Raphaël Visoz Research Engineer Digital Communications/Radio Networks

 

Contact:

Raphael VISOZ

France Telecom Div. R&D

38-40, rue du Général-Leclerc

F-92794 Issy Moulineaux Cedex 9

Email: raphael.visoz@orange.com

Tel: +33(0)145296405

Tel: +33(0)630097623

Fax: +33(0)145294194

 

 

 

Short biography (IEEE style):

Raphael Visoz was born in Grenoble, France, in 1972. He received the preliminary doctorate certificate (DEA) in Theoretical Physics from Ecole Normale Supérieure (ENS) de Lyon, France, in 1995 and the Dipl. Ing. in Telecommunications from TELECOM Bretagne, Brest, France, in 1997, including a Mobile Communication specialization at Eurécom, Sophia Antipolis, France. He received his Ph. D. degree in Digital Communications from the Ecole Nationale Supérieure des Télécommunications (ENST), Paris, France, in February 2002. He received his Accreditation to Supervise Research (Habilitation à Diriger des Recherches)  from the University Pierre et Marie Curie, Paris 6, France, in September 2006. He was elevated to Senior Member of IEEE and SEE in 2008. Since November 1997, he has been working for France Telecom R&D, Issy Les Moulineaux, France in the field of third generation (and beyond) mobile radio systems. From 2003 to 2006, he was a project manager responsible for research activities on UTRAN evolutions. From 2006 to 2007, he was in charge of research activities on Cross Layer Optimization for future wireless systems. Since 2007, he is responsible for the technical steering of the Orange Labs research project on 4G wireless systems. His research interests include network information theory, cross layer optimization, MIMO systems, space-time coding, detection theory, iterative decoding on graphs, space-time turbo-processing, multi-user detection, equalization and channel estimation. He is author or co-author of about fifty articles in refereed journals and conference proceedings and owns 25 patents in the field of digital communications.

Journal papers:

 

[J-1] R. Visoz and E. Bejjani, « Matched Filter Bound for Multichannel Diversity over Frequency-Selective Rayleigh-Fading Mobile Channels,» IEEE Trans. on Veh. Technol., vol. 49, No. 5, pp. 1832-1845, Sept. 2000 (pdf).

 

[J-2] A.O Berthet, B. Ünal, and R. Visoz, « On Iterative Decoding of Trellis-Encoded Signals over Multipath Rayleigh Fading Channels,» IEEE J. Sel. Areas Commun., Special Issue on Turbo-Principle II, vol.19, no. 9, pp. 1729-1743, Sept. 2001 (pdf).

 

[J-3] R. Visoz, P. Tortelier, and A.O Berthet, « A Generalized Viterbi Algorithm for Trellis Coded Signals transmitted through Broadband Wireless Channels,» IEE Electron. Lett., pp. 227-228, March 2000 (pdf).

 

[J-4] R. Visoz and A.O. Berthet, «Iterative Decoding and Channel Estimation for Space-Time BICM over MIMO Block Fading Multipath AWGN Channel,» IEEE Trans. Commun., vol. 51, no. 8, pp. 1358-1367 , Aug.2003 (pdf) .

 

[J-5] N. Nefedov, M. Pukkila, R. Visoz, and A.O. Berthet, «Iterative Equalization and Estimation for Advanced TDMA Systems,» (co-operation with Nokia), IEEE Trans. Commun., pp. 141-144,  Febr. 2003 (pdf).

 

[J-6] A.O. Berthet and R. Visoz, «Iterative Decoding of concatenated Layered Space Time Trellis Codes on MIMO Block Fading Multipath AWGN Channel,» IEEE Trans. Commun. , vol 51. , no. 6, pp. 940-952, June 2003 (pdf) .

 

[J-7] N. Nefedov, M. Pukkila, R. Visoz, and A.O. Berthet, « Iterative Receiver Concept for TDMA Packet Data Systems,» European Trans. on Telecommun., vol. 14, pp. 457-469, Sept-Oct. 2003  (pdf).

 

[J-8] H. Boujemaa, R. Visoz, and A.O. Berthet «Iterative Low-Complexity Receiver for the UMTS downlink, » Annals of Telecommun., Vol. 59, no. 5-6, May-June 2004 (pdf)

 

[J-9] R.Visoz, A.O. Berthet, and S. Chtourou, "A new Class  of Iterative Equalizers for Space-Time BICM over MIMO Block Fading ISI AWGN Channel," IEEE Trans. Commun , vol. 53,  no. 12,  pp. 2076 – 2091,  Dec. 2005  (pdf) .

