Visible Light Communications (VLC)
High-bandwidth communication using LED transmitters and photodetector or smartphone receivers — covering modulation, equalisation, OFDM, organic-LED systems, indoor positioning, and security.
- Visible Light Communications based on Organic LEDs (OLEDs)
- Smartphone-to-Smartphone Visible Light Communications
- Visible Light Communication-based Indoor Localization
- Advanced Security in Visible Light Communication Systems
- OFDM and CAP Modulation for Indoor VLC Links
Free-Space Optics (FSO)
Outdoor and long-distance optical wireless links — atmospheric turbulence and fog modelling, polarisation-shift keying, partially coherent beams, media diversity, ground-to-train and relay-based systems.
- Free Space Optics for Ground-to-Train Communications
- Atmospheric Fog and Turbulence Modelling in FSO
- All-Optical FSO Relay Systems under Atmospheric Turbulence
- Subcarrier Intensity Modulated FSO Systems
- VCSEL-based Optical Sources for FSO
Optical Camera Communications (OCC)
Image-sensor-based reception of optical signals — channel modelling, screen-to-camera links, machine-learning-driven decoding, and OCC-based wireless sensor networks.
- Experimental Channel Evaluation of OCC for Wireless Sensor Networks
- Optical Camera Communications for Internet-of-Things Applications
- Image Restoration and Data Detection for Screen-to-Camera OCC
- Machine Learning for VLC/OCC Indoor Positioning
- Non-Line-of-Sight MIMO VLC with Camera Receivers
Hybrid Optical / RF Systems & LiFi
Co-existence and integration of optical wireless with radio-frequency networks — LiFi systems, hybrid handover, RF/optical antennas, and security/localisation in dual-mode links.
- Hybrid Radio-Frequency and Visible Light Communication Systems (LiFi)
- Wireless Handover Solutions in Vehicular VLC
- Hybrid Indoor Optical and RF Wireless: Security and Localization
- A Hybrid Free Space Optics / Radio Frequency Antenna
- Hybrid Free-Space Optical and Visible Light Communication Link
Wireless Sensor Networks & Optical Sensing
Optical communication links serving sensor networks, IoT and environmental monitoring, plus fibre-based sensors for chemical and physical sensing.
- OCC for Wireless Sensor Networks
- OCC-based Communication Systems for IoT Applications
- Long-Period Fibre Grating as Gas Sensor for Environmental Monitoring
- Mathematical Modelling of Long-Period Gratings
- Activity Recognition in Monitored Environments using Utility Meter Disaggregation
Photonic Networks & Optical Switching
High-speed photonic infrastructure — all-optical packet switching, OTDM, semiconductor optical amplifiers, ROADMs, dispersion compensation, and intelligent routing in photonic networks.
- All-Optical Packet Switching Routers (PPM-based)
- Optical Time-Division Multiplexing Packet Switching with SMZ Switch
- Coherent Optical OFDM Modem for Long-Haul Transmission
- Cellular Indoor Optical Wireless Communication Systems
- Chromatic Dispersion Compensation with Optical All-Pass Filters
Modulation, Coding & Signal Processing for OWC
Advanced modulation, equalisation, machine-learning aided receivers, pulse-time-modulation families, and physical-layer network coding for optical wireless links.
- Equalisers to Increase Bandwidth of VLC Systems
- Performance Optimisation Mechanisms for OWC Systems
- Wavelets and Artificial Neural Networks for Indoor Optical Wireless
- Digital and Hybrid Pulse Interval / Pulse Time Modulation
- Physical Layer Network Coding for FSO
Radio-over-Fibre & Convergent Networks
Radio-over-fibre and FSO transport for backhaul and indoor coverage, including 4G/LTE-RoF integration and convergent indoor/outdoor wireless-optical architectures.
- Radio-over-Fibre (RoF) and FSO (RoFSO) Systems for Indoor and Outdoor Building Networks
- Design and Optimisation of 4G LTE and Radio-over-Fibre Systems
- Efficient Modulation Schemes for High-Speed Radio-over-Fibre
Secure Optical Communications & Chaos
Physical-layer security, chaos-based encryption and synchronisation, and security frameworks for optical and hybrid wireless networks.
- Chaos Communications
- Observer-based Chaotic Synchronization in Secure Communication
- Advanced Security in Visible Light Communication Systems
- Network Security Framework at the Physical Layer
