, after the receiving end receives the data packet message, the signal-to-noise ratio of the adjacent node is dynamically updated, so that the updating of the system topological structure and the channel quality is realized, and the self-adaptive adjustment according to the change of the environment and the network topological structure is realized.

Description

technical field [0001] The present invention relates to the technical field of communication, and more specifically, relates to a data communication method and system of a cooperative ad hoc network based on an OFDM system. Background technique [0002] In recent years, cooperative communication technology has become one of the research hotspots in the field of communication because it can effectively combat wireless channel fading, improve system stability and increase network throughput. Cooperative communication technology uses the broadcast characteristics of wireless signals to select one or more adjacent nodes to forward signals when the direct transmission channel is bad, so as to obtain diversity gain and space increase, and improve channel capacity. At present, at the physical layer and MAC (Medium Access Control, media access control layer) layer, a lot of theoretical research has been carried out on the key technologies of collaborative communication, and good res...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W40/22H04W40/24H04L27/26
CPCH04W40/22H04W40/248H04L27/2601
Inventor 熊俊张殿生刘杰黄圣春魏急波赵海涛马东堂辜方林
Owner NAT UNIV OF DEFENSE TECH