Results 81 to 90 of about 822,606 (159)

Mitigation of Side-Effect Modulation in Optical OFDM VLC Systems

open access: yes, 2018
Side-effect modulation (SEM) has the potential to be a significant source of interference in future visible light communication (VLC) systems. SEM is a variation in the intensity of the light emitted by a luminaire and is usually a side-effect caused by ...
Armstrong, Jean   +2 more
core   +1 more source

Number Theoretic Transforms for Secure Signal Processing [PDF]

open access: yesarXiv, 2016
Multimedia contents are inherently sensitive signals that must be protected whenever they are outsourced to an untrusted environment. This problem becomes a challenge when the untrusted environment must perform some processing on the sensitive signals; a paradigmatic example is Cloud-based signal processing services.
arxiv  

Logical Signal Processing: a Fourier Analysis of Temporal Logic [PDF]

open access: yesarXiv, 2020
What is the frequency content of temporal logic formulas? That is, when we monitor a signal against a formula, which frequency bands of the signal are relevant to the logic and should be preserved, and which can be safely discarded? This question is relevant whenever signals are filtered or compressed before being monitored, which is almost always the ...
arxiv  

A Survey on Wireless Security: Technical Challenges, Recent Advances and Future Trends

open access: yes, 2016
This paper examines the security vulnerabilities and threats imposed by the inherent open nature of wireless communications and to devise efficient defense mechanisms for improving the wireless network security.
Hanzo, Lajos   +3 more
core   +1 more source

Imperfect Digital Fibre Optic Link Based Cooperative Distributed Antennas with Fractional Frequency Reuse in Multicell Multiuser Networks

open access: yes, 2011
The achievable throughput of the entire cellular area is investigated, when employing fractional frequency reuse techniques in conjunction with realistically modelled imperfect optical fibre aided distributed antenna systems (DAS) operating in a ...
Ghafoor, Salman   +3 more
core  

Automated tuning of inter-dot tunnel couplings in quantum dot arrays

open access: yes, 2018
Semiconductor quantum dot arrays defined electrostatically in a 2D electron gas provide a scalable platform for quantum information processing and quantum simulations.
Buijtendorp, B. T.   +7 more
core   +2 more sources

Unified Heat Kernel Regression for Diffusion, Kernel Smoothing and Wavelets on Manifolds and Its Application to Mandible Growth Modeling in CT Images [PDF]

open access: yes, 2015
We present a novel kernel regression framework for smoothing scalar surface data using the Laplace-Beltrami eigenfunctions. Starting with the heat kernel constructed from the eigenfunctions, we formulate a new bivariate kernel regression framework as a ...
Chung, Moo K.   +3 more
core  

Enhanced Signal Recovery via Sparsity Inducing Image Priors [PDF]

open access: yesarXiv, 2018
Parsimony in signal representation is a topic of active research. Sparse signal processing and representation is the outcome of this line of research which has many applications in information processing and has shown significant improvement in real-world applications such as recovery, classification, clustering, super resolution, etc.
arxiv  

CT diagnosis of early stroke : the initial approach to the new CAD tool based on multiscale estimation of ischemia [PDF]

open access: yes, 2009
Background: Computer aided diagnosis (CAD) becomes one of the most important diagnostic tools for urgent states in cerebral stroke and other life-threatening conditions where time plays a crucial role.
Bulski, Tomasz   +4 more
core  

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