[J-10] R. Visoz, A.O. Berthet, and S. Chtourou, "Frequency Domain Block Turbo-Equalization for Single-Carrier Transmission over MIMO Broadband Wireless Channel," IEEE Trans. Commun., vol. 54, no. 12, Dec. 2006 (pdf) .

[J-11] R. Visoz, A.O. Berthet, and N. Gresset, "Advanced Transceiver Architectures for Downlink MIMO CDMA Evolution," IEEE Trans. Wireless Commun , vol. 6, no. 8, August 2007 (pdf).

[J-12] S. Lasaulce, J.Dumont, R. Mohammad-Khani, and R.Visoz, "Dirty paper coding schemes for MIMO broadcast channels," Annals of Telecommun., Sept.-Oct. 2007, (pdf)

[J-13] S. Chtourou, R. Visoz, and A.O. Berthet, "A Comparison Analysis of Pre-filtering Methods in Reduced-State Trellis-Based Space-Time Turbo-Detection" Annals of Telecommun.,” vol. 63, no. 7-8, pp. 379-392, Aug. 2008 (pdf).

[J-14] P. Layec, R. Visoz, and A.O. Berthet, "Sum Discrete-Rate Maximization with Rate and Power Control in Layered Space-Time Coding," IEEE Trans. Commun., vol. 57, no. 3 , pp. 789-800, March 2009 (pdf)

[J-15] Mohamed Et-tolba, Samir Saoudi, Raphael Visoz, and Tarik Ait-Idir, “Chip-Level HARQ Chase Combining for HSUPA” Research Letters in Communications, vol. 2009, Article ID 230276, 4 pages, 2009. doi:10.1155/2009/230276 (pdf).

[J-16] R. Visoz, A.O. Berthet, and M. Lalam, "Semi-Analytical Performance Prediction Methods for Iterative MMSE-IC Multiuser MIMO Joint Decoding," IEEE Trans. Commun., vol. 58, no. 9, Sept. 2010 (pdf).

Patents

 

Click here to download one of the patents in French FR-esp@cenet

 

 

Conference papers:

 

[C-1] R. Visoz, E. Bejjani, and V. Kumar, « Matched Filter Bound for Equalization and Antenna Diversity over Mobile Radio Channels,» Proc. IEEE  ICUPC'98, Florence, Italy, Oct. 1998.

 

[C-2] A.O Berthet, R. Visoz, B. Ünal, and P. Tortelier, « A Comparison of Several Strategies for Iteratively Decoding Serially Concatenated Convolutional Codes in Multipath Rayleigh Fading Environment, » Proc. IEEE GLOBECOM'00, San Francisco, California, USA, Dec. 2000.

 

[C-3] R. Visoz, A.O. Berthet, and P. Tortelier, « Joint Equalization and Decoding of Trellis-Encoded Signals using the Generalized Viterbi Algorithm ,» Proc. IEEE VTCF'00, Boston, Massachusetts, USA, Sept. 2000.

 

[C-4] A.O Berthet, R. Visoz, and P. Tortelier, « Turbo-Equalization for Coded 8-PSK Signals over ISI Channels with application to EDGE Advanced Mobile System, » Proc. IEEE PIMRC'00, London, UK, Sept. 2000.

 

[C-5] R. Visoz, A.O. Berthet, A. Saadani, and B. penther, «Turbo Equalization and Incremental Redundancy for advanced TDMA systems ,»  Proc. IEEE VTCS'01, Rhodes, Greece, May 2001.

 

[C-6] A.O Berthet, B. Penther, R. Visoz, and J. Boutros, « A new reduced complexity Turbo detector for highly selective long delay spread ISI channels : a solution for 4G Mobile Systems ? ,» Proc. IEEE VTCS'01, Rhodes, Greece, May 2001.

 

[C-7] B. Ünal, A.O. Berthet, and R. Visoz, « Iterative Channel Estimation and Coded Symbol Detection for Dispersive Channels ,» Proc. IEEE PIMRC'01, San Diego, California, USA, Oct. 2001.

 

[C-8] A.O. Berthet, R. Visoz, and B. Ünal, « Iterative Decoding of Serially Concatenated Multilayered Trellis Coded Modulations in the presence of InterSymbol Interference and Noise,» Proc. IEEE GLOBECOM'01, San Antonio, Texas, USA, Nov. 2001.

 

[C-9] H. Boujemaa, R. Visoz, and A.O. Berthet, «Rake-DFSE (Decision Feedback Sequence Estimator) Equalizer for the UMTS Downlink,» Proc. IEEE VTCS'02, Birmingham, Alabama, USA, May 2002.

