Detection of Fast Frequency-Hopping Signals Using Dirty Template in the Frequency Domain

Kyung Gyu Lee, Seong-Jun Oh

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The frequency-hopping technique is widely used in commercial and military communications for its superiority in anti-jamming and low probability of interception and detection capabilities. To further lower its detection probability, a frequency-hopping signal randomly changes its carrier frequency within a transmission symbol. Conventional detection methods have poor performance in the presence of fast frequency-hopping signals. To solve this problem, we propose a Dirty-Template-based detection scheme. Dirty Template was originally proposed to blindly estimate the time delay in an ultra-wide-band system. We propose that it can be employed in the frequency domain to detect fast frequency-hopping signal. The decision statistic derived from the cross-correlation between the template and received signals in the frequency domain is analyzed. Using this cross-correlation, a detection scheme, based on the Neyman-Pearson test is proposed. The simulation results show that the Dirty-Template-based scheme outperforms the autocorrelation-based scheme when the hopping period is short.

Original languageEnglish
JournalIEEE Wireless Communications Letters
DOIs
Publication statusAccepted/In press - 2018 Sep 13

Keywords

  • Correlation
  • Detection
  • Dirty Template.
  • Fast Frequency Hopping
  • Frequency Hopping
  • Indexes
  • Signal to noise ratio
  • Simulation
  • Spread spectrum communication
  • Time-frequency analysis

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering

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