UltraWideband (UWB) systems have been utilized and commercialized since the beginning of the 1970s and have been successfully used in ground-, walland foliage-penetration, collision warning and avoidance, fluid level detection, intruder detection and vehicle radar and also for the topics of the intended research project, communication and position-location [1]. Up to now, the latter two fields ...

III

Since the birth of astrophysics, astronomers have been using free-space optics to analyze light falling on Earth. In the future however, thanks to the advances in photonics and nanoscience/nanotechnology, much of the manipulation of light might be carried out using not optics but confined waveguides, or circuits, on a chip. This new generation of instruments will be not only extremely compact, ...

This paper proposes a novel distance measuring scheme for ultra wide-band vehicle radar systems. The proposed scheme measures the distance between a vehicle and an obstacle based on repeated use of a single short pseudo random sequence. The numerical results show that the proposed scheme provides a shorter mean distance measuring time while keeping a similar measurement error performance to tha...

This paper introduces the concept of measuring double directional channels in ultra wideband (UWB) systems. Antennaindependent channel data were derived by doing the measurements in a wooden Japanese house. The data were useful for investigating the impact of UWB antennas and analyzing waveform distortion. Up to 100 ray paths were extracted using the SAGE algorithm and they were regarded as bei...

Unique properties of Ultra Wideband (UWB) radio, including very high data rate, low power consumption and low cost, make it a promising technology for fourth generation short-range wireless mobile communications. This paper introduces the reader to the UWB technology, to its main properties, capabilities and applications. Furthermore, the current status of regulatory issues of UWB radio transmi...