Physical layer security for resilient CPS
To ensure security, many people utilize cryptology based technologies, like RSA algorithm. However, breaking these algorithms is possible although it takes very long time. Physical layer security techniques provide additional security by physically blocking accesses of unauthenticated users to networks. For example, MIMO beamforming technique can provide physically safe wireless channels for authenticated users .The advanced communication team studies about physical layer security techniques: security capacity, MIMO beamforming, anti-jamming, etc.
As autonomous vehicles market has been increasing, vehicular communications have been more important and in the spotlight. Vehicular communication is divided into two main categories, the vehicle to everything(V2X) and In-vehicle network(IVN). The V2X is all of the things to communicate with a vehicle such as vehicles, devices, infrastructure, etc. In-vehicle network is the wired communication to support high-speed and robust data processing. We are studying on the high-speed in-vehicle communication systems called TURBO CAN and Thunderbus to effectively support data traffic such as the sensors, cameras, infotainment systems with a venture company VSI. Additionally we are also researching vehicular security to prevent various attacks using these technologies.
Network performance analysis for CPS and IoT
Performance analysis for recent complicated wireless systems is quite difficult because of huge number of nodes and its complex network topologies with the introduction of CPS and IoT. Therefore, recent performance analysis results rely on unrealistic simplified models or computer simulations which take long time. To overcome this problem, we use stochastic geometry for analysis of D2D, full-duplex systems, etc.
Wireless Body Area Network (WBAN)
Wireless body area network (WBAN) provides communications around human bodies for wearable & implant medical & non-medical applications. In WBAN topology, each node which is in the vicinity of or inside user’s body communicates with other nearby nodes (~3m). Because of their operating conditions, the WBAN device designers should consider unique properties: low transmit power, small form factor, on/in-body channel propagation, etc. This team focuses on the physical/network layer issues of WBAN such as body channel sounding, low-power modulation and demodulation, MAC layer design, etc.
- Resilient cyber-physical systems research (Ministry of Science, ICT and Future Planning (MSIP) / Institute for Information & communications Technology Promotion (IITP)
- Protection technique for mobile wideband communication signal (ADD)
- Smart convergence technologies for UAV safety control in urban areas (Ministry of Science, ICT and Future Planning (MSIP))