The advanced communication team studies about latest physical and network layer issues for high data rate, low-power and resilient communication systems for CPS/IoT and bio-medical applications.
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.
Intersection movement assist, driving safety support system, inter-vehicle distance maintenance are necessary to commercialize the autonomous vehicle. To supply those functions, a research of V2X and in-vehicle communication is required. The vehicle to everything(V2X) is all of the things to communicate with a vehicle such as vehicles, devices, infrastructure, etc. In-vehicle communication is the wired communication to support high-speed and robust data processing. Our team is studying on the high-speed in-vehicle communication system to effectively support increasing data traffic such as the sensors, cameras, infotainment systems, and so on. We are also researching vehicular security to prevent attacks coming from V2X interface.
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)