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Carrier Frequency Offset Compensation for OFDMA Systems Using Circular Banded Matrices
(Planta Piloto de Ingeniería Química, 2013-07)
Orthogonal frequency division multiple access (OFDMA) is a multiuser communication technique that allocates to each user a set of orthogonal carriers. In the presence of carrier frequency offset (CFO) the orthogonality ...
A Cognitive Way to Access the Frequency Spectrum
(2013-07-05)
Cognitive radio (CR) is an emergent technology in wireless communication. It aims at improve considerably spectrum use by allowing dynamic spectrum access (DSA). The DSA can be performed in different ways, e.g. interweave ...
On confidence bands for time series problems in the time and frequency domains
(Institute of Mathematical Statistics, 2003-12)
The construction of (asymptotic) simultaneous confidence bands for some time series problems is studied, typically for the sample autocorrelogram and windowed spectral density estimate. The following approaches are explored: ...
A penalized time-frequency band feature selection and classification procedure for improved motor intention decoding in multichannel EEG
(IOP Publishing, 2019-02)
Objective. Motor imagery brain-computer interfaces (MI-BCIs) based on electroencephalography (EEG), a promising technology to provide assistance and support rehabilitation of neurological patients with sensorimotor ...
Design of a Dual-Band PIFA for Handset Devices and it SAR Evaluation
(Facultad de Ingeniería, 2016)
Characterization of cross frequency couplings produced by harmonic and non-harmonic frequency bands during seizure activity from intracerebral recordings in patients candidate to epilepsy surgery
(Society for Neuroscience, 2018)
Cross frequency coupling (CFC) phenomenon has been proposed to be functionally involved in neuronal communication, memory formation and learning. Besides, experimental findings have shown that phase-amplitude (PAC) and ...
Coherence and frequency in the reticular activating system (RAS)
(Elsevier, 2012-10)
This review considers recent evidence showing that cells in the reticular activating system (RAS) exhibit 1) electrical coupling mainly in GABAergic cells, and 2) gamma band activity in virtually all of the cells. Specifically, ...
Mechanism behind gamma band activity in the pedunculopontine nucleus
(Wiley, 2011-07)
The pedunculopontine nucleus (PPN), part of the reticular activating system, modulates waking and paradoxical sleep. During waking and paradoxical sleep, EEG responses are characterized by low-amplitude, high-frequency ...
Proliferation and bystander suppression induced by membrane and flagellar antigens of Trypanosoma cruzi.
(Universidad del Zulia, 2009)
Infinitely oscillating wavelets and a efficient implementation algorithm based the FFTWavelets infinitamente oscilantes y un eficiente algoritmo de implementación basado en la FFT
(Universidad de Costa Rica, Centro de Investigación en Matemática Pura y Aplicada (CIMPA), 2015)