Correction of frequency offset of FFT-based frequency hopping detector

Kyung Gyu Lee, Seong-Jun Oh

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Frequency hopping (FH) is widely used in commercial and military communications. The purposes of FH in military communications are anti-jamming and low probability of interception. To implement low probability of detection or interception, FH signals randomly change carrier frequency. There are several kinds of FH detectors for example autocorrelation detector, maximum-likelihood detector and optimum detection. We focused on FFT-based detector kinds of maximum-likelihood detector. The FFT-based detector can monitor several MHz and more. However, the FFT-based detector suffers from frequency offset problem due to a lack of information of targeted FH signals. To improve the drawback, we propose interpolation estimation of frequency offset. The proposed approach mitigates the effect of frequency offset and increases probability of detection. Furthermore, the proposed approach has low complexity and does not require additional hardware. In this paper, we show the linear interpolation estimation of frequency offset and compare it with conventional detector in probability of detection.

Original languageEnglish
Title of host publicationInternational Conference on Information and Communication Technology Convergence
Subtitle of host publicationICT Convergence Technologies Leading the Fourth Industrial Revolution, ICTC 2017
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages846-848
Number of pages3
Volume2017-December
ISBN (Electronic)9781509040315
DOIs
Publication statusPublished - 2017 Dec 12
Event8th International Conference on Information and Communication Technology Convergence, ICTC 2017 - Jeju Island, Korea, Republic of
Duration: 2017 Oct 182017 Oct 20

Other

Other8th International Conference on Information and Communication Technology Convergence, ICTC 2017
CountryKorea, Republic of
CityJeju Island
Period17/10/1817/10/20

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Computer Science Applications
  • Information Systems
  • Information Systems and Management

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