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

A hybrid spectrum sharing method for full-duplex cognitive systems based on signal polarization

A cognitive system and hybrid technology, applied in the field of hybrid spectrum sharing of full-duplex cognitive systems based on signal polarization, can solve the problems of unsatisfactory interference performance and cognitive throughput performance of authorized users, and achieve improved recognition. Knowing throughput, overcoming spectrum utilization, avoiding collisions, and the effects of spectrum waste

Active Publication Date: 2019-08-06
NANJING UNIV OF FINANCE & ECONOMICS +1
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the full-duplex hybrid method, although it can be directly designed to use two kinds of cognitive transmission power for the presence and absence of licensed users, its interference performance and cognitive throughput performance for licensed users are not good. ideal

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 hybrid spectrum sharing method for full-duplex cognitive systems based on signal polarization
  • A hybrid spectrum sharing method for full-duplex cognitive systems based on signal polarization
  • A hybrid spectrum sharing method for full-duplex cognitive systems based on signal polarization

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0035] Usually, when authorized users do not exist (the authorized frequency band is idle), the transmission polarization state of cognitive users is not restricted, because there is no mutual interference between authorized users and cognitive users at this time, so the receiving polarization state of cognitive users can be compared with The mode setting matches the sending polarization state. When the authorized user exists, the cognitive user’s transmission polarization state is limited to the interference to the authorized user, and the authorized user will cause interference to the cognitive user. On the other hand, it should be mismatched with the polarization state of the authorized user as much as possible to avoid interference.

[0036] In the present invention, the cognitive user performs spectrum detection and licensed signal parameter learning in the licensed frequency band, and can judge in real time whether the licensed user occupies the spectrum based on the res...

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 hybrid spectrum sharing method for a full-duplex cognitive system based on signal polarization. First, this method enables cognitive radio users to continuously perform spectrum sensing, learn the polarization parameters of licensed user signals, and adjust the polarization state of cognitive users accordingly to access licensed frequency bands. When the cognitive user detects that the target licensed frequency band is occupied, the cognitive user transmits data using a polarization state that does not interfere with the licensed user. However, when the target licensed frequency band is not occupied, cognitive users transmit data using another polarization state that can improve cognitive communication throughput. The method proposed by the invention can not only effectively combat the self-interference of full-duplex communication, but also improve the throughput of cognitive communication and the performance of interference to authorized users.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a hybrid spectrum sharing method for a full-duplex cognitive system based on signal polarization. Background technique [0002] Existing spectrum sharing technologies can be classified into half-duplex spectrum sharing and full-duplex spectrum sharing. Half-duplex spectrum sharing includes four types: Interweave, Underlay, Overlay, and hybrid, while full-duplex spectrum sharing only has three modes: Interweave, Underlay, and Overlay. The hybrid method combines the Interweave and Underlay methods, that is, when the authorized user does not exist, the cognitive user works in the Interweave mode and communicates directly; when the authorized user exists, the cognitive user works in the Underlay mode and adopts a more Low transmit power transmits data. For the full-duplex hybrid method, although it can be directly designed to use two kinds of cognitive tr...

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): H04W16/14H04W12/06H04W24/02
CPCH04W12/06H04W16/14H04W24/02
Inventor 张璐伍之昂曹杰
Owner NANJING UNIV OF FINANCE & ECONOMICS
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