Zobrazeno 1 - 10
of 22
pro vyhledávání: '"Otman Chakkor"'
Autor:
Olaya Jbari, Otman Chakkor
Publikováno v:
ITM Web of Conferences, Vol 48, p 03006 (2022)
Abstract—What matrix factorization methods do is reduce the dimensionality of the data without losing any important information. In this work, we present the Non-negative Matrix Factorization (NMF) method, focusing on its advantages concerning othe
Externí odkaz:
https://doaj.org/article/1a9b6221056947d19245b7a0e91eb352
Autor:
Nassim, Aarab Mohamed1 naarab@uae.ac.ma, Otman, Chakkor1 otman.chakkor@uae.ac.ma
Publikováno v:
Telkomnika. Feb2023, Vol. 21 Issue 1, p41-48. 8p.
Autor:
Nassim, Aarab Mohamed, Otman, Chakkor
Publikováno v:
International Journal of Microwave & Optical Technology; Jan2023, Vol. 18 Issue 1, p23-28, 6p
Publikováno v:
Analog Integrated Circuits and Signal Processing. 100:501-512
Datasets exist in real life in many formats (audio, music, image,...). In our case, we have them from various sources mixed together. Our mixtures represent noisy audio data that need to be extracted (features), compressed and analysed in order to be
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2958163b2698908a72d5a997f33851c0
https://doi.org/10.1007/s10470-019-01446-6
https://doi.org/10.1007/s10470-019-01446-6
Publikováno v:
ICECOCS
Cognitive Radio is an intelligent wireless communication system able of learning from the environment. It allows reusing of the radio resources available by users called Secondary Users without creating harmful interference with licensed users. Spect
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::79c0e1578a7bb4f94ff65e0090c86cf5
https://doi.org/10.1109/icecocs50124.2020.9314297
https://doi.org/10.1109/icecocs50124.2020.9314297
Publikováno v:
ICECOCS
The current trend in wireless communication systems is to transmit higher data rates and to guarantee high-quality services. This indicates the need to evolve new technologies to increase the capacity of the transmission channel. The use of MIMO syst
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f3c1e9052148a97fdc8217a4823b7b46
https://doi.org/10.1109/icecocs50124.2020.9314397
https://doi.org/10.1109/icecocs50124.2020.9314397
Autor:
Otman Chakkor, Houda Abouzid
The most heard sound exists as a mixture of several audio sources. All human beings have the ability to concentrate on a single source of their interest and ignore the other sources as disturbing background noise. To apply this powerful gift to a mac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::58743af3f310a0f67bf46c7e9b164ec0
https://doi.org/10.4018/978-1-7998-0117-7.ch007
https://doi.org/10.4018/978-1-7998-0117-7.ch007
Autor:
Otman Chakkor, Nabila Aoulass
NMF method aim to factorize a non-negative observation matrix X as the product X =G.F between two non-negative matrices G and F, respectively the matrix of contributions and profiles. Although these approaches are studied with great interest by the s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::be9401f8ec8d6d5699f9dac8adb01798
https://doi.org/10.4018/978-1-7998-0117-7.ch009
https://doi.org/10.4018/978-1-7998-0117-7.ch009
Publikováno v:
Lecture Notes in Networks and Systems ISBN: 9783030331023
Orthogonal frequency-division multiplexing (OFDM) effectively mitigates inter-symbol interference (ISI) caused by the delay spread of wireless channels. This paper describes the combination of MIMO system along with Orthogonal Frequency Division Mult
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fce68e3cb54bb123737483b2ed2a9759
https://doi.org/10.1007/978-3-030-33103-0_19
https://doi.org/10.1007/978-3-030-33103-0_19
Publikováno v:
Indonesian Journal of Electrical Engineering and Informatics (IJEEI). 7
In this paper we present the Design of Continuous Wave Terahertz photonic transmitter based on photodetector, THz antenna, and low-pass filter (LPF) and Direct Current “DC” Probe Bias. Before validating the whole system, we processed firstly with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3a78193db02a75af59d1d4f74b00e4a4
https://doi.org/10.11591/ijeei.v7i1.633
https://doi.org/10.11591/ijeei.v7i1.633