Jean-François HELARD
Jean-François HELARD
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Device for the transmission of digital data with at least two levels of protection and corresponding reception device
R Halbert-Lassalle, JF Helard, B Le Floch
US Patent 5,197,061, 1993
Device for the coherent demodulation of time-frequency interlaced digital data, with estimation of the frequency response of the transmission channel and threshold, and …
MD Castelain, MJF Helard, MB Le Floch, MJC Rault
US Patent 5,307,376, 1994
Linear MMSE detection technique for MC-CDMA
JF Hélard, JY Baudais, J Citerne
Electronics Letters 36 (7), 665-666, 2000
Method for the broadcasting of digital data, notably for radio broadcasting at high bit rate towards mobile receivers, with time-frequency interlacing and coherent demodulation
JF Helard, JM Lemesle, R Halbert-Lassalle, B Le Floch
US Patent 5,274,629, 1993
Multicarrier CDMA techniques for future wideband wireless networks
M Helard, R Le Gouable, JF Helard, JY Baudais
Annales des télécommunications 56 (5), 260-274, 2001
Spreading sequences for uplink and downlink MC‐CDMA systems: PAPR and MAI minimization
S Nobilet, JF Hélard, D Mottier
European Transactions on Telecommunications 13 (5), 465-474, 2002
An improved linear MMSE detection technique for multi‐carrier CDMA systems: comparison and combination with interference cancellation schemes
JY Baudais, JF Hèlard, J Citerne
European Transactions on Telecommunications 11 (6), 547-554, 2000
Adaptive spread-spectrum multicarrier multiple-access over wirelines
M Crussière, JY Baudais, JF Hélard
IEEE Journal on Selected Areas in Communications 24 (7), 1377-1388, 2006
Trellis coded orthogonal frequency division multiplexing for digital video transmission
JF Helard, B Le Floch
IEEE Global Telecommunications Conference GLOBECOM'91: Countdown to the New …, 1991
Performance of multicarrier CDMA technique combined with space-time block coding over Rayleigh channel
JM Auffray, JF Helard
IEEE Seventh International Symposium on Spread Spectrum Techniques and …, 2002
Peak-to-average power ratio reduction using second order cone programming based tone reservation for terrestrial digital video broadcasting systems
IM Mahafeno, Y Louët, JF Helard
IET communications 3 (7), 1250-1261, 2009
A novel data-aided channel estimation with reduced complexity for TDS-OFDM systems
M Liu, M Crussiere, JF Hélard
IEEE Transactions on Broadcasting 58 (2), 247-260, 2012
A pre-equalization technique for uplink MC-CDMA systems using TDD and FDD modes
S Nobilet, JF Helard
Proceedings IEEE 56th Vehicular Technology Conference 1, 346-350, 2002
Improving the capacity of future IEEE 802.11 high efficiency WLANs
I Jamil, L Cariou, JF Helard
2014 21st International Conference on Telecommunications (ICT), 303-307, 2014
SU/MU-MIMO in IEEE 802.11 ac: PHY+ MAC performance comparison for single antenna stations
G Redieteab, L Cariou, P Christin, JF Helard
Wireless Telecommunications Symposium 2012, 1-5, 2012
Design and implementation of MC-CDMA systems for future wireless networks
S Le Nours, F Nouvel, JF Hélard
EURASIP Journal on Advances in Signal Processing 2004 (10), 1-12, 2004
PHY+ MAC channel sounding interval analysis for IEEE 802.11 ac MU-MIMO
G Redieteab, L Cariou, P Christin, JF Helard
2012 International Symposium on Wireless Communication Systems (ISWCS), 1054 …, 2012
Multi-carrier symbol synchronization
JF Helard, P Combelles, D Castelain
US Patent 6,459,744, 2002
Efficient MAC protocols optimization for future high density WLANs
I Jamil, L Cariou, JF Hélard
2015 IEEE Wireless Communications and Networking Conference (WCNC), 1054-1059, 2015
Performance of the DVB-T2 system in a single frequency network: Analysis of the distributed Alamouti scheme
N Cornillet, M Crussiere, JF Hélard
2011 IEEE International Symposium on Broadband Multimedia Systems and …, 2011
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