Ranging With Ultrawide Bandwidth Signals in Multipath Environments

“ Ultra - Wideband Ranging in Dense Multipath Environments

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...

Backscatter Communication using Ultrawide Bandwidth Signals for RFID Applications

Future advanced radiofrequency identification (RFID) systems are expected to provide both identification and high-definition localization of objects with improved reliability and security while maintaining low power consumption and cost. Ultrawide bandwidth (UWB) technology is a promising solution for next generation RFID systems to overcome most of the main limitations of current narrow bandwi...

Performance Assessment of Navigation Signals in Realistic Multipath Environments

A major error source within global navigation satellite systems, such as the Global Positioning System or the future European satellite navigation system Galileo, comes from multipath, the reception of additional signal replica due to reflections caused by the receiver environment. The reception of multipath introduces a bias into the time delay estimate of the delay lock loop of a conventional...

Modeling and Characterization of Multipath in Global Navigation Satellite System Ranging Signals

Propagation characteristics of ultrawide-bandwidth pulsed Gaussian beams

The propagation characteristics of a beam generated by driving an aperture with an ultrashort, hence ultrawide-bandwidth, space-time Gaussian pulse are considered. It is shown analytically with an approximate form of the solution that the beam intensity and the beam energy have different diffraction lengths and rates of beam spread in the far field. These beam properties are also discussed for ...