Principal Member of Research Staff
System Research Center, Palo Alto, CA
Contact
I have been studying Electrical Engineering at the University of Dortmund, Germany. After receiving my diploma degree in 1994, I worked 4 years at the Communication Technology Institute. In 1999, I finished my PhD thesis on Decentral wireless Inhouse Networks for broadband Communication. I joint Nokia Research Center in Bochum, Germany in March 1999.
I started my work at Nokia in the area of Design Reuse, which has been a broad research topic at that time. One challenge has been the development of a consistent, company wide methodology.
From there I moved further to the Computing architecture domain. In the scope embedded bus systems I contributed to two ASIC developments. Making them configurable and programmable has been one objective. Reconfigurable architectures have been a topic for my research activities for a couple of years now. I have been involved in the definition and execution of a couple of German and European funded research projects in this area.
In 2005 I started working on virtualization technologies and multi-core architectures, leading a successful 2.5 year Nokia research program on this topics.
During 2007 I have been supporting the head of the Bochum Laboratory to implement a new organizational structure following a major renewal of NRC's way of working. This includes facilitaing the change process and the setup and fast ramp up of the new team structure and project portfolio.
In parallel, I have been looking for new research and collaboration opportunities for mobile devices in the area of future services and applications, technology enables and end-customer trials.
In October 2007 I relocated to Nokia's System Research Center in Palo Alto, going back to a strong technical focus. I am working on system virtualization solutions for mobile devices, their potential use cases, challenges and solutions. The work includes system concepting, early prototyping and collaboration with industry and academia.
My research interests is covering domains from computing architectures to wireless communication, from hardware to low-level software and operating systems. In recent years I got interested to middleware and application level software as well.
I am very interested to work on system level and then develop and implement a concrete but very convincing element or use case out of this.
D. Bourse (Motorola), R. Tafazolli (University of Surrey), A. Alexiou (Alcatel-Lucent), S. Arbanowski (Fraunhofer Fokus), J. Brakensiek (Nokia), B. Cardinael (France Telecom), I. Gaspard (Deutsche Telekom), L. Hiebinger (Nokia Siemens Networks), W. Koenig (Alcatel-Lucent), B. Le Floch (France Telecom), C. Le Martret(Thales Communications), J. A. López-Salcedo (University of Barcelona), J. López-Vicario (University of Barcelona), J. Lundsjo (Ericsson), A. Mihailovic (King’s College), P. Moberg (Ericsson), K. Moessner (University of Surrey), J.-N. Patillon (Motorola), G. Seco (University of Barcelona), D. Soro (Iber-X), "Beyond 3G / 4G Radio Access Technologies (RATs) and Standards Roadmaps", eMobility Technology Platform Whitepaper.
J. Brakensiek, A. Dröege, H. Härtig, A. Lackozynski, "Virtualization as an Enabler for Security in Mobile Devices",1st Workshop on Isolation and Integration in Embedded Systems (IIES'08), Glasgow, Scotland, UK, 01.04.2008 ISBN 978-1-60558-126-2
H. Blume, J. v. Livonius, L. Rotenberg, T. G. Noll, H. Bothe, J. Brakensiek, "OpenMP-based Parallelization on an MPCore Multiprocessor Platform – A Performance and Power Analysis", Journal of System Architectures, Special Issue of SAMOS 2007 Conference, To be published in 2008
J. Brakensiek, "Performance / Power Measurements for Embedded Multi-Core Processors",IST-ARTIST Newsletter, No 4, September 2007
H. Blume, J. Livonius, L. Rotenberg, H. Bothe, J. Brakensiek, T. G. Noll, "Performance and Power Analysis of Parallelized Implementations on an MPCore Multiprocessor Platform", SAMOS-VII Samos, Greece 17.-19.07.2007
