Research Interests

I am interested in communication theory with emphases on coding, wireless communications, and wireless networks.

I am currently working on the theoretical and practical challenges of designing systems and networks that use multiple antennas. There are many challenges in designing space-time coding and beamforming schemes for multiple-input multiple-output (MIMO) systems. One of these challenges is to study the theoretical tradeoffs and limits from an information theory perspective. Another is to design practical coding and beamforming schemes that satisfy those limits using signal-processing methods.

On a related topic, I am looking at optimizing resources across different layers of a wireless network. This is in particular important for mobile ad-hoc networks and wireless sensor networks where the traditional layer hierarchies may not exist. I am interested in cross-layer adaptation, network connectivity, and power-aware wireless network protocols especially for networks with multiple-antenna nodes.

Also, I have been involved in developing data compression algorithms especially for image and video coding. My recent work in this field concerns the transmission of multimedia information over wireless networks and the Internet. I am interested in developing new coding schemes and network protocols that improve end-to-end recovery and enhance the quality of service.

Every Important Idea Is Simple !

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