Mabrouk, Kais (2008) Conception et réalisation d’un système de Télécommunications MIMO avec Formation Numérique de Faisceaux en réception ; Calibrage aveugle du Démodulateur triphasé Zéro-IF et comparaison au démodulateur classique à 2 voies I et Q. PhD thesis Electronique et Communications, Radiofrequence et Micro-onde, ENST p.189.

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Alternative Locations: http://comelec.enst.fr/~mabrouk

Abstract

Within the framework of this research work, we have interested to a MIMO (Multiple Input Multiple Output) telecommunication system using the spatial multiplexing, Zero-IF receptors and the digital beamforming technique. The first part in this work is consecrated to a comparative study between two different kinds of Zero-IF demodulators: the classical IQ demodulator and the five-port and three-phase one. This study has allowed to highlight the three dimensional aspect of five-port and three-phase demodulators, to win up to 20dB in terms of rejection of inter-modulation product. Also this three dimensional aspect discovery help us to find a new blind calibration method. The second part of this thesis focuses on the prototyping of a MIMO system. This phase has allowed us to set the difficulties of the implementation of this systems kind and to highlight new problematics that don’t appear beforehand in mono-transceiver system. Moreover, a beamforming algorithm was developed in this part. This digital beamfoming has permit to increase the capacity as well as the quality of link when considering the MIMO system as N parallel SIMO systems. Compared to the ZF (Zero Forcing technique), we have proved that the beamforming permit the achievement a better signal quality for lower values of the signal to noise ratio.

References

[1] T. S. Rappaport, Wireless communications. Prentice Hall, 1996.

[2] L. Boithias, Propagation des ondes radio électriques dans l’environnement terrestre.

Dunod,1984.

[3] M. Schwartz, Principles of electrodynamics. McGraw-Hill, 1972.

[4] L. Boithias, Radio wave propagation. McGraw-Hill, 1987.

[5] A. Glavieux et M. Joindot, Communications numériques — Introduction. Masson, 1996.

[6] J. G. Proakis, Digital communications. McGraw-Hill, 1995.

[7] P. A. Bello, « Characterisation of randomly time-variant linear channels ». IEEE Transactions on

communication systems, Décembre 1963.

[8] W. C. Y. Lee, Mobile communications engineering. McGraw-Hill, 1982.

[9] G. J. Foschini et M. J. Gans, « On limits of wireless communications in a fading environment

when using multiple antennas ». Wireless personal communications, 1998.

[10]P. Guguen, Les Techniques Multi-Antennes pour les Réseaux sans Fil. ISBN 2-7462-0883-0,

Hermes, Décembre 2004.

[11] J. M. Auffray, Systèmes MIMO porteuses multiples : Etude et optimisation de la combinaison de

codes temps-espace et des techniques MC-CDMA. PhD thesis, INSA Rennes, Juin 2004.

[12] C. E. Shannon, Claude Elwood Shannon : collected papers, N. J. A. Sloane and A. D.

Wyner, Eds.IEEE Computer Society Press, 1993.



CHAPITRE II



[1] B. Razavi, ‘RF Transmitter Architectures and Circuits,’ in proceeding of the 1999 Custom

Integrated Circuits Conference, pp. 197-204, 1999.

[2] D.Pozar, “Microwave and RF Design of Wireless Systems,” John Wiley and Sons 2001.

[3] Martine Villegas et coll. « Radiocommunications numériques 2, Conception de circuits

intégrés RF et micro-ondes », 2e édition, Dunod 2007.

[4] B. Manaï « Méthode de dimensionnement de récepteurs radiomobile à conversion directe.

Application au filtrage à sélection de canal UMTS par la technique des capacités

commutées », Thèse doctorat Ecole Nationale Supérieure des Télécommunications, 2002.

[5] A.A. Abidi, “Direct-conversion radio transceivers for digital communications” Solid-State

Circuits, IEEE Journal of., Volume 30, Issue 12, Dec. 1995 Page(s):1399 - 1410.

[6] Les filtres à onde de surfaces, Electronique, no. 82, pp. 8-20, Juin 1998.

[7] D.K Weaver, “A Third Method of Generation and Detection of Single Side Band

Signals,” Proceeding of IRE, pp. 1703-1705, 1956.

[8] Engen “The Six-Port Reflectometer: An Alternative. Network Analyzer” IEEE-MTT’,

Vol. 25, No.12, Dec. 1977,. pp. 1075-1080.

