Zobrazeno 1 - 10
of 179
pro vyhledávání: '"Daniel Roviras"'
Publikováno v:
IEEE Access, Vol 9, Pp 114235-114245 (2021)
5th generation systems (5G) will be based on Orthogonal Frequency Division Multiplexing (OFDM) multicarrier modulation technique. This modulation has a very high Peak to Average Power Ratio (PAPR). This high PAPR is a drawback when nonlinear Power Am
Externí odkaz:
https://doaj.org/article/ae71aa4b0bad4723924a5c5adf1fa08f
Publikováno v:
IEEE Access, Vol 7, Pp 29441-29452 (2019)
This paper studies the performance of enhanced multicarrier waveforms in the presence of a nonlinear memoryless high power amplifier (HPA). In particular, we focus on the in-band non-linear distortions (NLD) and their effects on symbol-error-rate. Fi
Externí odkaz:
https://doaj.org/article/5323e03fadaf444b88d6fa3a6724d931
Publikováno v:
IEEE Access, Vol 7, Pp 25474-25484 (2019)
We investigate the peak-to-average power ratio (PAPR) reduction problem in orthogonal frequency-division multiplexing-based massive multi-user (MU) multiple-input multiple-output (MIMO) downlink systems. In this paper, we develop a downlink transmiss
Externí odkaz:
https://doaj.org/article/63375823938a481d91aff703b05f621f
Publikováno v:
IEEE Access, Vol 7, Pp 177164-177176 (2019)
The extremely diverse service requirements is an important challenge for the upcoming fifth-generation (5G) wireless communication technologies. Orthogonal frequency division multiplexing (OFDM)-based massive multiple-input multiple-output (MIMO) and
Externí odkaz:
https://doaj.org/article/e6fc34e25c114091ac8000e903816725
Autor:
Rafik Zayani, Hmaied Shaiek, Xinying Cheng, Xiaotian Fu, Christophe Alexandre, Daniel Roviras
Publikováno v:
IEEE Access, Vol 6, Pp 67665-67680 (2018)
This paper details an experimental testbed conceived for studying the capability of new multicarrier waveforms to accommodate 5G requirements. Testbed experiments are done with an implementation of cyclically prefixed orthogonal frequency division mu
Externí odkaz:
https://doaj.org/article/bc8d8c26ab534851beffb1ee40dd3090
Autor:
Yahia Medjahdi, Sylvain Traverso, Robin Gerzaguet, Hmaied Shaiek, Rafik Zayani, David Demmer, Rostom Zakaria, Jean-Baptiste Dore, Mouna Ben Mabrouk, Didier Le Ruyet, Yves Louet, Daniel Roviras
Publikováno v:
IEEE Access, Vol 5, Pp 26556-26581 (2017)
During the past few years, we are witnessing the emergence of 5G and its high-level performance targets. Waveform (WF) design is one of the important aspects for 5G that received considerable attention from the research community in recent years. To
Externí odkaz:
https://doaj.org/article/4d581cf14fc440f1abed61edbd02a13b
Publikováno v:
EURASIP Journal on Advances in Signal Processing, Vol 2009 (2009)
An accurate approach to compute the bit error rate expression for multiuser chaosbased DS-CDMA system is presented in this paper. For more realistic communication system a slow fading multipath channel is considered. A simple RAKE receiver structure
Externí odkaz:
https://doaj.org/article/fbf5a046c8204d928124223a2b2ffe63
Publikováno v:
EURASIP Journal on Wireless Communications and Networking, Vol 2008 (2008)
This paper presents adaptive predistortion techniques based on a feed-forward neural network (NN) to linearize power amplifiers such as those used in satellite communications. Indeed, it presents the suitable NN structures which give the best perform
Externí odkaz:
https://doaj.org/article/da15e4c9d8724cf6a21a41b83d39b421
Autor:
Salim Faci, Adda Ali-Pacha, Christophe Alexandre, Daniel Roviras, Hmaied Shaiek, Khaled Tahkoubit
Publikováno v:
2021 International Conference on Software, Telecommunications and Computer Networks (SoftCOM)
2021 International Conference on Software, Telecommunications and Computer Networks (SoftCOM), Sep 2021, Split, France. pp.1-5, ⟨10.23919/SoftCOM52868.2021.9559085⟩
SoftCOM
2021 International Conference on Software, Telecommunications and Computer Networks (SoftCOM), Sep 2021, Split, France. pp.1-5, ⟨10.23919/SoftCOM52868.2021.9559085⟩
SoftCOM
Linearization and peak to average power ration reduction are two classical operations when non-linear power amplifiers (PA) are used. If only PA linearization is considered, the high crest factor (PAPR) of the amplified signal causes saturation when
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::002f55927a72203eecf9482a06118e80
https://hal-cnam.archives-ouvertes.fr/hal-03389346
https://hal-cnam.archives-ouvertes.fr/hal-03389346
Publikováno v:
2021 International Conference on Software, Telecommunications and Computer Networks (SoftCOM)
2021 International Conference on Software, Telecommunications and Computer Networks (SoftCOM), Sep 2021, Split, France. pp.1-5, ⟨10.23919/SoftCOM52868.2021.9559120⟩
SoftCOM
2021 International Conference on Software, Telecommunications and Computer Networks (SoftCOM), Sep 2021, Split, France. pp.1-5, ⟨10.23919/SoftCOM52868.2021.9559120⟩
SoftCOM
Autoencoders have shown a great interest in digital communications in the last few years. Autoencoders based on deep neural network layers are able to generate the modulator at the emitter side together with the digital receiver matched to channel co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7b9e1f2bc0b1b72922e520198e26ae11
https://hal-cnam.archives-ouvertes.fr/hal-03389355
https://hal-cnam.archives-ouvertes.fr/hal-03389355