DVB-T (Digital Video Broadcasting-Terrestrial) spectrum sensing method and system

A terrestrial digital TV and spectrum sensing technology, which is applied in the field of communication, can solve problems such as difficulty in satisfying the real-time performance and processing speed of the spectrum sensing system, unfavorable commercial promotion, complex hardware structure, etc., achieve powerful parallel processing capabilities, ensure data processing speed, Program flexible effects

Active Publication Date: 2014-01-22
GUILIN UNIV OF ELECTRONIC TECH
View PDF4 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the system is difficult to meet the real-time and processing speed requirements of the spectrum sensing system, and

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
  • DVB-T (Digital Video Broadcasting-Terrestrial) spectrum sensing method and system
  • DVB-T (Digital Video Broadcasting-Terrestrial) spectrum sensing method and system
  • DVB-T (Digital Video Broadcasting-Terrestrial) spectrum sensing method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0039] see figure 1, a spectrum sensing system for terrestrial digital television broadcasting, mainly consists of a power supply part, a radio frequency transmitting and receiving part connected to the power supply part and a data processing part; wherein the radio frequency transmitting and receiving part includes a radio frequency receiving module and a radio frequency transmitting module; the data processing part includes The central control processing module, the analog-to-digital conversion module and the digital-to-analog conversion module; the data output end of the radio frequency receiving module is connected with the data input end of the central control processing module through the digital conversion module; the data output end of the radio frequency transmission module is connected with the digital-to-analog conversion module The data input terminals of the central control processing module are connected; the local oscillator output terminals of the central contro...

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 DVB-T (Digital Video Broadcasting-Terrestrial) spectrum sensing method and a DVB-T spectrum sensing system. A data output end of a radio-frequency receiving module is connected with a data input end of a central control processing module through a digital-to-analog conversion module. A data output end of a radio-frequency transmitting module is connected with the data input end of the central control processing module through a digital-to-analog conversion module. A local oscillator output end of the central control processing module is respectively connected with local oscillator control ends of the radio-frequency receiving module and the radio-frequency transmitting module. Aim at simplifying the system hardware structure, realizing the quick switching of a DVB-T frequency band, guaranteeing the spectrum sensing speed and saving processor resources, by using an FPGA (Field Programmable Gate Array) as a processor for flexibly controlling local oscillator frequency output, the goal of full-band coverage of DVB-T is realized; by windowing acquired signals and by adopting a CORDIC (Coordinated Rotation Digital Computer) algorithm, FFT (Fast Fourier Transform) processing is realized; by adopting an energy detection algorithm based on FFT, the sensing of the DVB-T frequency band is realized.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to a terrestrial digital television broadcasting (DVB-T) spectrum sensing method and system. Background technique [0002] With the development of wireless communication services, available spectrum resources are becoming increasingly scarce, and limited spectrum resources have gradually become a bottleneck restricting the development of wireless communication technologies. Therefore, saving spectrum resources and improving spectrum utilization will be an important field for future wireless communication development. However, under the current spectrum authorization allocation system, competition for spectrum resources in certain specific frequency bands is fierce, and unlicensed users cannot occupy unused frequency bands in other licensed frequency bands, resulting in low spectrum utilization. In the case of scarce spectrum resources and low utilization rate, in ...

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
IPC IPC(8): H04B17/00H04W16/14H04B17/382
CPCY02D30/70
Inventor 肖海林濮锦胜韩霄刘念闫坤
Owner GUILIN UNIV OF ELECTRONIC TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap