Prof. Gregory W Wornell

Professor Wornell's research interests span several areas of signal processing, communication networks, and information theory, and include algorithms and architectures for wireless networks, broadband systems, and multimedia environments. This research investigates a broad spectrum of issues, from fundamental limits, to algorithm structures, to implementation issues.

He leads the group's digital communication networks laboratory, which includes a wireless testbed operating in the 900 MHz range to carry out experiments on novel algorithms and architectures for wireless communications. The testbed consists of analog front-end and DSP hardware, controlled by a back-end network. Currently under development, in collaboration with Professors Sodini, Lee, and Chandrakasan of the Microsystems Technology Lab (MTL), is the architecture and systems level design for a Gigabit/sec wireless local-area network (LAN) operating in the 5.8 GHz band.

Some of the topics of current interest are:
(*) physical and network layer issues in broadband multimedia networks, including source and channel coding, data security and privacy, and modeling and control of data traffic
(*) smart antenna arrays and space-time algorithms
(*) interference suppression and management algorithms, including diversity, CDMA, equalization, and multiuser-detection techniques
(*) algorithms, architectures, and protocols for wireless networks, especially ad-hoc networks
(*) modeling, analysis, and interpretation of neural signals
(*) application-specific networks, including sensor networks; distributed algorithms
(*) digital watermarking and authentication of multimedia content
(*) algorithmic and coding techniques for reliable circuits and microsystems