Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A wideband spectrum detection method and device

A wideband spectrum and detection method technology, applied in the field of signal processing, can solve the problems of low spectrum occupancy rate and high computational complexity, and achieve the effect of reducing the number of binary detections and reducing the overall computational complexity.

Active Publication Date: 2016-08-31
36TH RES INST OF CETC
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The present invention provides a broadband spectrum detection method and device to solve the problem of high computational complexity caused by binary detection of all subbands when the spectrum occupancy rate is not high

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A wideband spectrum detection method and device
  • A wideband spectrum detection method and device
  • A wideband spectrum detection method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0040] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0041] figure 1 A schematic flow chart of a wideband spectrum detection method provided by an embodiment of the present invention, the wideband spectrum detection method includes:

[0042] S100, binary detection of the presence or absence of signals in the entire frequency band.

[0043] Wherein, the binary detection method may be maximum-minimum eigenvalue ratio detection or detection based on frequency domain entropy.

[0044] S101. If the detection result is that no signal is included, determine that the frequency spectrum of the entire frequency band is idle.

[0045] S102, if the detection result is that the signal is contained, the first-level channel division is performed on the entire frequency band, and the sub-bands output ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a broadband spectrum detection method and device. The method comprises: performing binary detection on the presence or absence of signals in the entire frequency band; The first level of channel division, binary detection is performed on the subbands output after the first level of channel division, and the detection result is the subband containing the signal for the next level of channel division, and the subbands output after the next level of channel division Perform binary detection until the output subband bandwidth after division is consistent with the set spectrum detection resolution; when the output subband bandwidth after channel division is consistent with the set spectrum detection resolution, perform Spectrum decision for the entire spectrum. When the spectrum occupancy rate is not high, the technical solution of the present invention can greatly reduce the number of detection times compared with the prior art of performing binary detection on all subbands, thereby reducing the overall computational complexity of wideband spectrum detection.

Description

technical field [0001] The invention relates to the technical field of signal processing, in particular to a broadband spectrum detection method and device. Background technique [0002] Cognitive radio is an intelligent wireless communication technology that dynamically utilizes spectrum holes, and wideband spectrum detection is a prerequisite for its work. Assuming that the frequency band to be detected is divided into N channels, the task of wideband spectrum detection is to determine which channels are occupied by signals and which channels are idle. [0003] Binary detection is used to solve the following binary decision problems: [0004] h 0 :x[n]=w[n] [0005] h 1 :x[n]=s[n]+w[n] [0006] Among them, x(n) is the signal to be detected, w(n) is the noise, s(n) is the signal, H 0 and H 1 are the hypotheses for the absence of the signal and the presence of the signal, respectively. [0007] Through the binary detection method, it can be judged whether the above N...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04B17/00H04W24/00
Inventor 郑仕链杨小牛
Owner 36TH RES INST OF CETC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com