[9] Ji Li, G. Bosisio, Ke Wu, Computer and measurement simulation of a new digital receiver

operating directly at millimeter-wave frequencies, IEEE Trans. on MTT, Vol. 43, No. 12,

December 1995, pp 2766-277

[10] Loper, Roger K and Marion, IA. “Direct conversion receiver with tri-phase

architecture,” US Patent 5095536, March 1992.



CHAPITRE III



[1] A. El Zooghby, "Smart Antenna Engineering"Artech House Edition 2005.

[2] G. J. FOSCHINI and M. J. GANS.“On Limits of Wireless Communications in a Fading

Environment When Using Multiple Antennas,” Wireless Personal Communications 6:

311–335, 1998.

[3] L. C. Godara, "Application of Antenna Arrays to Mobile Communications, Part II:

Beam-Forming and Direction-of-Arrival Considerations". Proc. of the IEEE, vol. 85,

No. 8, pp. 1193-1245, Aug. 1997.

[4] Godard, D. “Channel Equalization Using a Kalman Filter for Fast Data Transmission”.

IBM J. Res. and Dev. Vol. 18. 1974. pgs 167-273.

[5] Lotter, Michiel; Van Rooyen, Pieter & Van Wyk, Danie. Space – Time Processing For

CDMA Mobile Communications. Kluwer Academic Publishers. Boston-London.2000.

[6] Harry L. Van Trees. Optimum Array Processing Part IV. Wiley and Sons, 2002.

[7] Elise Ratajezyk & Dorian Lasnet, " Traitement d'antennes : méthodes de formation de

faisceau et de localisation", cours École Nationale Supérieure d'Ingénieurs de

Constructions Aéronautiques, janvier 2005

[8] Najib FADLALLAH, ‘Contribution à l’optimisation de la synthèse du lobe de

rayonnement pour une antenne intelligente.Application à la conception de réseaux à

déphasage’, UNIVERSITE DE LIMOGES, Thèse doctorat, 25 Mai 2005

[9] H. Krim, M. Viberg, "Two Decades of Array Signal Processing: The Parametric

Approach". IEEE Signal Processing Mag., pp. 67-94, July 1996

[10] Ren-Zhou Gui, Zi-Jie Yang, «Research on employment of adaptive beamformer based

on weight iterative algorithm in suppressing radio frequency interferences", article

JP1.13, September 2004

[11] KIRAN K. SHETTY, ‘A Novel Algorithm For Uplink Interference Suppression Using

Smart Antennas In Mobile Communications’, The Florida State University, Thèse

doctoral, October 2004

[12] B. Widrow, P.E. Mantey, L. J. Griffiths, P. B. Goode, "Adaptive Antennas Systems",

Proc.IEEE, vol. 55, pp. 2143-2158, 1967.

[13] Garmy Sow, " Méthodes d’Accès Multiple à Répartition Spatiale Pour Communications

Par Satellite ", Thèse doctorat, École Nationale Supérieure des télécommunications,

novembre 2003.

[14] I. Telatar. “Capacity Of Multi-Antenna Gaussian Channels”. Technical Memorandum,

Bell Laboratories, Lucent Technologies, October 1995. Published in European

Transactions on Telecommunications, 10(6) :585–595, December 1999.

[15] WINTERS J.H.,”On the Capacity of Radio Communication Systems with Diversity in a

Rayleigh Fading Environment”, IEEE Journal on selected areas in communications,

Vol. SAC-5, No. 5, June 1987.

[16] S.Pan and S.Durrani and M E. Bialkowski, "MIMO Capacity for Spatial Channel Model

Scenarios,"AusCTW'07,2007 IEEE pp 25-29

[17] H. Sampath and A. Paulraj. “Linear Precoding For Space-Time Coded Systems With

Known Fading Correlations”. In Asilomar Conference on Signals, Systems, and

Computers, Asilomar’01, volume 1, pages 246–251, November 2001.

[18] T. L. Marzetta and B. M. Hochwald. Capacity of a mobile multiple-antenna

communication link in rayleigh .at fading. IEEE Transactions on Information Theory,

45(1): 139–157, January 1999.

[19] B. M. Hochwald and T. L. Marzetta. Unitary space-time modulation for

multipleantenna communications in rayleigh flat fading. IEEE Transactions on

Information Theory, 46(2):543–564, March 2000.

