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
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, J Lemesle, R Halbert-Lassalle, B Le Floch
US Patent 5,274,629, 1993
Linear MMSE detection technique for MC-CDMA
JF Hélard, JY Baudais, J Citerne
Electronics Letters 36 (7), 665-666, 2000
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
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
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
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
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
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
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
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
Multi-carrier symbol synchronization
JF Helard, P Combelles, D Castelain
US Patent 6,459,744, 2002
Performance of STBC MC-CDMA systems over outdoor realistic MIMO channels
F Portier, JY Baudars, JF Hélard
IEEE 60th Vehicular Technology Conference, 2004. VTC2004-Fall. 2004 4, 2409-2413, 2004
Data-aided channel estimation for turbo-PIC MIMO detectors
MA Khalighi, JJ Boutros, JF Hélard
IEEE communications letters 10 (5), 350-352, 2006
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