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

Energy-efficient cooperative spectrum sensing method

A collaborative spectrum sensing, energy-efficient technology, applied in the direction of reducing energy consumption, network planning, transmission system, etc., can solve the problem of not considering the sample signal, and achieve the effect of saving sensing energy, saving transmission energy, and improving sensing reliability.

Inactive Publication Date: 2015-10-07
HOHAI UNIV CHANGZHOU
View PDF5 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This scheme mainly sets an energy-effective spectrum sensing method from the perspective of saving spectrum sensing time, and this method does not consider the energy loss caused by continuous sensing of sample signals with energy values ​​​​between the double thresholds

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
  • Energy-efficient cooperative spectrum sensing method
  • Energy-efficient cooperative spectrum sensing method
  • Energy-efficient cooperative spectrum sensing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] The present invention will be further described below in conjunction with the accompanying drawings.

[0024] The spectrum sensing system model of the present invention is as figure 1 As shown, in the cognitive wireless network coexisting with the primary user network, N cognitive users CRi detect the idle frequency spectrum of the primary user PU. In the collaborative spectrum sensing process, it is set that the main user signal is first transmitted from the main user to the cognitive user in one direction, and then the detection result is broadcast by the cognitive user to the fusion center SU 1 , and the fusion judgment is performed by the fusion center to obtain the final judgment result.

[0025] Such as figure 2 As shown, a time slot of spectrum sensing is divided into: a primary user detection phase and a detection result reporting phase. Define the state of the primary user in the kth time slot as H p (k), where H p (k)=H 1 Indicates that the primary user...

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 an energy-efficient cooperative spectrum sensing method. Dual energy thresholds are arranged in the spectrum sensing method, and the number of perceiving users participating in sensing is saved through two rounds of screening. Firstly, N perceiving users perform sensing anticipation on a main user, then M users of which the energy values are out of the two thresholds are selected to perform sensing continuously, and the rest N-M perceiving users enter the dormancy state so as to save sensing energy consumption. In the second phase, S perceiving users of which the cumulative energy values are less than the first threshold are selected and sensing results are transmitted to a fusion center without a common control channel. The rest M-S perceiving users enter the dormancy state, and the fusion center tacitly approves that the sensing results of the M-S perceiving units are that the main user exists. Sensing energy consumption of the system is saved by the method of reducing the number of the users participating in sensing under the condition of ensuring spectrum sensing performance.

Description

technical field [0001] The invention relates to an energy efficient cooperative spectrum sensing method, which belongs to the technical field of cognitive radio. Background technique [0002] With the development of radio services, the available spectrum resources are increasingly scarce, and the low spectrum utilization rate is exacerbating this situation. As a key technology for the development of next-generation networks, cognitive radio effectively solves the problem of shortage of wireless spectrum resources. Cognitive radio interacts with its surrounding environment and understands and learns, and adaptively adjusts wireless operating parameters such as power, coding, and carrier modulation according to changes in the surrounding environment, thereby improving communication performance and spectrum utilization. [0003] Spectrum sensing is the key and prerequisite for the realization of cognitive radio. Its purpose is to accurately and quickly perceive as many spectru...

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 Applications(China)
IPC IPC(8): H04W16/14H04B17/382
CPCH04W16/14Y02D30/70
Inventor 高远谢秀坤朱昌平姚澄汤一彬单鸣雷
Owner HOHAI UNIV CHANGZHOU
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