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Modulation parameter estimation of LFM interference for direct sequence spread spectrum communication system in alpha-stable noise
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Liu, Mingquian, Han, Yuting, Chen, Yunfei, Song, Hao, Yang, Zhutian and Gong, Fengkui (2021) Modulation parameter estimation of LFM interference for direct sequence spread spectrum communication system in alpha-stable noise. IEEE Systems Journal, 15 (1). pp. 881-892. doi:10.1109/JSYST.2020.2991078
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Official URL: https://doi.org/10.1109/JSYST.2020.2991078
Abstract
The linear frequency modulation (LFM) interference is one of the typical broadband interferences in direct sequence spread spectrum (DSSS) communication system. In this article, a novel modulation parameter estimation method of LFM interference is proposed for the DSSS communication system in alpha-stable noise. To accurately estimate the modulation parameters, the alpha-stable noise should be eliminated first. Thus, we formulate a new generalized extended linear chirplet transform to suppress the alpha-stable noise, for a robust time-frequency, transformation of LFM interference is realized. Then, using the Radon transform, the maximum value after transformation and the chirp rate according to the angle related to the maximum value are estimated. In addition, a generalized Fourier transform is introduced to estimate the initial frequency of the LFM interference. For the performance analysis, the Cramér-Rao lower bounds of the estimated chirp rate and the initial frequency of the LFM interference in the presence of alpha-stable noise are derived. Moreover, the asymptotic properties of the modulation parameter estimator are analyzed. Simulation results demonstrate that the performance of the proposed parameter estimation method significantly outperforms existing methods, especially in a low SNR regime.
| Item Type: | Journal Article | ||||||||||||||||||||||||
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| Subjects: | Q Science > QA Mathematics Q Science > QC Physics T Technology > TK Electrical engineering. Electronics Nuclear engineering |
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| Divisions: | Faculty of Science > Engineering | ||||||||||||||||||||||||
| Library of Congress Subject Headings (LCSH): | Spread spectrum communications, Frequency modulation detectors , Fourier transformations , Parameter estimation | ||||||||||||||||||||||||
| Journal or Publication Title: | IEEE Systems Journal | ||||||||||||||||||||||||
| Publisher: | Institute of Electrical and Electronics Engineers | ||||||||||||||||||||||||
| ISSN: | 1932-8184 | ||||||||||||||||||||||||
| Official Date: | March 2021 | ||||||||||||||||||||||||
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| Volume: | 15 | ||||||||||||||||||||||||
| Number: | 1 | ||||||||||||||||||||||||
| Page Range: | pp. 881-892 | ||||||||||||||||||||||||
| DOI: | 10.1109/JSYST.2020.2991078 | ||||||||||||||||||||||||
| Status: | Peer Reviewed | ||||||||||||||||||||||||
| Publication Status: | Published | ||||||||||||||||||||||||
| Publisher Statement: | © 2020 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. | ||||||||||||||||||||||||
| Access rights to Published version: | Restricted or Subscription Access | ||||||||||||||||||||||||
| RIOXX Funder/Project Grant: |
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