 

[C-10] H. Boujemaa, M. Siala, and R. Visoz, «Multipath diversity and power control,» Proc. IEEE VTCS'02, Birmingham, Alabama, USA, May 2002.

 

[C-11] R. Visoz, A.O. Berthet, and J. Boutros, «Reduced-complexity iterative decoding andchannel estimation for space time BICM over frequency-selective wireless channels,»  Proc. IEEE PIMRC'02, Lisbon, Portugal, Sept. 2002.

 

[C-12] A.O. Berthet, R. Visoz, and J. Boutros, «Space-Time BICM versus Space-Time Trellis Code for MIMO Block Fading Multipath AWGN Channel,» Proc. IEEE ITW'03, Paris, France, March 2003.

 

[C-13] S. Chtourou, R. Visoz, and A.O. Berthet, «Whitening Matched Filtering versus Channel Shortening Front Ends for Iterative Trellis-Based MIMO Receivers,» Proc. IEEE VTCS'04 , Milan, Italy, May 2004.

 

[C-14] R. Visoz, A.O. Berthet, and S. Chtourou, «A Novel Approach to Iteratively Equalizing Space-Time BICM over MIMO Fading ISI Channel,» Proc. ISIVC'04, Brest, France, July 2004.

 

[C-15] S. Chtourou, R. Visoz, and A.O. Berthet, «A Class of Low Complexity Iterative Equalizers for Space-Time BICM over MIMO Block Fading Multipath AWGN Channel,» Proc. IEEE ICC'04, Paris, France, June 2004.

 

[C-16] A.O. Berthet, R. Visoz, and S. Chtourou, «Efficient MMSE-based Turbo-Decoding of Space-Time BICM over MIMO Block Fading ISI Channel with Imperfect CSIR,» Proc. IEEE PIMRC'04, Barcelona, Spain, Sept. 2004.

 

[C-17] R. Visoz, A.O. Berthet, and S. Chtourou, «Efficient MMSE-based Turbo-Decoding of Space-Time BICM over MIMO Block Fading ISI Channel,» Proc. IEE 3G'04, London, UK, Oct. 2004.

 

[C-18] A.O. Berthet,  R. Visoz, and M. Pourmir, "Cooperative Decoding and Channel Estimation for Superimposed Space-Time Interleaved Coded Signals,"  Proc. IEEE PIMRC'05, Berlin, Germany, Sept. 2005.

 

[C-19] R. Visoz, A.O. Berthet, and S. Chtourou, "A Novel Frequency Domain Turbo-Equalizer for STBICM over MIMO ISI Channel," Proc. IEE B3G'05, London, UK, Nov. 2005.

 

[C-20] R. Visoz, S. Chtourou, and A.O. Berthet, "Turbo-Equalization for Single-Carrier Transmission over MIMO Broadband Wireless Channel: Performance/complexity trade-offs," Proc. IEEE ISCCSP'06, Marrakech, Morocco, March 2006 (invited paper).

 

[C-21] M. Et-Tolba, M. Ammar, S. Saoudi, and R. Visoz, "A Simplified Simulator of the Rake Receiver in the HSDPA System," Proc. IEEE ISCCSP'06, Marrakech, Morocco, March 2006.

 

[C-22] R. Visoz, A.O. Berthet, and N. Gresset, "Turbo Space-Time Chip Equalizer and Channel Estimation for Overloaded MIMO HSDPA," Proc. IEEE ICC'06,  Istanbul, Turkey, June 2006.

 

[C-23] R. Visoz, A.O. Berthet, and N. Gresset, "Iterative (Turbo) Blind and Semi-Blind Intracell Interference Cancellation for MIMO Downlink CDMA," Proc. IEEE SPAWC'06, Cannes, France, July 2006.

 

[C-24] R. Visoz, A.O. Berthet, and N. Gresset, "Iterative Receiver Architecture for MIMO HSDPA Evolution," Proc. IEEE WIMOB'06, Montréal, Canada, June 2006.

 

[C-25] S. Chtourou, A.O. Berthet, and R. Visoz, "Efficient Doubly-Iterative Frequency-Domain Turbo-Equalizer For Single Carrier Transmission Over MIMO ISI  Channel," Proc. IEEE WIMOB'06, Montréal, Canada, June 2006.

 

[C-26] P. Layec, R. Visoz, and A.O. Berthet, "Achieving High Spectral Efficiency with Adaptive Layered Space Time Codes under Rate Control," Proc. IEEE ICC 2007, Glasgow, Scotland, June 2007.

