HBBCL Ultra-wideband (UWB) Studies

Overview of Collaborative UWB Work at Harvard and AT&T Labs-Research:

This motivated our colleagues at AT&T Labs-Research and us to determine fundamental limitations and available throughputs of the UWB technology. For this reason a thorough study of channel characteristics was inevitable.

Our Journey started in 2001, when we realized that the existing UWB channel propagation studies either contained too small of database to be statistically reliable, were not performed at frequencies of interest, and did not represent the UWB channels . In this light, no true understanding of available throughputs and the design of physical layers existed at the time.

Our effort has been divided into three main themes:

Channel Measurement and Modeling:

Since 2001, our team has worked extremely hard and has produced one of the largest UWB channel database in the world. Our statistically sound channel models are reported in a number of publications and presentations.

Interference Evaluation and Mitigation:

Based on the sound channel models developed, we computed the interference caused from UWB to other existing systems (such as IEEE 802.11a wireless LANs). Please see our IMS 2003 panel presentation UWB Interference Issues for the details of our work.

Physical and MAC Layer Designs:

Based on the above studies, we are now designing efficient Physical and MAC Layers for future UWB systems. The results of this work will be posted on this page in near future.