Results 21 to 30 of about 484,819 (300)

A Novel Frequency-Hopping Sequence for Covert Communication

open access: yesIEEE Access, 2017
In this paper, a novel frequency-hopping sequence with lower probability of detection is proposed for covert communication systems. By formulating and solving a constrained optimization problem, a probability vector aiming for covert communication is ...
Ben Ning, Lei Guan, Haiyan Huang
doaj   +1 more source

Low False Alarm and Narrow-Wide Band Compatible Signal Detection Algorithm Combining the Multiscale Wavelet Transform Extremum Detection With the Spectrum Energy Detection

open access: yesIEEE Access, 2023
A low false alarm and narrow-wide band compatible signal detection algorithm is proposed by combining the multiscale wavelet transform extremum detection with the spectrum energy detection. The signals with different bandwidths are detected at respective
Weiying Huang, Ren Wang
doaj   +1 more source

Detectability models for multiple access low-probability-of-intercept networks [PDF]

open access: yesIEEE Transactions on Aerospace and Electronic Systems, 2000
Increased demands for communications in the tactical battlefield have driven the development of multiple access low-probability-of-intercept (LPI) networks. Most detectability studies of LPI networks focus on the individual links of the network, in which the intercept and detectability calculations are conducted for a single network transmitter.
Prescott, Glenn Eugene, Mills, Robert F.
openaire   +2 more sources

Detection probability and density estimation of fin whales by a Seaglider [PDF]

open access: yes, 2022
Funding: Funding for this work was provided by Living Marine Resources Program Grant No. N39430-14-C-1435 and Office of Naval Research Grant No. N00014-15-1‐2142. S.F.
Matsuyama, Brian   +15 more
core   +1 more source

Quantum noise limited optical communication with low probability of detection [PDF]

open access: yes2013 IEEE International Symposium on Information Theory, 2013
We demonstrate the achievability of a square root limit on the amount of information transmitted reliably and with low probability of detection (LPD) over the single-mode lossy bosonic channel if either the eavesdropper's measurements or the channel itself is subject to the slightest amount of excess noise.
Boulat A. Bash   +3 more
openaire   +1 more source

Analog MIMO detection on the basis of Belief Propagation [PDF]

open access: yes, 2006
In this article we present the design of an analog detector for Multiple-Input Multiple-Output (NIMO) wireless systems, based on the well known Belief Propagation (BP) algorithm.
Koushik Maharatna   +7 more
core   +1 more source

Cooperative Anti-jamming Method of Data Link Based on Adaptive Threshold [PDF]

open access: yesJisuanji gongcheng, 2018
In order to enhance the anti-jamming capability of data link in low Signal to Noise Ratio(SNR) environment,this paper improves the energy detection method based on invariable threshold and proposes an adaptive threshold anti-jamming method based on ...
YANG Mu,CHEN Changxing,LING Yunfei,LIN Xing,WANG Xiaodong
doaj   +1 more source

Multiuser Detection For Asynchronous ARGOS Signals [PDF]

open access: yes, 2010
In this paper, we investigate the application of multiuser detection techniques to a Low Polar Orbit (LPO) mobile satellite used in the ARGOS system. These techniques are used to mitigate the multiple access interference in the uplink transmission of the
Calmettes, Thibaud   +4 more
core   +1 more source

Ultra-Low Sidelobe Waveforms Design for LPI Radar Based on Joint Complementary Phase-Coding and Optimized Discrete Frequency-Coding

open access: yesRemote Sensing, 2022
In this paper, in order to reduce the probability of the radar waveform intercepted by the passive detection system, the time-bandwidth product of the radar waveform is increased, and the detection probability of the radar waveform to the target is ...
Yuxiao Song   +5 more
doaj   +1 more source

Quantum-noise limited communication with low probability of detection

open access: yesCoRR, 2014
We demonstrate the achievability of a square root limit on the amount of information transmitted reliably and with low probability of detection (LPD) over the single-mode lossy bosonic channel if either the eavesdropper's measurements or the channel itself is subject to the slightest amount of excess noise. Specifically, Alice can transmit $\mathcal{O}(
Boulat A. Bash   +3 more
openaire   +2 more sources

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