H. Blume, D. Becker, L. Rotenberg, M. Botteck, J. Brakensiek, T. G. Noll, "Hybrid Functional- and Instruction-Level Power Modeling for Embedded and Heterogeneous Processor Architectures", IEEE Journal of System Architectures Special issue on the 6th SAMOS workshop 2006, 2007
J. Brakensiek, "Multi Execution Environments @ Multi Cores - Use Cases, Requirements and Concepts", MultiCore Expo Santa Clara, US 27.-29.03.2007
J. Brakensiek, U. Lucking, B. Steinke, "Terminal Reconfiguration for a Bug-Fixing Use Case – Methods, Interfaces and Configuration Packages", 4th Karlsruhe Workshop on Software Radios Karlsruhe, Germany 22-23.03.06
B. Steinke, J. Brakensiek, T. Kaesler, U. Lücking, "Reconfiguration Flow for a Bug-Fix Use Case in a real time system", IST Summit 06 Mykonos, Greece 05-07.06.06
K. Hueske, M. Otte, J. Götze, J. Brakensiek, "MIMO Signal Processing On A Reconfigurable Architecture", 14th European Signal Processing Conference (Eusipco2006) Florence, Italy September 2006
J. Brakensiek, T. Eriksson, R. Suoranta, P. Liuha, "Modular Service based Platform Architecture for Mobile Devices", 16th WWRF Conference Shanghai, China 26.04. - 28.04.2006
H. Blume, D. Becker, M. Botteck, J. Brakensiek, T. G. Noll, "Hybrid Functional and Instruction Level Power Modeling for Embedded Processors", 6th International Samos Workshop on Embedded Computer Systems: Architectures, MOdeling, and Simulation Samos, Greece 17.07. - 20.07.2006
J. Brakensiek, "Mobile Platform Services" 17th WWRF Conference Heidelberg, Germany 15.11. - 17.11.2006
D. Bourse, K. El-Khazen, M. Arndt, N. Alonistioti, M. Dillinger, J. Brakensiek, K. Moessner, D. Bateman, "End-to-End Reconfigurability – Towards Seamless Experience", Wireless World Research Forum (WWRF), 13nd Meeting, WG6 Jeju, South Korea 02-03.03.05
B. Steinke, H. Seidel, S. Naveen, J. Brakensiek, M. Halimic, "Hardware Abstraction Architecture based on Configurable Execution Modules for functional System Chains", Wireless World Research Forum (WWRF), 13nd Meeting, WG6 Jeju, South Korea 02-03.03.05
D. Bourse, K. El-Khazen, N. Berthet, T. Wiebke, M. Dillinger, J. Brakensiek, K. Moessner, G. Vivier, N. Alonistioti, "End-to-End Reconfigurability: Towards the Seamless Experience", IST Mobile and Wireless Summit 2005 Dresden, Germany 19-23.06.05
D. Bourse, K. El-Khazen, K. Moessner, N. Alonistioti, J. Brakensiek, T. Hentschel, "End-to-End Reconfigurability Tutorial @ IST Summit 2005", IST Mobile and Wireless Summit 2005 Dresden, Germany 19.06.05
J. Brakensiek, J. Voegler, B. Steinke, "E2R Configuration Management Module (CMM) Research", E2R – SDR Forum joint Workshop Brussels, Belgium 15.09.05
J. Brakensiek, "E2R Equipment Management and Control", WWI Shanghai Workshop Shanghai, China 20-21.10.05 (Tutorial)
D. Bourse, K. El-Khazen, R. Pintenet, N. Berthet, J. Voegler, N. Olaziregi, J. Brakensiek, K. Moessner, N. Alonistioti, "End-to-End Reconfigurability: Key Achievements and Learning of Phase 1 (2004-2005)", SDRF Technical Conference Anaheim, USA 14-17.11.05
E. Nicollet, D. Bourse, J. Brakensiek, S. Walter, C. Dolwin, M. Halimic: "E²R and P²SRC : Some fruitful research opportunities?", OMG Software-Based Communications Workshop San Diego, US 16.-19. August 2005
L. Maurer, J. Brakensiek, B. Steinke, S. Naveen, T. Burger, T. Dellsperger, M. Halimic, L. Alimi, M. Bronzel, T. Loewel: "E²R White Paper: Hardware Technology Exploration", E2R White Paper Dec. 2005
D. Bourse, K. El Khazen, A. Delautre, T. Wiebke, M. Dillinger, J. Brakensiek, K. Moessner, G. Vivier, N. Alonistioti, "End-to-End Reconfigurability (E2R)", Wireless World Research Forum (WWRF) 8bis Meeting, WG6 Beijing, China 27-28.02.04
J. Brakensiek, D. Lenz, T. Wiebke, S. Gultchev, A. Bisiaux, M. Halimic, C. Dolwin, "Management and Controlling Architecture in E2E Reconfigurable Terminals", Workshop on Software Radio (WSR04) Karlsruhe, Germany 17-18.03.04
