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A joint algorithm of hopping period estimation for frequency-hopping signals
SPIE Proceedings, 2014Parameter estimation is an important component in the field of frequency-hopping communication. In particular, the accuracy and the efficiency of the hopping-cycle estimation is significant for these applications. The traditional time-frequency method, e.g., Short Time Fourier Transform, cannot work well with high resolution of both time and frequency,
Yusheng Fu +3 more
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Parameter Estimation of Multiple Frequency-Hopping Radar Signals
2017 10th International Symposium on Computational Intelligence and Design (ISCID), 2017In this paper, a new parameter estimation method with center-time transform applying the improved pulse repetition interval (PRI) to the central time sequences is proposed for multiple frequency-hopping (FH) radar signals. The parameters consist of hop-period, hop-time and carrier frequency, and the estimation of hop-period is the basis of the others ...
Xiangqian Zhang, Shunsheng Zhang
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Generalised likelihood-ratio detection of multiple-hop frequency-hopping signals
IEE Proceedings - Communications, 1994A noncoherent receiver that detects multiple-hop frequency-hopping (FH) signals is developed based on a generalized likelihood-ratio test (GLRT) theory. Hop rate, hop transition times and the set of candidate carrier frequencies are assumed to be known.
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Tracking a Frequency Hopped Signal Using Particle Filtering
2006 IEEE International Conference on Acoustics Speed and Signal Processing Proceedings, 2006The problem of tracking the frequency and complex amplitude of a frequency-hopped complex sinusoid is considered, using a novel stochastic state-space formulation and particle filtering tools. The problem is of considerable interest for interference mitigation in frequency-hopped wireless networks, and in military communications.
Nicholas D. Sidiropoulos +2 more
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Comparison of methods for parameter estimation of frequency hopping signals
2017 International Conference on Information and Communication Technology Convergence (ICTC), 2017In this paper, we describe a method of frequency-hopping signal detection, which is one of the methods of spread spectrum, by time-frequency analysis. Since the frequency hopping signal is a non-stationary signal, the signal changes very quickly. Therefore, time-frequency resolution is very important for detecting such non-stationary signals.
Nam-Kyoung Kim, Seong-Jun Oh
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Synchronization of Frequency Hopping DPSK Signals
MILCOM 1982 - IEEE Military Communications Conference - Progress in Spread Spectrum Communications, 1982The time synchronization problem of frequency hopping DPSK signals is considered in this paper. Before DPSK data can be properly demodulated by the receiver several dimensions of time synchronization must first be achieved. These include the acquisition and tracking of the frequency hop time epoch, symbol synchronization of the DPSK data stream, and ...
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Self-Noise of Frequency Hopping Signals
IEEE Transactions on Communications, 1969The self-noise of a system that uses frequency hopping for channel coding is determined for the limiting case of no receiver noise. The noise output is found to be a semirandom sequence of "clicks." Adjacent clicks are correlated, and the power density spectrum is of the form sin^{2} x .
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Time-frequency analysis of frequency hopping signal based on partial reconstruction
2017 IEEE International Conference on Signal Processing, Communications and Computing (ICSPCC), 2017The existing frequency hopping (FH) signal analysis methods have the disadvantages of poor time-frequency resolution and low noise suppression ability. Because of the large bandwidth feature of the FH signal, the time-frequency analysis methods are confined to the high sampling rate.
Yongshun Zhang, Xin Jia, Canbin Yin
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Compressive Sampling for Detection of Frequency-Hopping Spread Spectrum Signals
IEEE Transactions on Signal Processing, 2016zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Feng Liu 0012 +3 more
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Maximum based detection of slow frequency hopping signals
IEEE Communications Letters, 2003This letter studies a maximum based channelized intercept receiver. A comparison is made with the traditional logical OR based channelized intercept receiver. Theoretical and simulated results are presented using some parameters of a typical slow frequency-hopping combat radio (SINCGARS).
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