A/D Precision Requirements for Digital Ultra-Wideband Radio Receivers: Special Issue on Signal Processing for Broadband Communications (Guest Editors: Naresh R. Shanbhag and Keshab K. Parhi)

Authors: Puneet P. Newaskar; Raul Blazquez; Anantha P. Chandrakasan

Source: The Journal of VLSI Signal Processing, Volume 39, Numbers 1-2, January 2005 , pp. 175-188(14)

Publisher: Springer

Buy & download fulltext article:

Price: $47.00 plus tax (Refund Policy)

Abstract:

Ultra wideband radio (UWB) is a new wireless technology that uses narrow pulses to transmit information. Implementing an “all-digital” UWB receiver has numerous potential benefits ranging from low-cost and ease-of-design to flexibility. Digitizing an RF signal near the antenna, however, introduces its own set of challenges and has traditionally been considered infeasible. A high-speed, high-resolution analog-digital converter (ADC) is difficult to design, and is extremely power-hungry. The viability of an “all-digital” architecture, therefore, hinges upon the specifications of this block. In this paper, we demonstrate that 4 bits of resolution are sufficient for reliable detection of a typical UWB signal that is swamped in noise and interference.

Document Type: Research article

DOI: http://dx.doi.org/10.1023/B:VLSI.0000047279.58292.83

Affiliations: 1: Microsystems Technology Laboratory, MIT Cambridge, MA 02139, USA

Publication date: 2005-01-01