Software Defined Electronics and Virtual Instrumentation

  • Head of Laboratory: Prof. Géza KOLUMBÁN
  • Members: Attila TIHANYI, Tamás KRÉBESZ, Péter KUN, Ákos MÓROCZ
  • Advent of the concept of Software Defined Electronics (SDE) and Virtual Instrumentation (VI) generates a complete change in the design and implementation paradigm of ICT systems. The key issue in the SDE-VI concept is that each application is implemented exclusively in SW run on an arbitrary computing platform. The transformations between the real-world analog signals and the data streams processed on the computing platform is performed by universal HW transformers. The implementation in SW provides a huge level of flexibility, it even enables a complete re-configuration of the ICT system. A further important advantage of SDE-VI concept is that the real-world analog information can be processed by many different SW implementations in a parallel manner, therefore, different information can be extracted from the same analog signal. For example, in receive mode the spectrum of received signal which characterize the radio channel can be determined and, simultaneously, the same received signal can be demodulated. Therefore, adaptive and cognitive radio systems can be built where there is no need to interrupt the communications in the radio channel in order to measure the channel characteristics and there is no need for an extra test signal.
  • The unified theory of SDE concept has been elaborated in our lab. This work has received a widespread attention worldwide, our lecture teaching the theory and practice of SDE concept has been included in the Distinguished Lecturer Program of IEEE Circuit and Systems Society. In 2018, a half-day tutorial was organized on the SDE concept at IEEE ISCAS, the flagship conference of IEEE CASS, in Florence.

Our SDE-VI lab has PXIe, USRP-USB and USRP-UTP type universal HW platforms. Based on these platforms we are conducting research in the framework of a Hungarian project and 5 international collaborations. The Hungarian EFOP project is working on such kind of new ultra-wideband radio communications technologies which can be used in biomedical applications, including human implants.

  • Our lab also has a very solid background in the theory and practice of phase-locked loops. In a collaboration with the Saint Petersburg State University (Prof. Kuznetsov) we study the dynamics and chaotic behavior of phase-locked loops. Since 2001, we have been collaborating with the Centre for Chaos and Complex Networks (City University of Hong Kong, director: Prof Chen) on chaotic circuits and systems. We have a long term fruitful collaboration on chaos-based communications with three Chinese Universities: The Hong Kong Polytechnic University (Prof. Lau), Xiamen University (Prof. Lin Wang) and Xi'an Technological University (Prof. Ren).
  • More information about the research group

Updated: 03-04-2020