[20] L. Zheng and D. Tse. “Communication On The Grassmann Manifold: A Geometric

Approach To The Noncoherent Multiple-Antenna Channel”. IEEE Transactions on

Information Theory, 48(2) :359–383, February 2002.

[21] F. KHARRAT-KAMMOUN, « Techniques adaptatives et classification des canaux à

antennes multiples» Thèse doctorat, ENST 2007.

[22] J. G. PROAKIS. « Digital Communications ». Electrical and Computer Engineering.

McGraw-Hill, 3éme édition, 1995.

[23] M. STOJANOVIC and Z. ZVONAR. “Multichannel processing of broad-band multiuser

communication signals in shallow water acoustic channels”. Oceanic Engineering, IEEE

Journal of. Apr 1996.

[24] K. CAVALEC-AMIS. Optimisation des Turbo Codes pour les systèmes à grande

efficacité spectrale. Thèse Doctorat, Université de Rennes 1, Département Signal et

Communications, ENST Bretagne, Décembre 2001.

[25] G. D. GOLDEN, C. J. FOSCHINI, R. A. VALENZUELA, and P. W. WOLNIANSKY.

“Detection Algorithm And Initial Laboratory Results Using V-Blast Space-Time

Communication Architecture”. In Electronic Letters, volume 35, pages 14–15, January

1999.

[26] P. W. Wolniansky, G. J. Foschini, G. D. Golden, and R. A. Valenzuela. “V-Blast: An

Architecture For Realizing Very High Data Rates Over The Rich-Scattering Wireless

Channel”, In Proceedings of the URSI International Symposium on Signal, Systems and

Electronics (ISSSE), pages 295–300, Pisa, Italy, September 29 - October 2 1998.

[27] Loïc BRUNEL. « Algorithmes de décodage de canal pour l’accès multiple à étalement

de spectre ». PhD thesis, Ecole Nationale Supérieure des Télécommunications, Paris,

Décembre 1999.

[28] M. O. DAMEN, K. ABED-MERAIM, and J. C. BELFIORE. A Generalized Sphere

Decoder for Asymmetrical Space-Time Communication Architecture. In IEE Electronic

Letters, volume 36, January 2000.

[29] M. O. DAMEN, A. CHKEIF, and J. C. BELFIORE. “Lattice Code Decoder for Space-

Time Codes”. In IEEE Communications Letters, volume 4, pages 166–169, May 2000.

[30] Ludovic COLLIN, « Optimisation de systèmes multi-antennes basée sur la distance

minimale » PhD thesis,, l’Université de Bretagne Occidentale 2002.

[31] A. F. Molisch : Wireless communications, chap 20, Ed Wiley 2005.



CHAPITRE IV



[1] Engen “The Six-Port Reflectometer: An Alternative. Network Analyzer” IEEE-MTT’,

Vol. 25, No.12, Dec. 1977,. pp. 1075-1080.

[2] Ji Li, G. Bosisio, Ke Wu, Computer and measurement simulation of a new digital

receiver operating directly at millimeter-wave frequencies, IEEE Trans. on MTT, Vol. 43, No.

12, December 1995, pp 2766-277

[3] Neveux, G.; Huyart, B.; Rodriguez-Guisantes, G.J.; Wide-band RF receiver using the

"five-port" Technology. Vehicular Technology, IEEE Transactions. Sept. 2004.

[4] M. Abe, N. Sasho, V; Brankovic, D; Krupezevic SONY; Direct conversion receiver

MMIC based on six-port technology, 30th European Microwave Conference, Paris 2000

[5] J. Hesselbarth, F. Wiedmann, B. Huyart, Two new Six-port reflectometers covering

very large bandwidths, IEEE Trans. On Instrumentation and Measurement, Vol. 46, No. 4,

August 1997

[6] F.R. de Sousa. « Application du corrélateur « Five-Port » aux PLLs, à la récupération

de porteuse et à un MODEM de télécommunications dans la bande 1,8-5,5 GHz. PhD thesis »,

Ecole Nationale Supérieure des Télécommunications, 2004 Paris.

[7] B. Bastani, E.E. Bautista, G. Nagaraj and J. Heck, “A Quadrature Down Converter For

Direct Conversion Receivers With High 2nd And 3rd Order Intercept Points”IEEE 2003.

