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Mostrando publicaciones 11-19 de 19
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, ...
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 ...
Multiresolution speech enhancement based on proposed circular nested microphone array in combination with sub-band affine projection algorithm
(2020)
Speech enhancement is one of the most important fields in audio and speech signal processing. The speech enhancement methods are divided into the single and multi-channel algorithms. The multi-channel methods increase the ...
A VLC channel model for underground mining environments with scattering and shadowing
(2020)
Underground mining is an industry that preserves the miners' safety and efficiency in their work using wireless communication systems as a tool. In addition to communication links characterized by radio frequency signals, ...
Analysis of spectrum detection and decision using machine learning algorithms in cognitive mobile radio networks
(2021)
In this work, the performance of four Machine Learning Algorithms (MLAs) applied to Cognitive Mobile Radio Networks (CMRNs) are analyzed. These algorithms are Coalition Game Theory (CGT), Naive Bayesian Classifier (NBC), ...
Training strategies to minimize interchannel interference effects using supervised learning in gridless Nyquist-WDM systems
(2021)
The dynamism envisioned in future high-capacity gridless optical networks requires facing several challenges in distortion mitigation, such as the mitigation of interchannel interference (ICI) effects in any optical channel ...
Propagation features of visible light communication in underground mining environments
(2020)
Due to the problems that radio-frequency technology presents in hostile environments, especially in mining environments, other forms of more robust as well as efficient communication have been explored in recent years. ...
3D multiple sound source localization by proposed cuboids nested microphone array in combination with adaptive wavelet-based subband GEVD
(2020)
Sound source localization is one of the applicable areas in speech signal processing. The main challenge appears when the aim is a simultaneous multiple sound source localization from overlapped speech signals with an ...
OFDM tolerance to additive white Gaussian and laser phase noises in optical heterodyning systems accompanied by the feasible pilot-assisted equalization
(2020)
It is well known that the performance of orthogonal frequency division multiplexing (OFDM) is limited by phase noise, which depends on the laser linewidths for coherent-detection radio over fiber (RoF) systems. In this ...