Research Summary

Communication, according to Claude E. Shannon, is to “reproduce at one point either exactly or approximately a message selected at another point”. The central theme in communication theory is to design the transmitters and receivers so that information can be communicated fast and reliably using limited resources (bandwidth, power, processing complexity, etc.), and to quantify theoretical limits on the system performance. The problem is often to balance between different tradeoffs. Currently, the following research topics are being investigated:

• multiple-input multiple-output (MIMO) communications

• cooperative communications and sensor networks

• ultra-wideband (UWB) communications

In the past, the group has worked on various other topics, including

• cyclostationary signal processing, blind channel estimation and equalization

• multi-carrier transmissions such as orthogonal frequency-division multiplexing (OFDM)

• beamforming, space-time code design and capacity analysis

• diversity techniques and performance analysis

• error-control coding

• linear precoding and decoding

The group’s research is supported by the National Science Foundation through Grant Nos. CCF-0431092 and SST-0428040, and by the Rockwell Collins Inc.