Low-complexity rapid timing acquisition constitutes a major challenge in realizing the high potential that ultra-wideband (UWB) wireless technology promises for indoor communications. We derive and test two such timing acquisition algorithms which capitalize on the cyclostationarity that is naturally present in UWB transmissions. Our novel schemes are blind, they do not require multiple antenna...

SUMMARY This study aims how to contain the environment reflection in a dynamic on-body ultra wideband (UWB) channel model. Based on a measurement approach, it is demonstrated that a complete body area channel model can be regarded as a combination of the on-body propagation characteristic and additional components from the environment. Based on such a channel model, the effect of environment re...

We consider differential-pulse position modulation (DPPM) in an ultra wideband (UWB) communication system. A typical format for a DPPM signal in a UWB system is derived from that of a pulse position modulation (PPM) signal. The error probabilities of a UWB DPPM system with receive diversity over additive white Gaussian noise (AWGN) and Nakagami fading channels are derived. Both single-user and ...

Time Hopping (TH) is commonly used for Ultra Wideband Impulse Radio (UWB-IR) systems as a multiple access scheme. Such system suffers from the existence of spectral lines, which in turn require a power back-off of the total signal. Recently, Pulse-based polarity randomization for UWB IR system was proposed. The use of polarity codes can provide additional robustness against the Multiple Access ...

1 Abstract—Time Reversal (TR) is a technique to focus broadband signals tightly in time and space. Previously, this technique has been used in acoustics, medical and especially in underwater communication applications. It is capable of reducing noises, such as: Inter-Symbol Interference (ISI), InterUser Interference (IUI). . . , while the used equipments are more simple than complex Equalizers ...

The method for the signal parameters selection independent of time hopping (TH) codes is presented to improve the processing gain (PG) of the single-user TH ultra-wideband (UWB) systems above a prescribed level. The UWB systems operate in the multi-path channel with narrowband interference (NBI), which is modelled as a zero-mean stationary random process. Binary pulse amplitude modulation as we...

In this paper, we present a novel geometrically driven multilateration technique that is based on Ultra-Wideband (UWB) technology. We refer to our proposed solution as Time Reflection of Arrival (TROA). We demonstrate in this paper that the position estimation error is improved upon by carefully considering the inherent properties of the UWB technology and the reflection properties of transmitt...

Ultra-wideband (UWB) radio offers low power consumption, low power spectral density, high immunity against interference, and other benefits, not only for consumer electronics, but also for medical devices. A cochlear implant (CI) is an electronic hearing apparatus, requiring a wireless link through human tissue. In this paper we propose an UWB link for a data rate of 1.2Mbps and a propagation d...

Commercially available Ultra-Wideband (UWB) systems typically consist of a network of synchronized UWB receivers which track a large number of small, battery powered and inexpensive UWB transmitters. Reported indoor position accuracies lie in the order of decimetres, but suffer from multipath effects and non-line-of-sight (NLOS) conditions. These effects are most prominent while tracking moving...

A novel coplanar waveguide (CPW) fed wide tapered slot antenna (WTSA) is presented in this paper. A wideband CPW-towide slotline (WSL) transition is employed to feed the antenna. The corrugated edge structure and broken line tapered profile are also applied in this design to achieve wideband performance, as well as maintain compact size. A prototype of the antenna is fabricated. The measured re...