Numerical precision requirements on the multiband ultrawideband system for practical consumer electronic devices

Abstract

This paper discusses the requirements on the numerical precision for a practical multiband ultra-wideband (UWB) consumer electronic solution. To this end, we first present the possibilities that UWB has to offer to the consumer electronics market and the possible range of devices. We then show the performance of a model of the UWB baseband system implemented using floating point precision. Then, by simulation we find the minimal numerical precision required to maintain floating-point performance for each of the specific data types and signals present in the UWB baseband. Finally, we present a full description of the numerical requirements for both the transmit and receive components of the UWB baseband. The numerical precision results obtained in this paper can then be used by baseband designers to implement cost effective UWB systems using system-on-chip (SoC), FPGA and ASIC technology solutions biased toward the competitive consumer electronics market.