[8] Abidi, A.A., “Direct-conversion radio transceivers for digital communications” Solid-

State Circuits, IEEE Journal of., Volume 30, Issue 12, Dec. 1995 Page(s):1399 - 1410.

[9] Razavi. B “RF Microelectronics” Prentice hall communications and engineering

technology Series1st edition ,November 6, 1997. Page(s) 63-86

[10] Kalle Kivekäs “Design And Characterization Of Downconversion Mixers And The

On-Chip Calibration Techniques For Monolithic Direct Conversion Radio Receivers”.

Dissertation for the degree of Doctor of Science in Technology, Helsinki University of

Technology (Espoo, Finland) October, 2002.

[11] K. Dufrene, Analysis and Cancellation Methods of Second Order Intermodulation

Distortion in RFIC Downconversion Mixers, PhD thesis , Erlangen-Nurnberg University,

Erlangen-2007

[12] P. Sivonen, A. Vilander, and A. Parssinen, “Cancellation of Second-Order

Intermodulation Distortion and Enhancement of IIP2 in Common-Source and Common Emitter RF Transconductors”, IEEE Transactions on Circuits and Systems I, vol. 52, pp. 305–

317, February 2005.

[13] M. R. Vagher, “Apparatus With Distortion Cancelling Feed Forward Signal,” US

Patent 5507036, April 1996.

[14] M. W. Hwang, S. Y. Yoo, J. C. Lee, J. Lee, and G. H. Cho, “A High IIP2 Direct-

Conversion Mixer using an Even-Harmonic Reduction Technique for Cellular

CDMA/PCS/GPS applications,” in Proceedings of the 2004 IEEE Radio Frequency

Integrated Circuits Symposium, 2004.

[15] M. R. Vagher, “Apparatus With Distortion Cancelling Feedback Signal,” US Patent

5613233, March 1997.

[16] F. Svelto, “Fully Integrated Receiver Front-Ends for Cell-Phones in Deep Submicron

CMOS,” in Proceedings of the 2006 IEEE Radio Frequency Integrated Circuits Symposium,

2006.

[17] Bautista, E.E., B. Bastani, and J. Heck, "A High IIP2 Downconversion Mixer Using

Dynamic Matching," IEEE Journal of Solid State Circuits, Vol. 35, No. 12, Dec 2000, pp.

1934-1941.

[18] P. W. Dent, “Compensation for Second Order Intermodulation in a Homodyne

Receiver,” US Patent 5749051, May 1998.

[19] P. Alinikula, H. O. Scheck, and K.-P. Estola, “Elimination of DC Offset and Spurious

AM Suppression in a Direct Conversion Receiver,” US Patent 6115593, September 2000.

[20] P. J. Shah, “Distortion Reduction Calibration,” US Patent Application 2003/0186664,

October 2003.

[21] M.Chen, Y. Wu, and M.F. Chang, “Active 2nd-Order Intermodulation Calibration for

Direct-Conversion Receivers”, in Proceeding of the 2006 IEEE International Solid-State

Circuits Conference, pp.1830-1831,2006.

[22] W.Kim, S-G. Yang, J.Yu, H.Shin, W.Choo, and B.-H Park,” A Direct Conversion

Receivers With an IP2 Calibration for CDMA/PCS/GPS/AMPS Applications”, IEEE Journal

of Solide-State Circuits, vol. 41,pp.1535-1541, July 2006.

[23] M.Hotti,J. Ryynanen, K.Kivekas and K.Halonen, “An IIP2 Calibration Technique for

Direct Conversion Receivers”, in Proceeding of the 2004 IEEE International Symposium on

Circuit and Systems, pp. IV-257-IV-260, 2004.

[24] M.Valkama, A. Shahed, L. Anttila, and M.Renfors, ”Advanced Digital Signal

Processing Techniques for Compensation of Nonlinear Distortion in Wideband Multicarrier Radio Receivers”, IEEE Transactions on Microwave Theory and techniques, vol. 54,

pp.2356-2366, June 2006.

[25] J.K Cavers and M ;W. Liao, ”Adaptative Compensation for Imbalance and Offset

Losses in Direct Conversion Tranceivers”, IEEE Transactions on Vehicular Technology,

vol.42, pp. 581-588, November 1993.

