A Single Chip, Low Power, Impulse-UWB Transceiver for Low-Rate, Indoor, Wireless Systems

Speaker: Mr. Ian O'Donnell, UC BerkeleyAbstract: This talk describes the system architecture and circuit design constraints for a single-chip, impulse-based Ultra-Wideband transceiver. Targeting a sensor network application, the radio supports ranging and communication over a distance of 10m with a 1mW power budget at 100kb/s. Using simple digital switches to generate a narrow pulse, energy is transmitted in the low frequency band (DC-960MHz) allocated by the FCC for imaging systems and surveillance devices. Reception, after gain and filtering, occurs in a bank of 1-bit A/D converters that capture the pulse in an adjustable window of 16 to 64ns, sampled at 2 GSamples/s. This data is passed to the digital backend which performs matched filtering, acquisition, synchronization, and demodulation. The implementation issues of this system and simulation results will be discussed.Bio: Ian D. O'Donnell received the B.S. and M.S. degrees in Electrical Engineering and Computer Science from the University of California at Berkeley in 1993 and 1996 respectively. His master's topic was in the area of digital, low-power, CMOS circuit design for a wireless LAN receiver as part of the InfoPad project. From 1996 to 1999 he worked at Silicon Graphics, Inc. as a digital ASIC designer, and in 1999 he joined NVIDIA, Inc. where he worked on high-speed serial design. In 1998 he returned to Berkeley, joining the Berkeley Wireless Research Center to work in the area of low-power, integrated, picocellular radios. His Ph.D. research focus is the design and implementation of an impulse-based, low-power Ultra-Wideband transceiver in 0.13 micron CMOS suitable for sensor network applications.Host: Dr. Keith Chugg, chugg@usc.edu

Location: Hedco Neurosciences Building (HNB) - 107

Audiences: Everyone Is Invited

Contact: Mayumi Thrasher