• Wireless and Mobile Communications
• Cooperative Relay Communications
• Spatial Diversity Techniques
• Multiple-Input Multiple-Output (MIMO) Systems
• Simultaneous Wireless Information and Power Transfer (SWIPT)
• Cognitive Radio and Spectrum Sharing Techniques
• Hybrid Satellite-Terrestrial Relay Systems
• Physical Layer Security
• Wireless Body Area Networks
• Internet-of-Things (IoT) Networks
• Molecular Communications and Nano-networking