 

[C-27] P. Layec, R. Visoz, and A.O. Berthet, "Joint Transmit Antenna Selection and Rate Adaptation for Spatial Multiplexing Systems with Limited Feedback," Proc. IEEE VTCF’07, Baltimore, MD, USA, Sept./Oct. 2007.

 

[C-28] P. Layec, P. Piantanida, R. Visoz, and A. O. Berthet, "Capacity Bounds for MIMO Multiple Access Channel with Imperfect Channel State Information," Proc. IEEE ITW'08, Porto, Portugal,  May 2008.

 

[C-29] P. Layec, P. Piantanida, R. Visoz, A.O. Berthet, "Capacity of Channels with Multistage Successive Refinement of Quantized Feedback Information via Noisy Links," Proc. IEEE SPAWC'08, Recife, Brazil, July 2008.

 

[C-30] P. Layec, R. Visoz, and A.O. Berthet, "Partial Waterfilling with Reduced Feedback for Sum Discrete-Rate Maximization in SU-MIMO," Proc. IEEE PIMRC'08, Cannes, France, Sept. 2008.

 

[C-31] A. Cipriano, R. Visoz, and T. Salzer,  "Calibration Issues of PHY Layer Abstractions for Wireless Broadband Systems," Proc. IEEE VTCF'08, Calgary, Canada, Sept. 2008.

 

[C-32] R. Visoz, A.O. Berthet, and M. Lalam, "A Novel Fast Semi-Analytical Performance Prediction Method for Iterative MMSE-IC Multiuser MIMO Joint Decoding," Proc. IEEE Globecom'08, New Orleans, LA, USA, Dec. 2008.

 

[C-33] M. Lalam, R. Visoz, and A.O. Berthet, "A Fast Prediction Method to Optimize the Complexity-Performance-Latency Trade-off in Link Adaptation," Proc. IEEE ISWCS'08, Reykjavik, Iceland, Oct. 2008.

 

[C-34] R. Visoz, M. Lalam, and A.O. Berthet, "Binary versus symbolic performance prediction methods for Iterative MMSE-IC Multiuser MIMO Joint Decoding," Proc. IEEE SPAWC 09, Perugia, Italy, June 2009.

 

[C-35] M. Lalam, R. Visoz, and A.O. Berthet, "Fast Performance Prediction of Iterative MMSE-IC Receivers in MU-MIMO CDMA Systems," Proc. IEEE VTC'09, Anchorage, Alaska, USA, sept. 2009.

 

[C-36] A.O. Berthet and R. Visoz,  "Sum-Product Decoding of Layered Space-Time Trellis Coded Signals over MIMO Fading Multipath Channels," Proc. IEEE PIMRC'09, Tokyo, Japan,  sept. 2009.

 

[C-37] M. Et Tolba , S. Saoudi, R. Visoz, T. Ait Idir , " Chip-level LMMSE based HARQ Chase Combining for HSUPA in Proc. IEEE VTC'09, Barcelona,  Spain, April  2009.

 

[C-38] A. Hatefi, R. Visoz, and A.O. Berthet, “Joint channel-network coding for the semi orthogonal multiple access relay channel,” Proc. IEEE VTC-Fall’10 , Ottawa, Canada, Sept. 2010.

 

[C-39] A. Hatefi, R. Visoz, and A.O. Berthet, “Joint channel-network turbo coding for the non orthogonal multiple access relay channel,” Proc. IEEE PIMRC’10, Istanbul, Turkey, Sept. 2010.

 

[C-40] A. Hatefi, R. Visoz, and A.O. Berthet, “Relaying functions for the multiple access relay channel,” Proc. 6th International Symposium on Turbo Codes, Brest, France, Sept. 2010.

 

[C-41] H. Schoeneich, P. Marsch, M. Grieger, R. Visoz, W. Zirwas, L. Yang " Advanced interference management in ARTIST4G: Interference exploitation," Wireless Technology Conference (EuWIT), Paris, France, Sept. 2010.

 

[C-42] A. Hatefi, R. Visoz, and A. Berthet, “Joint network-channel distributed coding for the multiple access full duplex relaychannel,” Proc. IEEE ICUMT’10, Moscow, Russia, 2010.

 

[C-43] B. Ning, R. Visoz, A.O. Berthet, “Semi-Analytical Performance Prediction Method for Iterative MMSE-IC Detection and Semi-blind Channel Estimation,” Proc. IEEE VTC’11 Spring, Hungrary, Budapest, May 2011

 

 

International Workshops and Seminars:

 

S. Chtourou, R. Visoz, and A.O. Berthet "A Class of Low Complexity Iterative Equalizers for Space-Time BICM over MIMO Block Fading Multipath AWGN Channel," 3rd MCM COST 289, Kosice, Slovakia, Oct. 2003

 

R. Visoz, A.O. Berthet, and S. Chtourou, "On the Performance of Space-Time BICM over MIMO Block Fading ISI Channel: Efficient MMSE-based Turbo Decoding," WWRF 12, Toronto, Canada, Nov. 2004.