[26] L.Yu and M.W. Snelgrove,”A Novel Adaptative Mismatch Cancellation System for

Quadrature IF Radio Receivers”, IEEE Transactions on Circuits and Systems II, vol,

46,pp.789-801, June 1999.

[27] Mike Faulkner. “DC Offset and IM2 Removal in Direct Conversion Receivers”. IEE

Electronics Letters, vol. 149, no. 3, pp. 179-184, June 2002.

[28] Roland Hassun, Michael Flaherty, Robert Matreci, Mitch Taylor. ”Effective

Evaluation of Link Quality Using Error Vector Magnitude Techniques”. IEEE Wireless

Communications Conference 1997. Page(s) 89-94.

[29] Ji Li, G. Bosisio, Ke Wu, “Computer and measurement simulation of a new digital

receiver operating directly at millimeter-wave frequencies”, IEEE Trans. on MTT, Vol. 43,

No. 12, December 1995, pp 2766-2772

[30] M. Abe, N. Sasho, V; Brankovic, D; Krupezevic SONY; “Direct conversion receiver

MMIC based on six-port technology”, 30th European Microwave Conference, PARIS 2000.

[31] F.R. de Sousa and B.Huyart. “A new method for automatic calibration of 5-port

reflectometers”. Journal of Microwave and Optoelectronics,vol.3,N.5,pp.135-144, July 2004.

[32] Marko Mailand and Hans-Joachim Jentschel “An Effort Reduced Six-Port Direct

Conversion Receiver and Its Calibration” IEEE Communications Society / WCNC 2005.

[33] Mohamed, C.; Mabrouk, K.; Abouchakra, S.; Huyart, B.; Interference rejection in a

Five-port homodyne receiver Wireless Technology, 2006. The 9th European Conference on

Sept. 2006 Page(s):295 – 297

[34] Glenn F. Engen and Cletus A. Hoer. Thru-reflect-line : An improved technique for

calibrating the dual six-port automatic network analyzer. IEEE Transactions on Microwave

Theory and Techniques, 27(12) :987–993, December 1979.

[35] F. Wiedman, Bernard Huyart, Eric Bergeault, and Louis Jallet. A new robust method

for six-port reflectometer calibration. IEEE Transactions on Instrumentation and

Measurements, 48 :927–931, 1999.

[36] Ulrich Stumper. Finding initial estimates needed for the Engen method of calibrating

single six-port reflectometers. IEEE Transactions on Microwave Theory and Techniques,

38(7) :946–949, July 1990.

[37] F.M. Ghannouchi and R.G Bosisio. An alternative explicit six-port matrix calibration

formalism using five standards. IEEE Transactions on Microwave Theory and Techniques,

36(3) :494–498, March 1988.

[38] Yi Liu. Calibrating an industrial microwave six-port instrument using the artificial

neural network technique. IEEE Transactions on Instrumentation and Measurements, 45(2)

:651–656, 1996.

[39] Xinping Huang, Dan Hindson, Michel de Léséleuc, and Mario Caron. I/q-channel

regeneration in 5-port junction based direct receivers. In 1999 IEEE MTT-S International

Topical Symposium on technologies for wireless applications, pages 169–173, February 1999.

[40] Xinping Huang, Mario Caron, and Dan Hindson. Adaptative i/q-channel regeneration

in 5-port junction based direct receivers. In Fifth Asia-Pacific Conference on Communications

and Fourth Optoelectronics and Communications Conference, volume 1, pages 717–720,

October 1999.

[41] Xinping Huang, Dan Hindson, and Mario Caron. “A Recursive Gram-Schmidt

Orthonormalization Procedure And Its Application To Communications”. In 2001 IEEE Third

Workshop on Signal Processing Advances in Wireless Communications, pages 340–343,

March 2001.

[42] Tim Hentschel. “A Simple IQ-Regeneration Technique For Six-Port Communication

Receivers”. In Proceedings of the First International Symposium on control, Communications

and Signal Processing, pages 311–314, March 2004.

[43] Ji Li, Renato G. Bosisio, and Ke Wu. Dual-tone calilibration of six-port junction and

its application to the six-port direct digital millimetric receiver. IEEE Transactions on

instrumentation and Measurements, 44(1) :93–99, 1996.

[44] W.Z. Xiong and V.F. Fusco. Wideband 0.9 GHz to 5 GHz six-port and its application

as digital modulation receiver. IEE Proceedings - Microwave, Antennas and Propagation,

150:301–307, August 2003.

