Current Research Interests

• Secure Communications in Cognitive Radio Networks with Finite Alphabet Signaling
• Multi-user MIMO Communications under Finite Alphabet Constraints
• Idea-Proof Hardware Implementation for Wireless Communications
• Underwater Acoustic Communications with Undersea Experiments

Recent Research Interests

RF Wireless Communications and Underwater Acoustic Communications

• Fading Channel Modeling and Simulation
• Joint Channel Equalization and Channel Decoding
• Single-User MIMO Triply Selective Fading Channel Capacity
• Multi-User and Multi-Cell MIMO Triply Selective Fading Channel Capacity

Signal Processing for Communications

• Fading Channel Estimation for MIMO, OFDM and CDMA Systems
• Mobile Speed Estimation for Hierarchical Cellular Networks & Systems
• Algorithm Implementation and Optimization with Commercial Signal Processors
• Optimal Design of Training Sequences for MIMO Triply Selective Fading Channel Estimation

The research topics listed above are/were supported in part by

• National Science Foundation
• Office of Naval Research
• Nortel Networks Inc.
• Mitsubishi Electric Research Lab
• University of Missouri System Research Board
• University of Missouri-Columbia Research Council
• iCORE, Alberta Informatics Circle of Research Excellence
• Natural Science and Engineering Research Council of Canada

Previous Research Interests

• Multidimensional System Theory
• Stability of Nonlinear Feedback Systems
• Multidimensional and Multirate Signal Processing and Filtering

The research topics listed above were supported in part by

• Australian Research Council
• National Science Foundation of China
• Tsinghua University Research Foundation
• Natural Science and Engineering Research Council of Canada