Pulsed ultra-wideband (UWB) transceivers offer the potential for ultra-low-energy/bit operation because the signals are inherently duty-cycled. By eliminating components with long startup times, such as a phase-locked loop, all components in a pulsed-UWB transceiver can be disabled during the interval between pulses. This work focuses on an all-digital, pulsed-UWB transmitter that requires no a...

We present an overview of physical and mediumaccess-control (MAC) layer research for communication and localization in ultra-wideband (UWB) sensor networks for industrial applications, and provide a summary of our results obtained under the umbrella of the EU Integrated Project PULSERS. The focus of our work is on fundamental questions about UWB channel modeling, UWB channel capacity, efficient...

This paper proposes some approaches to model Ultra Wideband (UWB) antenna arrays. Based on the array factor, often stipulated as not adapted for the description of the properties of UWB arrays in the literature, an analytical expression of the beampattern is developed. The achieved results are coherent with other formulations and empiric studies proposed in the literature. Furthermore, a time-f...

The extremely high sampling rate is a challenge for ultra-wideband (UWB) communication. In this paper, we study the compressed sensing (CS) based impulse radio UWB (IR-UWB) signal detection and propose an IR-UWB signal detection algorithm based on compressive sampling matching pursuit (CoSaMP). The proposed algorithm relies on the fact that UWB received signal is sparse in the time domain. The ...

CMOS Integrated Circuit Design for Ultra-Wideband Transmitters and Receivers. (August 2009) Rui Xu, B.S. , Southeast University, China; M.S., Southeast University, China Chair of Advisory Committee: Dr. Cam Nguyen Ultra-wideband technology (UWB) has received tremendous attention since the FCC license release in 2002, which expedited the research and development of UWB technologies on consumer p...

This paper proposes a synchronization algorithm for time-hopping pulse position modulation ultra wideband (THPPM-UWB) systems to detect the first symbol arrival time. The transmission signals of UWB systems usually use baseband pulses with very short duration. We would present an overview of the principles of UWB impulse signals, and focus on the synchronization technique of symbol arrival time...

The central challenge of ultra-wideband (UWB) radio is to overcome its intrinsic complexity. This paper argues for the use of high-speed sampling and a front-end FFT as the paradigm of choice for robust performance and low energy consumption in certain ultra-wideband designs. Assuming the need to approach optimal performance, it highlights the complexity advantage of frequency domain (FD) over ...

A unique feature of ultra wideband (UWB) technology lies in its dual capabilities of communication and ranging. As UWB pulses are very narrow, very strict synchronization requirements are incurred as timing errors induce severe performances degradation. In this work, using second order statistics of the received signals, we present the Ziv-Zakai lower bound (ZZLB) for the time delay estimation ...

In this research, a full wave simulator, IE3D, is used to analyze an ultra-wideband (UWB) antenna, where Taguchi’s method is applied as an external optimizer to drive IE3D and optimize the UWB antenna. The efficiency of this design procedure demonstrates the excellent optimization performance of Taguchi’s method. The desired frequency response of the UWB antenna is successfully achieved with on...

This paper describes the measurement techniques of emissions from UWB devices discussed in ITU-R task group (TG) 1/8 to study the compatibility between ultra-wideband (UWB) devices and radiocommunication services. This paper also provides the background idea behind the measurement methods, as the final output of the discussion, i.e. ITU-R Recommendation, will not contain any citations to the re...