CHAPITRE V



[1] Andreas F.Molisch and Moe Z.Win: MIMO systems with Antenna Selection. IEEE

microwave magazine,pp 46-56. March 2004

[2] Ji Li, G. Bosisio, Ke Wu, “Computer and measurement simulation of a new digital

receiver operating directly at millimeter-wave frequencies”, IEEE Trans. on MTT, Vol. 43, No.

12, pp 2766-2772, December 1995.

[3] Neveux, G.; Huyart, B.; Rodriguez-Guisantes, G.J.; “Wide-band RF receiver using the

"Five-port" Technology” Vehicular Technology, IEEE Transactions Sept. 2004.

[4] M. Abe, N. Sasho, V; Brankovic, D; Krupezevic SONY; “Direct conversion receiver

MMIC based on six-port technology”, 30th European Microwave Conference, PARIS 2000

[5] J. Hesselbarth, F. Wiedmann, B. Huyart, “Two new Six-port reflectometers covering very

large bandwidths”, IEEE Trans. On Instrumentation and Measurement, Vol. 46, No. 4, August

1997

[6] M.F.Siyau “Channel estimation for layered space-time systems”. 4th IEEE Workshop on

SPAWC. 2003.

[7] Thomas Melkebeke A MIMO PLATFORM AT 2.4 GHz- ENST, Engineer Degree stage’s

report. 2005

[8] A.J Paulraj Space-time modems for wireless personal communications. IEEE Personal

Communications, (1):36-48, February 1998.

[9] T.L Marzetta. Blast training: Estimating channel characteristics for high capacity spacetime

wireless. In Proceeding 37th Annual Allerton Conference on Communication, Control and

Computing, Monticello, IL September 22-24 1999.

[10] Lal, C. Godara. “Applications of Antenna Arrays to mobile Communications, Part I:

Performance Improvement, feasibility, and System Considerations”. Proceedings of the IEEE,

Vol. 85, No. 7, July 1997.

[11] B. Widrow, P.E. Mantey, L. J. Griffiths, P. B. Goode, "Adaptive Antennas Systems",

Proc.IEEE, vol. 55, pp. 2143-2158, 1967.

[12] Harry L. Van Trees. Optimum Array Processing Part IV. Wiley and Sons, 2002.

[13] Barry D. Van Veen and Kevin M. Buckley. “Beamforming: A Versatile Approach to

Spatial Filtering”, IEEE ASSP Magazine, April 1998.

[14] J. H. Winters, J. Salz, and R. D. Gitlin, “The impact of antenna diversity on the capacity

of wireless communication systems,” IEEE Trans. Commun., vol. 42, nos. 2/3/4, pp. 1740–1751,

Apr. 1994.

[15] A.El Zooghby,"Smart Antenna Engineering"Artech House Edition 2005 pp 159-186.

[16] Ren-Zhou Gui, Zi-Jie Yang, «Research on employment of adaptive beamformer based on

weight iterative algorithm in suppressing radio frequency interferences", article JP1.13,

September 2004.

[17] Kiran, k. Shetty, “A Novel Algorithm For Uplink Interference Suppression Using Smart

Antennas In Mobile Communications”, the Florida State University, thèse doctorat, Mai 2004.

[18] F.Michaut, « Méthode Adaptative Pour Le Signal : Outil Mathématiques Et Mise En

Oeuvre Des Algorithmes», livre Hermes edition 2002

[19] J. Benesty, «Algorithmes Adaptatives», cours INRS-EMT, Mars 2005

[20] A.Perrier,« Developpement Et Analyse De Performance D’algorithmes De Type Gradient

Stochastique » thèse doctorale à l’ENST Paris 1995

[21] Jeffrey D. Connor, “A Study Of Despread-Respread Multitarget Adaptive Algorithms In

An AWGN Channel”, the Florida state University famu-fsu college of engineering, thèse

doctorat, September 2005

[22] Jaedon Park, Jewoo Kim. “A New Adaptive Beamforming Algorithm for MlMO Smart

Antennas”, IEEE journal on select areas in communications, October 2002.

[23] Kais Mabrouk, Bernard Huyart, Xavier Begaud and Abdellatif Belhadj Mohammed.

