Results 21 to 30 of about 101,995 (301)
The communicative function of ambiguity in language [PDF]
Cognition, 2012 We present a general information-theoretic argument that all efficient communication systems will be ambiguous, assuming that context is informative about meaning. We also argue that ambiguity allows for greater ease of processing by permitting efficient linguistic units to be re-used.
Piantadosi, Steven T. +2 more
openaire +4 more sources
Remote Sensing, 2023 The extraction of the micro-Doppler (m-D) feature based on time-frequency distribution (TFD) is of great significance for target detection and identification.
Yang Yang +4 more
doaj +1 more source
Neural activity associated with the passive prediction of ambiguity and risk for aversive events [PDF]
, 2009 In economic decision making, outcomes are described in terms of risk (uncertain outcomes with certain probabilities) and ambiguity (uncertain outcomes with uncertain probabilities).
Dolan, R.J. +7 more
core +1 more source
Construction of Waveform Library in Cognitive Radar
Polish Maritime Research, 2017 Based on the thoughts of cognitive radar, Fractional Fourier Transform (FrFT) is used to generate a rotatable waveform libraries of Frank coded/Barker coded waveform in this paper.
Yongqiang Guo, Yumin Wu, Hui Liu
doaj +1 more source
Constrained Transmit Beampattern Design Using a Correlated LFM-PC Waveform Set in MIMO Radar
Sensors, 2020 This paper considers the design of a desired transmit beampattern under the good ambiguity function constraint using a correlated linear frequency modulation-phase coded (LFM-PC) waveform set in multiple-input-multiple-output (MIMO) radar. Different from
Sheng Hong +4 more
doaj +1 more source
On the ambiguity function for accelerating target in FMCW radar
Journal of Telecommunications and Information Technology, 2023 In the paper, we are concerned with FMCWradar detection of an accelerating target, echo of which is buried in an additive white Gaussian noise. We derive and analyze three-dimensional generalized ambiguity function for target range, velocity and ...
Rafał Rytel-Andrianik
doaj +1 more source
Random Access for Underwater Acoustic Cellular Systems
Sensors, 2018 In this paper, a random access preamble (RAP) design technique for underwater acoustic cellular systems is proposed. After showing that the conventional RAP used in long term evolution (LTE) systems is not appropriate for underwater acoustic cellular ...
Rothna Pec +3 more
doaj +1 more source
Coarse-to-Fine Localization of Underwater Acoustic Communication Receivers
Sensors, 2022 For underwater acoustic (UWA) communication in sensor networks, the sensing information can only be interpreted meaningfully when the location of the sensor node is known. However, node localization is a challenging problem.
Pan He +3 more
doaj +1 more source
Joint Time-Frequency-Space Classification of EEG in a Brain-Computer Interface Application
EURASIP Journal on Advances in Signal Processing, 2003 Brain-computer interface is a growing field of interest in human-computer interaction with diverse applications ranging from medicine to entertainment.
Molina Gary N Garcia +2 more
doaj +1 more source
FDSS-Based DFT-s-OFDM for 6G Wireless Sensing
Sensors, 2023 Integrated sensing and communications (ISAC) is emerging as a key technology of 6G. Owing to the low peak-to-average power ratio (PAPR) property, discrete Fourier transform spread orthogonal frequency-division multiplexing (DFT-s-OFDM) is helpful to ...
Lu Chen +5 more
doaj +1 more source