Communications theory, wireless communications

Statistical signal processing

Information theory

Cognitive radios, Cooperative communications, Wireless sensor networks, Collaborative information processing

Dynamic spectrum leasing (DSL)

Distributed coding, joint source-channel coding 

Information theoretic limits of networked-control systems

Distributed detection/estimation/tracking and data/decision fusion for mobile multi-targets in hybrid mobile ad-hoc sensor networks.

Quantum information processing

Applications of Game theory

Telemedicine