 

A.O. Berthet, R. Visoz, and S. Chtourou "Efficient MMSE-based Turbo-Decoding of Space-Time BICM over MIMO Block Fading ISI Channel with Imperfect CSIR," 1st NEWCOM meeting, Department 1, 25th June 2004.

 

S. Chtourou, R. Visoz, and A. O. Berthet, "Whitened Matched Filter versus Channel Shortening for ST-BICM over MIMO ISI Channels," 5th MCM of COST 289, Budapest, Hungary, July 2004.

 

R. Visoz, A.O. Berthet, and S. Chtourou," Frequency Domain Turbo-Equalizer for Serial Modulation Transmitted over MIMO Broadband Wireless Channel ," WWRF14, San Diego, July 2005.

 

R.Visoz, S. Chtourou, and A.O. Berthet, "Turbo-Equalization for Single-Carrier Transmission over MIMO Broadband Wireless Channel: Performance/Compexity Trade-Offs ," 10th MCM COST 289, Novi Sad, Serbia, March 2006.

 

R. Visoz, A.O.Berthet, and M. Lalam, "A Fast Prediction Method to Optimize Link Adaptation for Interference Cancellation Receivers" WWRF21, Stockholm, Sweden, Oct. 2008.

 

M. Lalam, R. Visoz, and A.O. Berthet, "Fast Performance Prediction of Iterative MMSE-IC Receivers in MU-MIMO CDMA Systems," WWRF22, Paris, France, May 2009.

Standardization:

 

France Telecom «Preliminary results on turbo equalization for GERAN trellis based sub-optimal receiver, » Tdoc 053, presented at 3GPP TSG GERAN AdHoc on release 2000 and beyond, Helsinki, Aug. 2000 (pdf).

 

France Telecom «Iterative receiver architectures for MIMO HSDPA, » REV-WS-032, presented at 3GPP Future Evolution Workshop, Toronto, 2-3 Nov. 2004 (slides) (abstract)

 

3GPP R1-090919 « Performance prediction of turbo-SIC receivers for system-level simulations, » Orange, Nokia, Nokia Siemens Networks, and Texas Instrument, Athens, Greece, Feb. 2009 (pdf)

 

COST Action:

 

French Delegate of the COST 289

 

European Union Information Society

 

Expert Evaluator at EU Information Society ( FP6IST - FP7ICT)

 

FP7ICT Consultation

 

«Promising Paradigms for Mobile Wireless Systems, » FP7 Consultation meeting: Future Mobile and Wireless Radio Systems, Brussels,  6 Feb. 2008 (pdf)

 

Ph.D. Thesis:

 

«Iterative and Joint Processing for Wireless Mobile Systems,» supervisor Prof. Joseph Boutros (ENST Paris), March 2002 (pdf) .

 

HDR (Accreditation to Supervise Research):

 

R. Visoz «Approche systémique des communications numériques pour les réseaux radio mobiles» (french report) Paris 6, Sept. 2006

 

External Research Contract supervising:

 

Contracts with Supelec (academic partner A.O. Berthet) , TELECOM Bretagne (academic partner Samir Saoudi) , Eurecom (academic partner Giuseppe Caire), CNRS L2S (academic partner Samson Lasaulce)

 

France Telecom Ph.D. student supervising:

 

Sami Chtourou with Joseph Boutros as academic supervisor, 2002-2005, "ST-BICM for ISI MIMO"

 

Patricia Layec  with Antoine Berthet as academic supervisor, 2005-2008, "MIMO with Partial Feedback"

 

Atoosa Hatefi  with Antoine Berthet as academic supervisor, 2008-2011, "Network Coding for Wireless Cooperative Communication"

 

Baozhu Ning with Antoine Berthet as academic supervisor, 2011-2014, “Interference exploitation”

 

Post-Doc supervising :

 

Nicolas Gresset "MIMO HSDPA"

Massinissa Lalam " performance prediction of Interference cancellation receivers"

 

Web pages of fellow workers:

 

Antoine Berthet, Samir Saoudi, Joseph Boutros, Raphael Le Bidan, Christophe Laot …

 

 

Reviewer of:

IEEE Transactions on Communications

IEEE Transactions on Vehicular Technology

IEEE Transactions on Signal Processing

IEEE Transaction on Wireless Communications

(and major IEEE conferences)