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

Frequency spectrum sensing method based on chaos theory

A technology of spectrum sensing and chaotic signals, which is applied in the field of spectrum sensing of cognitive radio, can solve the problems of destroying the continuity of data transmission, reducing the time of data transmission of CR users, and impairing the quality of communication services of CR users, so as to improve the utilization rate of spectrum , Ensure continuity, improve timeliness and accuracy

Inactive Publication Date: 2011-03-02
BEIJING UNIV OF POSTS & TELECOMM
View PDF3 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the current cognitive radio network, such as IEEE802.22 wireless area network, in order to suppress the interference of cognitive radio signals to spectrum sensing, the existing spectrum sensing technology needs to use a silent period, during which CR users interrupt their own data This not only reduces the time for CR users to transmit their own data, but also destroys the continuity of data transmission and seriously damages the communication service quality (QoS, Quality of Service) of CR users.

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
  • Frequency spectrum sensing method based on chaos theory
  • Frequency spectrum sensing method based on chaos theory
  • Frequency spectrum sensing method based on chaos theory

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0020] see figure 2 , the embodiment of the present invention provides a spectrum sensing method based on chaos theory, including:

[0021] Generate cognitive radio transmission information 000: CR transmitter users encode the information to be sent to convert it into binary cognitive radio transmission information;

[0022] Modulating into a chaotic signal 100: the user at the CR transmitting end modulates the information transmitted by the cognitive radio into a chaotic signal;

[0023] Receive the signal and divide the signal into two channels 200: the user at the CR receiving end receives the signal on the spectrum hole and divides it into two channels, the first signal is the signal received from any antenna on the CR receiving end , used for spectrum sensing; the second signal is three independent signals received from the three antennas on the CR user receiving end, and is used for demodulation of chaotic signals;

[0024] Assume that the authorized user signal exist...

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 relates to a frequency spectrum sensing method based on chaos theory, which is applicable to a cognitive radio network. The method comprises the following steps: a cognitive radio transmitting terminal user transmits self data by chaos signals and a cognitive radio receiving terminal user demodulates frequency spectrum sensing and chaos signals. Through the method provided by the invention, the cognitive radio user does not need to use the silent period when frequency spectrum sensing is carried out, so that time for the cognitive radio user to transmit self data is increased, continuity of data transmission is ensured and communication quality of service (QoS) of the cognitive radio user is improved.

Description

technical field [0001] The invention belongs to the field of wireless communication, in particular to a spectrum sensing method of cognitive radio. Background technique [0002] With the development of wireless communication technology, people's demand for wireless spectrum resources is increasing. However, wireless spectrum is a scarce, limited resource. How to make full use of spectrum resources and improve spectrum utilization has become an urgent problem to be solved. Cognitive radio (CR, Cognitive radio) technology provides a feasible solution to this problem. In the CR system, users with cognitive functions (CR users) need to perceive the spectrum of authorized users, and use spectrum holes without affecting the normal communication of authorized users. vacant spectrum not used by it. [0003] In the current cognitive radio network, such as IEEE802.22 wireless area network, in order to suppress the interference of cognitive radio signals to spectrum sensing, the ex...

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): H04B17/00H04W16/14H04W24/00H04B17/382
Inventor 冯春燕魏冬曾志民郭彩丽刘芳芳
Owner BEIJING UNIV OF POSTS & TELECOMM
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