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Wireless Personal Communications
Published in: Wireless Personal Communications 3/2017

18-08-2017

Parameter Blind Estimation of Frequency-Hopping Signal Based on Time–Frequency Diagram Modification

Authors: Weihong Fu, Xiaohui Li, Naian Liu, Yongqiang Hei, Juan Wei

Published in: Wireless Personal Communications | Issue 3/2017

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Abstract

To effectively estimate the parameters of the multiple frequency-hopping signals, a blind parameter estimation method based on time–frequency diagram modification is proposed. Firstly, the observed signal is transformed to the time–frequency domain, using short time Fourier transform with overlapping windows. Then an energy detection method based on adaptive threshold is used to modify the time–frequency diagram, and the parameters of the frequency-hopping signals are finally obtained from the modified spectrogram. Theoretical analysis and simulation results show that the method proposed can get a clear time–frequency diagram at low signal-to-noise ratio (SNR), and its accuracy of parameter estimated is higher than that of previous methods. When SNR is −10 dB, estimation errors of frequency, hopping time and hop duration is 0.0002, 0.0008 and 0.0013, respectively, which are about 1–2 orders of magnitude lower over the previous method.
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Metadata
Title
Parameter Blind Estimation of Frequency-Hopping Signal Based on Time–Frequency Diagram Modification
Authors
Weihong Fu
Xiaohui Li
Naian Liu
Yongqiang Hei
Juan Wei
Publication date
18-08-2017
Publisher
Springer US
Published in
Wireless Personal Communications / Issue 3/2017
Print ISSN: 0929-6212
Electronic ISSN: 1572-834X
DOI
https://doi.org/10.1007/s11277-017-4710-5

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