Ultra Wideband (UWB) communication technology has attracted considerable attention by researchers in recent years because of its appealing features and its several applications it offers in many areas (Win & Scholtz, 1998; Fontana, 2007; Ghavami et al, 2007). An UWB system is characterised by very short-duration pulses (usually on the order of a nanosecond) with a low duty cycle. It offers low ...

Ultra Wide-Band (UWB) is a promising physical layer technology which potentially will enable low power, low cost devices with applications for Personal Area Networks (WPAN) and for Body Area Networks (BAN). One of the main UWB technology candidates, Impulse-Radio (IR-UWB), utilizes very short time domain pulses which are low power and difficult to detect. This raises the question of how to desi...

In this paper, subject-specific narrowband (2.45 GHz) and ultra-wideband (3–10.6 GHz) on-body radio propagation studies in wireless body area networks (WBANs) were performed by characterizing the path loss for eight different human subjects of different shapes and sizes. The body shapes and sizes of the test subjects used in this study are characterised as thin, medium build, fatty, shorter, av...

Ultra-wideband (UWB) radio, a new carrierless communication scheme using impulses, is a candidate technology for future communication and ranging applications. Recent progress on both in the technical and regulatory side of this technology has made this possible. The fine time resolution and material penetration capability of UWB signals has created a vision of novel ranging and positioning app...

Impulse radio ultra wideband (IR-UWB) communication is becoming an important technology for future Wireless Personal Area Networks (WPANs). One of the critical challenges in IR-UWB system design is the inter-pulse interference (IPI). A Transmit-reference (TR) receiver is proposed to completely remove the IPI especially at low input frame energy-tonoise-ratio (Ef/No) values. This receiver is bas...

A localization system is a network of nodes, which is used by an unknown-location node to determine its physical location. The Global Navigation Satellite System, GNSS (HofmannWellenhof, 2008) is an example of a widely used outdoor localization system. However, outdoor localization systems perform poorly in indoor environments due to strong signal attenuation and reflection by building material...

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 ...

<span lang="EN-US">A survey on ultra-wideband complementary metal-oxide semiconductor (CMOS) power amplifiers for wireless body area network (WBAN) applications is presented in this paper. Formidable growth the CMOS integrated circuits technology enhances development biomedical manufacture. WBAN a promising mechanism that collects essential data from wearable sensors connected to and tran...

This paper presents the integrated circuit design of an ultra-wideband (UWB) transceiver for a wireless endoscope that enables real-time diagnosis with high resolution images. The implemented UWB transceiver is a non-coherent transmit reference (TR) architecture with differential binary phase shift Keying (DBPSK) modulation. All-digital pulse generator (PG) and merged radio frequency (RF) front...

A technology called UWB (Ultra Wideband) has gained recent attention. Using UWB, the scarce spectrum resource could be shared by several users. By spreading the signal over a wide frequency range, the average power per Hertz will be very low. The signal is very noise-like and is claimed to be able to co-exist with existing systems and services. The FCC and ETSI are considering allowing UWB, in ...