Spectrum sensing schemes for static primary user signal under awgn and rayleigh fading channels

Wasan Kadhim Saad, Mahamod Ismail, Rosdiadee Nordin, Ayman A. El-Saleh

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

This paper taught the performance of the proposed sensing models, namely, constant false alarm rate- dynamic waveform detector (CFAR-DWD) are categorized as dynamic threshold (DT), two-stage (TS), and adaptive two-stage (ATS) detection for accurately detecting of the static-primary user (PU) signals, where the state of the PU signal not change during the sensing duration. Whereby it is carried out by deriving a closed-form expressions for the average detection probability for the proposed models over AWGN and Rayleigh fading channels under low signal-to-noise ratio (SNR) environments. In addition, complete mathematical analysis for the normalized throughput and average channel capacity of the secondary network are developed over AWGN and Rayleigh fading channels to demonstrate the impact of the opportunistic spectrum access. Comparison based on simulation was performed of the detection performance and the normalized throughput among the proposed CFAR-DWD, CFAR-DED and conventional schemes. The simulation results demonstrate that the proposed CFAR-DWD can achieve a precise detection performance significantly outperformed that of the CFAR-DED and conventional schemes. Furthermore, there is a significant impact on the detection performance of the CFAR-DWD and CFAR-DED models by Rayleigh fading, and the impact of Rayleigh fading gets clearer when reduces to (0.01) and reaches up to (0.9), which will lead to poor spectrum usage.

Original languageEnglish
Pages (from-to)291-309
Number of pages19
JournalJournal of Theoretical and Applied Information Technology
Volume79
Issue number2
Publication statusPublished - 20 Sep 2015

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Spectrum Sensing
Rayleigh Fading Channel
Rayleigh fading
False Alarm Rate
Fading channels
Waveform
Detector
Detectors
Rayleigh Fading
Sensing
Throughput
Opportunistic Spectrum Access
Detection Probability
Channel Capacity
Channel capacity
Mathematical Analysis
Demonstrate
Signal to noise ratio
Simulation
Closed-form

Keywords

  • AWGN channel
  • Constant false alarm rate (CFAR)
  • Dynamic energy detection (DED)
  • Dynamic waveform detection (DWD)
  • Hard decision combining (HDC) rules
  • Rayleigh fading channel

ASJC Scopus subject areas

  • Computer Science(all)
  • Theoretical Computer Science

Cite this

Spectrum sensing schemes for static primary user signal under awgn and rayleigh fading channels. / Saad, Wasan Kadhim; Ismail, Mahamod; Nordin, Rosdiadee; El-Saleh, Ayman A.

In: Journal of Theoretical and Applied Information Technology, Vol. 79, No. 2, 20.09.2015, p. 291-309.

Research output: Contribution to journalArticle

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