Lee Center for Advanced Networking
Codes are central to electronic communication and storage. In the 19th-century, Morse code was designed for efficiency so that messages could be sent quickly. Similarly, today we use the jpg file format for efficient storage of photographs. Modern codes often include redundant bits that allow errors to be detected and corrected. Bob McEliece has been developing decoding methods for the new turbo codes that can be used at signal-to-noise ratios near theoretical limits. Babak Hassibi has been investigating space-time codes that enable fast communications with multiple antennas. Michelle Effros and Tracey Ho have been exploring new opportunities for network coding that tolerate packet loss and avoid transmission bottlenecks.