J. Brakensiek, D. Lenz, B. Steinke, M. Halimic, C. Dolwin, S. Naveen, A. Bisiaux, "Hardware Abstraction in an End-to-End Reconfigurable Device", Wireless World Research Forum (WWRF), 11th Meeting, WG6 Oslo, Norway 10-11.06.04
D. Bourse, K. El Khazen, A. Delautre, T. Wiebke, M. Dillinger, J. Brakensiek, K. Moessner, G. Vivier, N. Alonistioti, "European Research in End-to-End Reconfigurability", IST Mobile and Wireless Summit 2004 Lyon, France 27-30.06.04
M. Bronzel, H. Seidel, J. Brakensiek, D. Lenz, A. Bisiaux, C. Moy, A. Kountouris, M. Halimic, S. Walter, S.K. Pilakkat, L. Maurer, T. Burger, "Functional Elements in E2E Reconfigurable Equipment", IST Mobile and Wireless Summit 2004 Lyon, France 27-30.06.04
T. Farnham, C. Dolwin, S. Zhong, R. Atukula, U. Lucking, S. Mende, J. Brakensiek, S. Buljore, N. Alonistioti, F. Foukalas, A. Glentis, P. Magdalinos, P. Demstichas, V. Stavroulaki, "E2R Equipment Management and Control", E2R Workshop Barcelona, Spain 05.09.04
S. Naveen, B. Steinke, H. Seidel, J. Brakensiek, L. Maurer, M. Halimic, R. Burgess, S. Walter, T. Dellsperger, "Reconfigurable Modem Architecture and its Abstraction in an End to End Reconfigurable Communication Network", Wireless World Research Forum (WWRF), 12nd Meeting, WG6 Toronto, Canada 03-05.11.04
V. Stavroulaki, P. Demestichas, S. Buljore, P. Roux, N. Alonistioti, F. Foukalas, J. Brakensiek, R. Atukula, U. Lücking, S. Mende, T. Farnham, C. Dolwin, S. Zhong, J. Vogler, G. Pfeiffer, M. Halimid, S. Gultchev, "A System for the Management and Control of Equipment in an End-to-End Reconfigurability Context", Wireless World Research Forum (WWRF), 12nd Meeting, WG6 Toronto, Canada 03-05.11.04
D. Bourse, K. El-Khazen, N. Berthet, T. Wiebke, M. Dillinger, J. Brakensiek, K. Moessner, G. Vivier, N. Alonistioti, "E2R Project", IST Conference La Hague, Netherlands 15-17.11.04
C. Dolwin, S. Mende, J. Brakensiek, "The Role of the Configuration Control Module in an End to End Reconfigurable System", SDR Forum Technical Conference Phoenix, US 15-18.11.04
D. Bourse, K. El-Khazen, G. Vivier, Y. Denef, T. Wiebke, M. Dillinger, J. Brakensiek, K. Moessner, N. Alonistioti, "E2R Project: Major European Initiative on Reconfigurability", SDR Forum Technical Conference Phoenix, US 15-18.11.04
J. Brakensiek, M. Halimic, "Software Reconfigurable Digital Baseband from an End-to-End Perspective", IEEE Radio and Wireless Conference (RAWCON) Boston, US 19. September 2004 (Tuturial)
P. Rykaczewski, J. Brakensiek, F. Jondral, "Decision Directed Methods of I/Q Imbalance Compensation in OFDM Systems", Proceedings of the 60th IEEE Vehicular Technology Conference (VTC F'04) Los Angeles 26.-29. Sep. 2004
P. Rykaczewski, J. Brakensiek, F. Jondral, "Towards an Analytical Model of I/Q Imbalance in OFDM Based Direct Conversion Receivers", Proceedings of the 59th IEEE Vehicular Technology Conference (VTC S'04) Milan, Italy 17.-19. May 2004
B. Steinke, M. B.S. Tavares, Jörg Brakensiek, "Multi-Standard Algorithms for Frequency Sychronization and Channel Estimation in IEEE 802.11a and UMTS/FDD", Proceedings of the 3rd Karlsruhe Workshop on Software Radios, ISSN 1616-6019 Karlsruhe, Germany 17.-18. March 2004
J. Brakensiek, "Reconfigurability Issues, Local to the Equipment", EU BAI Cluster Meeting Brussels, Belgium 10.03.04
V. Stavroulaki, P. Demestichas, L. Berlemann, T. Dodgson, J. Brakensiek, "Element Management, Flexible Air Interfaces", SDR WWRF WG6 White Paper Dec. 2004
B. Oelkrug, M. Buecker, A. Droege, D. Uffmann, J. Brakensiek, "Fast System-On-Chip Prototyping Using ASIP Hardware Accelerators", Workshop Dresdner Arbeitstagung Schaltungs- und Systementwurf (DASS 2004) Dresden, Germany April 2004
M. Petrov, T. Murgan, A. Obeid, C. Chitu, P. Zipf, J. Brakensiek, M. Glesner, "Dynamic Power Optimization of the Trace-Back Process for the Viterbi Algorithm", IEEE Intl. Symposium on Circuits and Systems (ISCAS) Vancouver, Canada May 2004
