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

Cognitive radio system capable of realizing spectrum sensing without quiet period

A spectrum sensing and silent period technology, applied in transmission systems, electrical components, transmission monitoring, etc., can solve the problems of reducing the time of CR user data transmission, impairing the quality of CR user communication service, and destroying the continuity of data transmission.

Inactive Publication Date: 2013-10-23
BEIJING UNIV OF POSTS & TELECOMM
View PDF6 Cites 0 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
  • Cognitive radio system capable of realizing spectrum sensing without quiet period
  • Cognitive radio system capable of realizing spectrum sensing without quiet period
  • Cognitive radio system capable of realizing spectrum sensing without quiet period

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0056] 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.

[0057]The cognitive radio system topology of the embodiment of the present invention is as follows figure 1 As shown, a pair of CR user equipment includes a CR transmitting device and a CR receiving device, and a pair of authorized user equipment includes an authorized transmitting device and an authorized receiving device. The authorized user equipment uses the allocated authorized spectrum resource, which is an available channel, and the CR user equipment uses the authorized spectrum resource when the authorized user equipment is not working, but the authorized user equipment may start working at any time. Cognitive user equipment needs to quickly and accurately detect authorized user signals that appear on the spectrum resource at a...

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 provides a cognitive radio system capable of realizing spectrum sensing without a quiet period, which is applied to cognitive radio networks. The system comprises a cognitive radio transmitting set and a cognitive radio receiving set, wherein the cognitive radio transmitting set is used for transmitting information by using chaotic signals; and the cognitive radio receiving set is used for simultaneously carrying out spectrum sensing and chaotic signal demodulation on the received signals. By using the system, a cognitive radio user does not need to use the quiet period when spectrum sensing is carried out, thereby increasing the time for the cognitive radio user to carry out data transmission, ensuring the continuity of data transmission and enhancing the communication QoS (Quality of Service) of the cognitive wireless user.

Description

technical field [0001] The invention belongs to the field of wireless communication, in particular to a cognitive radio system. 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 existing spectrum sens...

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): H04B1/02H04B1/06H04B17/00H04B17/382
Inventor 郭彩丽魏冬曾志民冯春燕刘芳芳
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