Results 11 to 20 of about 621,593 (377)
Deep Learning-Enabled Semantic Communication Systems With Task-Unaware Transmitter and Dynamic Data [PDF]
IEEE Journal on Selected Areas in Communications, 2022 Existing deep learning-enabled semantic communication systems often rely on shared background knowledge between the transmitter and receiver that includes empirical data and their associated semantic information.
Hongwei Zhang +4 more
semanticscholar +1 more source
Transmitter and Receiver Window Designs for Orthogonal Time-Frequency Space Modulation [PDF]
IEEE Transactions on Communications, 2020 In this paper, we investigate the impacts of transmitter and receiver windows on the performance of orthogonal time-frequency space (OTFS) modulation and propose window designs to improve the OTFS channel estimation and data detection performance.
Zhiqiang Wei +4 more
semanticscholar +1 more source
Open Set Wireless Transmitter Authorization: Deep Learning Approaches and Dataset Considerations [PDF]
IEEE Transactions on Cognitive Communications and Networking, 2020 Due to imperfections in transmitters’ hardware, wireless signals can be used to verify their identity in an authorization system. While deep learning was proposed for transmitter identification, existing work has mainly focused on classification among a ...
Samer S. Hanna +2 more
semanticscholar +1 more source
Programmable metasurface‐based RF chain‐free 8PSK wireless transmitter [PDF]
Electronics Letters, 2019 In this Letter, a wireless transmitter using the new architecture of programmable metasurface is presented. The proposed transmitter does not require any filter, nor wideband mixer or wideband power amplifier, thereby making it a promising hardware ...
Wankai Tang +7 more
semanticscholar +1 more source
Co‐operative action of calcium ions in transmitter release at the neuromuscular junction
Journal of Physiology, 1967 F. A. Dodge, R Rahamimoff
openalex +3 more sources
Dopamine: an immune transmitter
Neural Regeneration Research, 2020 The dopaminergic system controls several vital central nervous system functions, including the control of movement, reward behaviors and cognition. Alterations of dopaminergic signaling are involved in the pathogenesis of neurodegenerative and psychiatric disorders, in particular Parkinson's disease, which are associated with a subtle and chronic ...
Thomas Broome, Sarah +5 more
openaire +5 more sources
The Journal of Engineering, 2014 In this study, the authors consider time-varying block (TVB) codes, which generalise a number of previous synchronisation error-correcting codes. They also consider various practical issues related to maximum a posteriori (MAP) decoding of these codes ...
Johann A. Briffa +2 more
doaj +1 more source
Micromachines, 2020 In this study, we propose an eight-channel monolithic optical transmitter using silicon electro-absorption modulators (EAMs) based on free-carrier injection by Schottky junctions. The transmitter consists of a 1 × 8 silicon arrayed-waveguide grating (AWG)
Uiseok Jeong +3 more
doaj +1 more source
A high Q piezoelectric resonator as a portable VLF transmitter
Nature Communications, 2019 Very low frequency communication systems (3 kHz–30 kHz) enable applications not feasible at higher frequencies. However, the highest radiation efficiency antennas require size at the scale of the wavelength (here, >1 km), making portable transmitters ...
M. Kemp +6 more
semanticscholar +1 more source
Optimal Offline and Competitive Online Strategies for Transmitter-Receiver Energy Harvesting [PDF]
, 2014 Transmitter-receiver energy harvesting model is assumed, where both the transmitter and receiver are powered by random energy source. Given a fixed number of bits, the problem is to find the optimal transmission power profile at the transmitter and ON ...
Nagda, Rushil +2 more
core +2 more sources