Rl-based frequency hop** with block-shifted patterns: Balancing between anti-jamming performance and synchronization overhead

J Zhang, X Wu - IEEE Transactions on Vehicular Technology, 2023 - ieeexplore.ieee.org
Wireless transmissions are inherently vulnerable to jamming attacks. Frequency hop**
(FH) has been widely employed in practice to combat jamming attacks. Although the recent …

Robust frequency-hop** spectrum estimation based on sparse Bayesian method

L Zhao, L Wang, G Bi, L Zhang… - IEEE Transactions on …, 2014 - ieeexplore.ieee.org
This paper considers the problem of estimating multiple frequency hop** signals with
unknown hop** pattern. By segmenting the received signals into overlapped …

Research on LPI radar signal detection and parameter estimation technology

W Tao, J Kaili, L **gyi, J Tingting… - Journal of Systems …, 2021 - ieeexplore.ieee.org
Modern radar signals mostly use low probability of intercept (LPI) waveforms, which have
short pulses in the time domain, multicomponent properties, frequency hop**, combined …

Joint signal parameter estimation of frequency-hop** communications

TC Chen - IET communications, 2012 - IET
In the problem of the parameter estimation of frequency-hop** (FH) signals, most of
existing works can only provide the unauthorised detection of the FH signals or estimate the …

A fast estimation algorithm for parameters of multiple frequency-hop** signals based on compressed spectrum sensing and maximum likelihood

Y Li, F Wang, G Fan, Y Liu, Y Zhang - Electronics, 2023 - mdpi.com
The parameter estimation of multiple frequency-hop** (multiple FH) signals with
frequency-switching time is a great challenge under conditions in which the number of …

Strong no-hit-zone sequences for improved quasi-orthogonal FHMA systems: Sequence design and performance analysis

Q Zeng, Z Zhou, X Liu, Z Liu - IEEE Transactions on …, 2019 - ieeexplore.ieee.org
This paper is focused on the optimal design and performance analysis of a novel class of no-
hit-zone frequencyhop** sequences (NHZ-FHSs) in quasi-synchronous FH multiple …

Adaptive Joint Carrier and DOA Estimations of FHSS Signals Based on Knowledge-Enhanced Compressed Measurements and Deep Learning

Y Jiang, F Liu - Entropy, 2024 - mdpi.com
As one of the most widely used spread spectrum techniques, the frequency-hop** spread
spectrum (FHSS) has been widely adopted in both civilian and military secure …

An EM algorithm for blind hop timing estimation of multiple FH signals using an array system with bandwidth mismatch

X Liu, J Li, X Ma - IEEE Transactions on Vehicular Technology, 2007 - ieeexplore.ieee.org
Hop timing estimation for noncooperative frequency-hopped (FH) signals is an important
problem that feeds into the multiple facets of military communications, from interception of …

Frequency-hop** signal parameters estimation based on orthogonal matching pursuit and sparse linear regression

Y Wang, C Zhang, F **g - IEEE Access, 2018 - ieeexplore.ieee.org
This paper addresses the problem of estimating frequency hop** (FH) signals parameters
with the single array. The existing optimization algorithms are with unrealistic computational …

Robust multi-frame joint frequency hop** radar waveform parameters estimation under low signal-noise-ratio

S Wei, M Zhang, G Wang, X Sun, L Zhang… - IEEE Access, 2019 - ieeexplore.ieee.org
Robust estimation of frequency hop** radar signal parameters is the key to achieving
stable jam in frequency hop** communication. In order to deal with the poor noise …