UWB radio: From an Idea to Implementation

14:00-17:00     September 20, 2010

• Speakers:
  

  Prof. Geza Kolumban	Francis C.M. Lau	Chi K. Tse

  
  
• Tutorial outline:
  
  1. Interpretation of the FCC Regulations
  Based on the exact mathematical model we will determine the maximum allowable energy per bit and the voltage swing that is required at the antenna input.
  
  2. Radio coverage of UWB systems
  The conventional link budgets rely on SNR and average power because these quantities can be measured by the existing test equipment. This approach simply cannot be used if the duty cycle is extremely low as in the case of UWB radio. A novel approach relying on energy per bit has to be developed.
  
  3. Implementation issues both at the transmitter and at the receiver
  Handheld UWB devices must be cheap, operate from 1.2V and provide an ultra low power consumption. These requirements and FCC Regulations have a few very series consequences: if CMOS with 1.2-V supply voltage is used than a voltage swing of 10V allowed by FCC Regulations cannot be exploited or a LC resonant circuit has to be used at transmitter. Coherent receivers cannot be used because of their high power consumption. This section will revisit the implementation problem considering the FCC Regulations, CMOS feasibility and application requirements.
  
  4. Techniques to improve the coverage of UWB radio
  The conclusion is that the coverage offered by the existing UWB networking devices is too short. 
  We will describe some ideas how the energy per bit can be increased keeping the voltage swing constant, and how the noise performance of detector can be optimized.
  
  
• Speaker’s Biography
  • Geza Kolumban received his M.Sc. (1976) and Ph.D. (1990) degrees from the Technical University of Budapest, his C.Sc. (1990) and D.Sc. (2004) degrees from the Hungarian Academy of Sciences, and his Dr.habil degree (2005) from the Budapest University of Technology and Economics. He is an IEEE fellow (2005) with the citation: ”for contributions to double sampled phase-locked loops and noncoherent chaotic communications.”
    After his graduation, he spent 15 years in the professional telecommunications industry where he developed
    microwave circuits for high-capacity microwave radio relay systems, PLL-based frequency synthesizers for satellite and frequency hopping applications. He was involved in many system engineering projects such as SCPC-type satellite telecommunication system, microwave satellite up- and down-converters, low-capacity microwave digital radio system, etc.
    Now he is with the Faculty of Information Technology of the Pazmany Peter Catholic University. Before the
    Pazmany University he served for 16 years at the Budapest University of Technology and Economics as a full
    professor.
    During his university carrier Prof. Kolumban has shown that chaos exists in analog phase-locked loops, elaborated the theory of chaotic waveform communications and established noncoherent chaotic communications as a brand new research direction. He developed DCSK and FM-DCSK, the most popular chaotic modulation schemes.
    Two of his papers, co-authored with Profs. M.P. Kennedy and L.O. Chua, have been ranked in top-cited IEEE
    Trans. CAS-I articles. 63 of his publications have been cited more than 1000 times by independent authors.
    He has been a visiting professor and researcher to the Electronics Research Laboratory, University of California, Berkeley, The Hong Kong Polytechnic University and City University of Hong Kong, China, INSA-LATTIS Laboratory, University of Toulouse, France, University College Dublin and Cork, Ireland, EPFL, Lausanne, Switzerland, TU Dresden, Germany, Bilkent University, Ankara, Turkey and The Eastern Mediterranean University, Famagusta, Cyprus.
    As an expert in telecommunications and RF & microwave automated testing, Prof. Kolumban worked for Samsung Advanced Institute of Technology, SSL, National Instruments, Mobitel and Bonn Hungary Electronics.
  • Francis C.M. Lau received the BEng (Hons) degree with first class honors in electrical and electronic engineering and the PhD degree from King’s College London, University of London, UK, in 1989 and 1993, respectively. He is currently an Associate Professor and Associate Head at the Department of Electronic and Information Engineering, The Hong Kong Polytechnic University, Hong Kong. He is the co-author of Chaos-Based Digital Communication Systems (Heidelberg: Springer-Verlag, 2003) and Digital Communications with Chaos: Multiple Access Techniques and Performance Evaluation (Oxford: Elsevier, 2007). He is also a co-holder of one US patent and two pending US patents. His main research interests include ultra-wideband communications, chaos-based digital communications, channel coding, cooperative networks, and applications of complex-network theories.
    He served as an associate editor for IEEE Transactions on Circuits and Systems II in 2004–2005 and IEEE
    Transactions on Circuits and Systems I in 2006–2007. He was also an associate editor of Dynamics of Continuous, Discrete and Impulsive Systems, Series B from 2004 to 2007 and was a co-guest editor of Circuits, Systems and Signal Processing for the special issue “Applications of Chaos in Communications” in 2005. He is currently a guest associate editor of International Journal and Bifurcation and Chaos.
    He is a senior member of IEEE.
  • Chi K. Tse received the BEng (Hons) degree with first class honors in electrical engineering and the PhD degree from the University of Melbourne, Australia, in 1987 and 1991, respectively.
    He is presently Chair Professor and Head of Department of Electronic and Information Engineering at the Hong Kong Polytechnic University, Hong Kong. His research interests include complex network applications, power electronics and chaos-based communications. He is the author of the books Linear Circuit Analysis (London: Addison-Wesley, 1998) and Complex Behavior of Switching Power Converters (Boca Raton: CRC Press, 2003), co-author of Chaos-Based Digital Communication Systems (Heidelberg: Springer-Verlag, 2003), Digital Communications with Chaos (London: Elsevier, 2006), Reconstruction of Chaotic Signals with Applications to Chaos-Based Communications (Singapore: World Scientific, 2007) and Sliding Mode Control of Switching Power Converters: Techniques and Implementation (Roca Raton: CRC Press, 2010) and co-holder of 2 US patents and 2 other pending patents.
    Dr. Tse received the L.R. East Prize from the Institution of Engineers, Australia, in 1987, the Best Paper Award from IEEE TRANSACTIONS ON POWER ELECTRONICS in 2001 and the Best Paper Award from International Journal of Circuit Theory and Applications in 2003. In 2005, he was named an IEEE Distinguished Lecturer. In 2007, he was awarded the Distinguished International Research Fellowship by the University of Calgary, Canada.
    In 2009, he and his co-inventors won the Gold Medal with Jurys Commendation at the International Exhibition of Inventions of Geneva, Switzerland, for a novel driving technique for LEDs. In 2010, he was appointed the Chang Jiang Scholar Chair Professorship by the Ministry of Education of China and the appointment is hosted by Huazhong University of Science and Technology, Wuhan, China.
    Currently Dr. Tse serves as Deputy Editor-in-Chief for the IEEE Circuits and Systems Magazine and Editor-in-
    Chief of IEEE Circuits and Systems Society Newsletter. He was/is an Associate Editor for the IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS PART I FUNDAMENTAL THEORY AND APPLICATIONS from 1999 to 2001 and again from 2007 to 2009. He has also been an Associate Editor for the IEEE TRANSACTIONS ON POWER ELECTRONICS since 1999. He is an Associate Editor of the International Journal of Systems Science, and also on the Editorial Board of the International Journal of Circuit Theory and Applications and International Journal and Bifurcation and Chaos. He also served as Guest Editor and Guest Associate Editor for a number of special issues in various journals.
    Dr. Tse is a Fellow of the IEEE and a Fellow of the Institution of Engineers, Australia.