logo EDITE Remi CHAUVAT
Identité
Remi CHAUVAT
État académique
Thèse en cours...
Sujet: Study and implementation of Widely Linear (WL) Receiver for Filter Bank based Multicarrier (FBMC-OQAM) modulations.
Direction de thèse:
Encadrement de thèse:
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Voisinage
Ellipse bleue: doctorant, ellipse jaune: docteur, rectangle vert: permanent, rectangle jaune: HDR. Trait vert: encadrant de thèse, trait bleu: directeur de thèse, pointillé: jury d'évaluation à mi-parcours ou jury de thèse.
Productions scientifiques
oai:hal.archives-ouvertes.fr:hal-01254988
How to make quasi-rectilinear signals (MSK, GMSK, OQAM) almost equivalent to rectilinear ones (BPSK, ASK) for widely linear filtering in the presence of CCI
International audience
Widely linear (WL) receivers are able to fulfill single antenna interference cancellation (SAIC) of one rectilinear (R) or quasi-rectilinear (QR) co-channel interference (CCI), a function which is operational in GSM handsets in particular. However, SAIC requires enhancements for QR signals, for both VAMOS standard, an evolution of GSM/EDGE standard, and FBMC-OQAM networks, which are candidate for 5G mobile networks. In this context, the purpose of this paper is twofold. The first one is to show that, contrary to what is accepted as true in the literature, QR signals are less efficient than R ones for conventional WL filtering in the presence of CCI. From this result and for QR signals, the second purpose is to propose a SAIC/MAIC enhancement, based on WL frequency shifted (FRESH) filtering, making QR signals almost equivalent to R ones
WSA 2015 : 19th International ITG Workshop on Smart Antennas https://hal.archives-ouvertes.fr/hal-01254988 WSA 2015 : 19th International ITG Workshop on Smart Antennas, Mar 2015, Ilmenau, Germany. pp.1 - 6, 2015ARRAY(0x7f03ff0a4588) 2015-03-03
oai:hal.archives-ouvertes.fr:hal-01254987
Widely linear FRESH receiver for SAIC/MAIC with frequency offsets
International audience
Widely linear (WL) receivers are able to fulfill single antenna interference cancellation (SAIC) of one rectilinear (R) (ASK, BPSK) or quasi-rectilinear (QR) (MSK, GMSK, OQAM) co-channel interference (CCI), a function which is operational in GSM handsets in particular. However, in most cases, SAIC technology loses its efficiency if the residual frequency offset (FO) of the CCI is above a very small fraction of the baud rate. It may be the case for airborne communications, due to high differential Doppler shifts. It may also be the case if we try to use SAIC/MAIC receivers to mitigate intrinsic inter-carrier interference (ICI) of FBMC-OQAM waveforms, which are candidate for 5G networks, and for which the ICI FO is equal to 50% of the (real) baud rate. In this context, the purpose of this paper is twofold. The first one is to extend, for an arbitrary propagation channel and from a MLSE-based approach, the SAIC/MAIC concept to R or QR signals with differential FO using WL FRESH filtering. The second one is to analyse both analytically and by simulations the impact of the residual CCI FO on the performance of the proposed SAIC/MAIC receiver
ISWCS 2015 : 12th International Symposium on Wireless Communication Systems https://hal.archives-ouvertes.fr/hal-01254987 ISWCS 2015 : 12th International Symposium on Wireless Communication Systems, Aug 2015, Bruxelles, Belgium. 2015ARRAY(0x7f03ff093c00) 2015-08-25
oai:hal.archives-ouvertes.fr:hal-01361100
Quasi-rectilinear (MSK, GMSK, OQAM) co-channel interference mitigation by three inputs widely linear fresh filtering
International audience
IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP) https://hal.archives-ouvertes.fr/hal-01361100 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), Apr 2015, Brisbane, Australia. 2015, Proceedings of IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP) 2015ARRAY(0x7f03ff093b40) 2015-04-19