“Baseband to baseband calibration of a MIMO wireless system”, Proceedings of the 10th

European Conference on Wireless Technology, October 200è

[24] K.Mabrouk, C. Mohamed, S. Abou charka,B.Huyart, “A practical DIDO communications

platform,” Wireless Technology, IEEE European Microwave Conference.

Table of content

Introduction générale - 8

Chapitre I : Environnement des systèmes de radiocommunication - 13

Introduction - 13

1.1 Propagation - 14

1.1.1 La propagation en espace libre - 14

1.1.2 La propagation hors espace libre - 15

1.1.3 Le bruit radioélectrique - 19

1.2 Canal de propagation - 20

1.2.1 Modélisation du canal de propagation - 20

1.2.2 Dispersions dans les canaux - 22

1.2.3 La sélectivité des canaux - 25

1.2.4 La diversité dans le canal - 26

1.2.5 Capacité du canal - 27

Conclusion - 28

REFERENCES BIBLIOGRAPHIQUES : - 29

Chapitre 2 Architecture et caractéristiques des Récepteurs Radio - 31

Introduction - 31

2.1 Modulation des signaux - 32

2.2 Les récepteurs - 33

2.2.1 Paramètres caractéristiques d’une chaîne de réception - 33

2.2.2 Architectures des récepteurs - 40

Conclusion - 52

REFERENCES BIBLIOGRAPHIQUES - 55

Chapitre III Les systèmes multi-antennes - 57

Introduction - 57

3.1 Le système de radiocommunication SIMO - 58

3.1.1 Modèle du canal SIMO - 58

3.1.2 Capacité du canal SIMO - 59

3.1.3 Formateur de faisceaux ou beamforming dans les systèmes SIMO - 60

3.2 Les systèmes de Radiocommunication MIMO - 72

3.2.1. Modèle théorique d’un système MIMO - 72

3.2.2. Les techniques MIMO - 73

3.2.3. Récepteurs numérique MIMO - 83

Conclusion - 86

REFERENCES BIBLIOGRAPHIQUES - 90

Chapitre IV Etude comparative entre les deux types de démodulateurs Zéro-IF : cinq-port et IQ

classique, aspect tridimensionnel du cinq-port et nouvelle calibration aveugle - 94

Introduction - 94

4.1 Présentation classique du récepteur Zéro-IF cinq-port - 95

4.2- Etude comparative des deux architectures de démodulateurs Zéro-IF - 98

4.2.1 Le démodulateur triphasé - 98

4.2.2 Effet de Non-linéarités sur les démodulateurs Zéro-IF et rejection de la distorsion

d’intermodulations d’ordre 2 - 100

4.2.3 Simulation du comportement des démodulateurs Zéro-IF face à un canal adjacent...103

4.2.4 Etat de l’art des techniques de rejection de l’intermodulation d’ordre pair - 107

4.2.5 Circuits conçus et bancs de mesure - 109

4.2.6 Résultats de mesure - 113

4.3 Aspect tridimensionnel de la technique 5-port pour les récepteurs Zéro IF - 117

4.3.1 Le cinq port et le triphasé dans un contexte récepteur - 117

4.3.2. Orthogonalité aux canaux adjacents - 121

4.4. Calibrage aveugle du cinq-port et du triphasé - 126

4.4.1. Etat de l’art sur les techniques de calibration - 126

4.4.2. La technique de calibration aveugle - 128

4.4.3. Résultats de mesures - 131

Conclusion - 136

REFERENCES BIBLIOGRAPHIQUES: - 137

Chapitre 5 Conception de la plateforme MIMO 2X2 et nouvelle architecture MIMO à

multiplexage de faisceaux en réception - 142

Introduction - 142

5-1 Plateforme MIMO 2×2 - 143

5-1-1 Plateforme MIMO utilisant la technique de démodulation cinq-port avec précalibration - 143

5.1.2 Calibration de bande de base en bande de base d’un système MIMO utilisant la

technique cinq-port - 150

5.2 Récepteur Numérique MIMO à multiplexage spatial par la formation de faisceaux - 160

5.2.1 Algorithme de FF numérique pour le récepteur MIMO - 163

5.2.2 Banc de test et résultats de simulation - 169

Conclusion - 174

RÉFÉRENCES BIBLIOGRAPHIQUES: - 176

Conclusion générale & Perspectives - 179

PUBLICATIONS : - 186

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