J. Brakensiek, M. Darianian, S. Walter, C. Dolwin, M. Halimic, L. Maurer, A. Kountouris, "Reconfigurable Physical Layer Architecture supporting End to End Reconfiguration (E2R)", Wireless World Research Forum (WWRF), 10th Meeting, WG6 New-York, USA 27-28.10.03
D. Bourse, S. Buljore, A. Delautre, T. Wiebke, M. Dillinger, J. Brakensiek, K. Moessner, K. El Khazen, N. Alonistioti, "The End-to-End Reconfigurability (E2R)", Research Wireless World Research Forum (WWRF), 10th Meeting, WG6 New-York, USA 27-28.10.03
D. Bourse, S. Buljore, A. Delautre, T. Wiebke, M. Dillinger, J. Brakensiek, K. Moessner, K. El-Khazen, N. Alonistioti, "The End-to-End Reconfigurability (E2R) Research", SDR Forum Technical Conference Orlando, USA 17-19.11.03
J. Brakensiek, B. Oelkrug, B. Heyne, P. Rykaczewski, "Digital Baseband Challenges for a Multi-Mode UMTS/WLAN Terminal Receiver", Proceedings of the EUMW - 33rd European Microwave Conference Munich, Germany 10. Okt 2003
J. Brakensiek, B. Steinke, "Digital Baseband Architecture Requirements for SDR Based Terminals", 48. Internationales Wissenschaftliches Kolloquium (IWK48) Ilmenau, Germany 22.-25. September 2003
J. Brakensiek, D. Uffmann, M. Bücker, B. Oelkrug, "Optimized Algorithm Specific Instruction Set Processing (ASIP) inside SDR Terminals", 48. Internationales Wissenschaftliches Kolloquium (IWK48) Ilmenau, Germany 22.-25. Sept. 2003
M. Petrov, A. Obeid, T. Murgan, J. Brakensiek, P. Zipf, M. Glesner, "An Adaptive Trace-Back Solution for State-Parallel Viterbi decoders", IFIP International Conference on Very Large Scale Integration (VLSI'03) Darmstadt, Germany 1.-3. Dec. 2003
T. Murgan, M. Petrov, A. G. Ortiz, R. Ludewig, P. Zipf, T. Hollstein, M. Glesner, B. Oelkrug, J. Brakensiek, "Evaluation and Run-Time Optimisation of On-Chip Communication Structures in Reconfigurable Architectures", Intl. Conference on Field Programmable Logic and Applications Lisbon, Portugal 1.-3. Sep. 2003
J. Brakensiek, R. Wittmann, M. Darianian, "Software defined Radio Technology for Multistandard Termainals", 2nd Karlsruhe Workshop on Software Radios Karlsruhe, Germany 20.-21. March 2007
B. Oelkrug, M. Bücker, D. Uffmann, A. Dröge, J. Brakensiek, M. Darianian, "Programmable Hardware Accelerator for Universal Telecommunication Applications", 2nd Karlsruhe Workshop on Software Radios Karlsruhe, Germany 20.-21. March 2002
J. Brakensiek, B. Oelkrug, M. Bücker, D. Uffmann, A. Dröge, M. Darianian, "Software Defined Radio Approach for Re-configurable Multi-Standard Terminals", 13th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC) Lisbon, Portugal September 2002
J. Brakensiek, B. Oelkrug, M. Bücker, D. Uffmann, A. Dröge, "Re-configurable Multistandard Terminal for Heterogeneous Networks", IEEE Radio and Wireless Conference (RAWCON) Boston, US August 2002
Z. Lei, O. Franzen, J. Brakensiek, H. Schröder, "Constant Modulus Algorithm for Blind Equalization of Multipath Transmitted Video Signals in Cable Networks", Signal Processing: Image Communication, Elsevier, Vol. 16, No. 5 January 2001
J. Brakensiek, "Ein Beitrag zu dezentralen, funkbasierten Inhouse-Netzen für breitbandige Kommunikation" Dissertation University of Dortmund, Verlag Shaker, Aachen 2000 (in German)
J. Brakensiek, "Messung und Modellierung des zeitvarianten Verhaltnes eines Inhouseübertragungskanals bei 2.45 GHz", ITG-Diskussionssitzung Reisenburg, Germany März 1999 (in German)
T. Herfet, P. Appelhans, J. Brakensiek, "Characteristics of the 2.45 GHz-ISM-Channel & Derived IHDN-System Architecture Workshop IHDN Ulm, Germany 1998
J. Brakensiek, W. Endemann, "Messung und Modellierung des Inhouseübertragungskanals bei 2.45 GHz", 43rd International Scientific Colloquium Ilmenau, Germany 1998 (in German)
J. Brakensiek, O. Franzen, "Bandwidth efficient Medium Access for an Inhouse Wireless", LAN MTT-S European Wireless 98 Amsterdam, Netherlands 1998
J. Brakensiek, W. Endemann, "Kanalmessungen mit hoher Zeit- und Frequenzauflösung", Beitrag zum 7. Dortmunder Fernsehseminar Dortmund, Germany 1997 (in German)
