G-J van Rooyen, PhD

Senior Lecturer, University of Stellenbosch
Stellenbosch, South Africa

Research field: Electrical and Electronic Engineering - Telecommunications
Telecommunications, Signal Processing, Mobile and Web Technology

Publications

Conference Proceedings (13)
- Arno Barnard, G-J Van Rooyen (2011) The Sumbandila Satellite Experiments Payload - Taking the Step to Space. In Proceedings of the 62nd International Astronautical Congress.
- Stephan Gouws, G-J Van Rooyen, Herman A Engelbrecht (2010) Measuring Conceptual Similarity by Spreading Activation over Wikipedia's Hyperlink Structure. In Proceedings of the 2nd Workshop on The People's Web Meets NLP: Collaboratively Constructed Semantic Resources.
- K Blum, G-J Van Rooyen, HA Engelbrecht (2010) Spatial Audio to Assist Speaker Identification in Telephony. In Proceedings of the 17th International Conference on Systems, Signals and Image Processing.
- E Van Der Westhuizen, G-J Van Rooyen (2009) Baseband carrier recovery and phase tracking as a Doppler compensation technique for a zero-IF SDR. In SATNAC 2009.
- K Botha, E Van Der Westhuizen, G-J Van Rooyen (2008) A Digital Modem Card for a Multi-channel Satellite Communications Payload. In SATNAC 2008.
- W Kriegler, G-J Van Rooyen (2008) A Fixed-Point DSP Architecture for Software-Defined Radio. In SATNAC 2008.
- J J De Witt, G-J Van Rooyen (2008) A self-calibrating quadrature mixing front-end for SDR, 117-120. In Radio and Wireless Symposium, 2008 IEEE.
  http://dx.doi.org/10.1109/RWS.2008.44...
- K F Mathapo, G-J Van Rooyen (2006) A Software Defined Radio AIS for the ZA002 Satellite. In 2006 AIAA/USU Conference on Small Satellites.
- J J De Witt, G-J Van Rooyen (2006) Novel IQ imbalance and offset compensation techniques for quadrature mixing radio transceivers. In SATNAC 2006.
- G-J Van Rooyen, J G Lourens (2005) Non-iterative compensation for software-defined radio quadrature front-end inaccuracies, 598-601. In Wireless Communications, Networking and Mobile Computing, 2005. Proceedings. 2005 International Conference on.
  http://dx.doi.org/10.1109/WCNM.2005.1...
- See all
Journal Article (5)
- MJ Booysen, JS Gilmore, S Zeadally et al. (2011) Machine-to-Machine (M2M) Communications in Vehicular Networks. In KSII Transactions on Internet and Information Systems (submitted for publication).
- MJ Booysen, S. Zeadally, G.J. van Rooyen (2011) Survey of media access control protocols for vehicular ad hoc networks, 1619–1631. In Communications, IET 5 (11).
  http://ieeexplore.ieee.org/xpls/abs_a...
- Tielman Terblanche, G-J Van Rooyen, Cornie Scheffer (2010) Estimation of heart rate from an apnoea detection device using matched filtering, 273-288. In International Journal of Medical Engineering and Informatics 2 (3).
- J J De Witt, G-J Van Rooyen (2009) A Blind I/Q Imbalance Compensation Technique for Direct-Conversion Digital Radio Transceivers, 2077-2082. In IEEE Transactions on Vehicular Technology 58 (4).
  http://ieeexplore.ieee.org/xpls/abs_a...
- G-J Van Rooyen, J G Lourens (2000) A quadrature baseband approach to direct digital FM synthesis, 227-230. In Broadcasting, IEEE Transactions on.
  http://dx.doi.org/10.1109/11.892160
Magazine Article (3)
- G-J Van Rooyen (2008) Ethics and profit in the electronics sector -- a fine balance. In EngineerIT.
- G-J Van Rooyen (2008) Redefining Radio. In EngineerIT.
- G-J Van Rooyen, J G Lourens (2001) Advances in Direct Digital Frequency Synthesis, 39-41. In Elektron.
Patent (1)
- G-J Van Rooyen, J G Lourens (2002) A quadrature baseband direct digital synthesizer with digital spur compensation.
Report (2)
- G-J Van Rooyen (2011) Content-based recommendation using spreading activation over a movie connection graph, 1-19..
- H A Engelbrecht, G-J Van Rooyen (2009) An Overview of Recommender Systems for E-Commerce Platforms, 1-14..
Thesis (2)
- G-J Van Rooyen (2005) Baseband Compensation Principles for Defects in Quadrature Signal Conversion and Processing.
  http://staff.ee.sun.ac.za/~gvrooyen/G...
- G-J Van Rooyen (2000) An Analysis of Quadrature-Baseband Direct-Digital Synthesis.

Biographical Information

I'm a Senior Lecturer in Telecommunications at Stellenbosch University in South Africa. I spend most of my research time at the Electronic Media Laboratory (the "Medialab") as the lab's director. I focus on new media technologies: applying cutting-edge research in Telecommunications, Signal Theory and Software Engineering to the emerging ways in which humans communicate with each other and with computers. Web applications, mobile technology, and futuristic stuff like augmented reality (AR) are what drive me.

CV

Professional Experience

2001 - Present

Senior Lecturer at University of Stellenbosch
Stellenbosch, South Africa
Classes taught:
Signals and Systems 244
Telecommunications 314
Signals and Systems 315
Stochastic Signal Theory 713
Communication Systems 713
Wireless Systems PDE

Education

Jan 2001 - Apr 2005

University of Stellenbosch in Stellenbosch, South Africa
PhD (Electronic Engineering)

Jan 1995 - Dec 1998

University of Stellenbosch in Stellenbosch, South Africa
BEng (Electronic Engineering)

Consulting Services

Center for Electrical and Electronic Engineering, Stellenbosch University, Stellenbosch, South Africa