Výsledky vyhledávání - "Benoit Geller"

Low-Complexity Blind PAPR Reduction for OFDM Systems With Rotated Constellations

Publikováno v: IEEE Transactions on Broadcasting
IEEE Transactions on Broadcasting, Institute of Electrical and Electronics Engineers, 2021

International audience; The high Peak-to-Average Power Ratio (PAPR) of Orthogonal Frequency Division Multiplexing (OFDM) signals leads to a serious system performance degradation. To work around this issue, several algorithms have been proposed in th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::89ff04e8d917e7b25f8fdf41b7f5eed7
https://doi.org/10.1109/tbc.2021.3056232

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Adaptive Step-size Iterative Equalization for Underwater Communication

Autor: Zi Ye, Tarak Arbi, Benoit Geller

Publikováno v: IEEE Oceans 21
IEEE Oceans 21, Sep 2021, San Diego, United States

International audience; This paper presents a fully adaptive Minimum Mean Square Error (MMSE) iterative equalization with a joint phase estimation, using various adaptive step-sizes scheme. To meet the requirement of fast convergence and low MSE over

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f4530a1612cf0a21d8f00ec090f7dcbb
https://hal.archives-ouvertes.fr/hal-03426901/document

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Joint BER Optimization and Blind PAPR Reduction of OFDM Systems With Signal Space Diversity

Autor: Tarak Arbi, Benoit Geller

Publikováno v: IEEE Communications Letters
IEEE Communications Letters, Institute of Electrical and Electronics Engineers, 2019, ⟨10.1109/LCOMM.2019.2931898⟩

International audience; This letter deals with a Peak-to-Average Power Ratio (PAPR) reduction scheme for Orthogonal Frequency Division Multiplexing (OFDM) systems with Signal Space Diversity. An original algorithm for the selection of two Rotated and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e591036d9fd3867ef012809041676acd
https://doi.org/10.1109/lcomm.2019.2931898

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Joint dynamic delay and channel gain estimation BCRB for wireless communications

Autor: Tarak Arbi, Imen Hamdi Nasr, Sofiane Cherif, Leila Najjar Atallah, Benoit Geller

Publikováno v: 2020 16th International Conference on Wireless and Mobile Computing, Networking and Communications (WiMob)
WIMOB, International Conference on Wireless and Mobile Computing, Networking and Communications
WIMOB, International Conference on Wireless and Mobile Computing, Networking and Communications, IEEE, Oct 2020, Thessaloniki, Greece. ⟨10.1109/WiMob50308.2020.9253427⟩
WiMob
16th International Conference on Wireless and Mobile Computing, Networking and Communications (WiMob 2020)
16th International Conference on Wireless and Mobile Computing, Networking and Communications (WiMob 2020), IEEE, Oct 2020, Thessalonique, Greece. ⟨10.1109/WiMob50308.2020.9253427⟩

International audience; In this paper, we derive the analytical expression of the Bayesian Cramer-Rao Bound (BCRB) for the joint estimation of random time delay and channel gains. The BCRB is evaluated for the Rayleigh fading channel for both Data-Ai

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::20db707d54daf0d649a3a19122a40e59
https://hal.archives-ouvertes.fr/hal-03183658/file/Joint-dynamic-delay-and-channel-gain-estimation-BCRB-for-wireless-communications.pdf

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Near Capacity RCQD Constellations for PAPR Reduction of OFDM Systems

Autor: Tarak Arbi, Imen Hamdi Nasr, Benoit Geller

Publikováno v: ICASSP
ICASSP 2020-2020 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)
ICASSP 2020
ICASSP 2020, May 2020, Barcelona, France. ⟨10.1109/ICASSP40776.2020.9053923⟩

International audience; We investigate an optimized blind SeLected Mapping (SLM) algorithm to reduce the Peak-to-Average Power Ratio (PAPR) for Orthogonal Frequency Division Multiplexing (OFDM) systems with Signal Space Diversity (SSD). Several phase

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ad99eb2f282f7eb7afd16f61a1a602dd
https://doi.org/10.1109/icassp40776.2020.9053923

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Low complexity Adaptive Turbo Equalization for Multipath Underwater Communication

Autor: Benoit Geller, Zi Ye, Tarak Arbi

Publikováno v: OCEANS 2019-Marseille
IEEE Oceans 2019
IEEE Oceans 2019, Jun 2019, Marseilles, France. ⟨10.1109/OCEANSE.2019.8866873⟩
OCEANS 2019-Marseille, Jun 2019, Marseille, France. pp.1-5, ⟨10.1109/OCEANSE.2019.8866873⟩

This paper deals with a receiver architecture where adaptive equalization and channel decoding are jointly performed in an iterative manner in order to both reduce intersymbol interference (ISI) and to recover phase error. To decrease the equalizatio

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1bf5c502dfce64f3fc6bc1e4a2cbd6d8
https://hal.archives-ouvertes.fr/hal-03467146/document

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Fast Soft Demapping for Underwater Acoustic Communications With Signal Space Diversity

Autor: Tarak Arbi, Zi Ye, Francois-Xavier Socheleau, Benoit Geller

Publikováno v: OCEANS 2018 : MTS/IEEE Charleston
OCEANS 2018 : MTS/IEEE Charleston, Oct 2018, Charleston, United States. ⟨10.1109/OCEANS.2018.8604747⟩
IEEE Oceans
Oceans 2018
Oceans 2018, Oct 2018, Charleston, United States
OCEANS 2018 MTS/IEEE Charleston

International audience; The underwater acoustic channel is time-varying with a particularly limited bandwidth. This makes reliable communications difficult to achieve and limits the information rate. The rotated constellation is an effective techniqu

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::89a0b513b909e0d0a816d411e5b29392
https://hal-imt-atlantique.archives-ouvertes.fr/hal-01894419

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Multi-standard Receiver for Medical IoT Sensor Networks

Autor: Benoit Geller, Tarak Arbi

Publikováno v: Challenges of the Internet of Things

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4cd15d7bb48e5de554a34dbdb5651b54
https://doi.org/10.1002/9781119549765.ch5

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Near MAP Dynamical Delay Estimator and Bayesian CRB for Coded QAM Signals

Autor: Leila Najjar Atallah, Imen Hamdi Nasr, Sofiane Cherif, Benoit Geller

Publikováno v: IEEE Transactions on Wireless Communications
IEEE Transactions on Wireless Communications, Institute of Electrical and Electronics Engineers, 2018

International audience; This paper presents an off-line algorithm for dy-namical time delay recovery for which the whole observation block is used. The time offset varies over the observation interval following a random walk model. The proposed synch

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fc26e7343bbc1fcc683f7db244a14c56

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Uniformly Projected RCQD QAM: A Low-Complexity Signal Space Diversity Solution over Fading Channels With or Without Erasures

Autor: Jianxiao Yang, Tarak Arbi, Benoit Geller, Olivier Rioul, Charbel Abdel Nour

Publikováno v: IEEE Transactions on Broadcasting
IEEE Transactions on Broadcasting, Institute of Electrical and Electronics Engineers, 2018, ⟨10.1109/TBC.2018.2811618⟩

Rotated and cyclic Q-delayed (RCQD) quadrature amplitude modulation provides signal space diversity and thus improves system performance over fading channels. However, previously published RCQD solutions were designed without fully considering the hi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a71c5f400b275f741a540ed8902f55ee
https://hal.archives-ouvertes.fr/hal-01756306

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