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Mostrando publicaciones 11-20 de 65
A multi-channel speech enhancement method based on subband affine projection algorithm in combination with proposed circular nested microphone array
(2021)
In this paper, a novel multi-channel speech enhancement system is introduced based on a proposed circular nested microphone array (C-NMA) in combination with subband affine projection algorithm (SB-APA). The multi-channel ...
ICI reduction by using the improved double-jump 1 pulse in MQAM-OFDM schemes
(2020)
Orthogonal frequency division multiplexing (OFDM) is sensitive to frequency offset since it causes inter-carrier interference (ICI). Frequency offset results from the receiver's crystal oscillator inaccuracy, Doppler spread, ...
The extreme learning machine algorithm for classifying fingerprints
(2020)
Fingerprint recognition is the most employed bio-metric method for identification and verification purposes. Fingerprint images are classified into five categories according to the morphology of their ridges, which decreases ...
Automatic recognition system for traffic signs in Ecuador based on faster R-CNN with ZFNet
(2022)
This research presents an application of the Deep Learning technology in the development of an automatic system detection of traffic signs of Ecuador. The development of this work has been divided into two parts, i) in ...
A novel frequency domain visible light communication (VLC) three-dimensional trilateration system for localization in underground mining
(2019)
A new visible light communication (VLC) system is proposed for localization in underground mining. Existent systems, such as global positioning system (GPS) and systems based on mobile communication, are generally not ...
Extreme learning machines to combat phase noise in RoF-OFDM schemes
(2019)
Radio-over-fiber (RoF) orthogonal frequency division multiplexing (OFDM) systems have been revealed as the solution to support secure, cost-effective, and high-capacity wireless access for the future telecommunication ...
All-optical routers modeled through the matrix method with NVidia CUDA development framework
(2019)
Optical packet switching (OPS) is a promising technology in order to satisfy the ever-increasing need for bandwidth. With this technology, data packets, which consist of a header and a payload, are assembled and transmitted ...
BER performance of OFDM-based visible light communication systems
(2019)
In this paper, OFDM-based techniques designed for Intensity Modulation/Direct Detection (IMDD) modulation applied to Visible Light Communications (VLC) systems are evaluated. The evaluated techniques are Asymmetrically ...
Multiclasificación de arritmias cardíacas usando unared neuronal y la tarjeta MyRio-1900
(2021)
Las enfermedades cardiovasculares (ECV) y en particular las arritmias cardíacas, se han convertidoen una de las principales causas de muerte en el mundo, sin importar el nivel de desarrollo de los países. Ladetección de ...
Evaluation of localization precision by proposed quasi-spherical nested microphone array in combination with multiresolution adaptive steered response power
(2020)
Multiple sound source localization in noisy and reverberant conditions is one of the important challenges in the speech signal processing. The aim of this article is three-dimensional sound source localization in undesirable ...