An Analog/Digital Baseband Processor Design of a UWB Channelized Receiver for Transmitted Reference Signals

The frequency channelized receiver enables the use of practical analog-to-digital converters (ADC) to digitize ultra-wideband (UWB) signals. The design issues of the analog and digital baseband processor for the channelized receiver in a UWB transmitted reference (TR) system are investigated. In the analog part, the receiver performance is shown to be weakly dependent on the analog filter bandwidth, the filter order, and the ADC oversampling ratio assuming white input noise. In the digital part, the coarse acquisition performance is shown to be significantly better in a channelized receiver than in a fullband receiver. The implementation issues for fine synchronization and correlation window length are also studied. Lei Feng received the B.S. and M.S. degree in electrical engineering from Peking University, Beijing, in 1997 and 2000, respectively. He is currently working toward the Ph.D degree in electrical engineering at University of Southern California, Los Angeles, CA. His doctoral research focuses on the design of wideband communication transceivers for wireless and wireline applications. Won Namgoong received the BS degree in Electrical Engineering and Computer Science from the University of California at Berkeley in 1993, and the MS and Ph.D. degrees in Electrical Engineerig from Stanford University in 1995 and 1999, respectively. In 1999, he joined the faculty of the Electrical Engineering Department at the University of Southern California, where he is an Assistant Professor. His current research areas include wireless/wireline communication systems, signal processing systems, RF circuits, and low-power/high-speed circuits. In 2002, he received the National Science Foundation (NSF) CAREER Award.