Next Article in Journal
Concrete Condition Assessment Using Impact-Echo Method and Extreme Learning Machines
Next Article in Special Issue
Geometry-Based Distributed Spatial Skyline Queries in Wireless Sensor Networks
Previous Article in Journal
A Virtual Environment to Improve the Detection of Oral-Facial Malfunction in Children with Cerebral Palsy
Previous Article in Special Issue
LS Channel Estimation and Signal Separation for UHF RFID Tag Collision Recovery on the Physical Layer
Article Menu

Export Article

Open AccessArticle
Sensors 2016, 16(4), 445; doi:10.3390/s16040445

A Sensitive Secondary Users Selection Algorithm for Cognitive Radio Ad Hoc Networks

1
Department of Information and Communication System, Hohai University, Changzhou 213022, China
2
Department of Signal and Information Processing, Heilongjiang Univetsity, Harbin 15006, China
3
Guangdong Petrochemical Equipment Fault Diagnosis Key Laboratory, Guangdong University of Petrochemical Technology, Maoming 525000, China
*
Author to whom correspondence should be addressed.
Academic Editor: Yunchuan Sun
Received: 21 February 2016 / Revised: 18 March 2016 / Accepted: 22 March 2016 / Published: 26 March 2016
(This article belongs to the Special Issue Identification, Information & Knowledge in the Internet of Things)
View Full-Text   |   Download PDF [1397 KB, uploaded 29 March 2016]   |  

Abstract

Secondary Users (SUs) are allowed to use the temporarily unused licensed spectrum without disturbing Primary Users (PUs) in Cognitive Radio Ad Hoc Networks (CRAHNs). Existing architectures for CRAHNs impose energy-consuming Cognitive Radios (CRs) on SUs. However, the advanced CRs will increase energy cost for their cognitive functionalities, which is undesirable for the battery powered devices. A new architecture referred to as spectral Requirement-based CRAHN (RCRAHN) is proposed to enhance energy efficiency for CRAHNs in this paper. In RCRAHNs, only parts of SUs are equipped with CRs. SUs equipped with CRs are referred to as Cognitive Radio Users (CRUs). To further enhance energy efficiency of CRAHNs, we aim to select minimum CRUs to sense available spectrum. A non-linear programming problem is mathematically formulated under the constraints of energy efficiency and real-time. Considering the NP-hardness of the problem, a framework of a heuristic algorithm referred to as Sensitive Secondary Users Selection (SSUS) was designed to compute the near-optimal solutions. The simulation results demonstrate that SSUS not only improves the energy efficiency, but also achieves satisfied performances in end-to-end delay and communication reliability. View Full-Text
Keywords: SSUS; CRAHNs; network architecture; energy efficiency; real-time SSUS; CRAHNs; network architecture; energy efficiency; real-time
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Li, A.; Han, G.; Wan, L.; Shu, L. A Sensitive Secondary Users Selection Algorithm for Cognitive Radio Ad Hoc Networks. Sensors 2016, 16, 445.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top