The effects of different UWB antennas on body area propagation channel is analyzed. Different orientations of directional antennas and different spacings 13 between planar antennas and the body are investigated in an on-body scenario. Time domain channel parameters, e.g. mean delay and delay spread, are 15 extracted from measurement data. The distribution of the channel parameters allows classi...

Linear space-time equalization is shown to be effective in coping with the complicated propagation conditions for wireless broadband communication in an industrial indoor environment. This is demonstrated by realistic simulations that use real channel measurement data obtained from a vector channel sounder for modeling the influence of the radio channel. The system parameters are similar to the...

Besides security against classical cryptanalysis, its important for cryptographic implementations to have sufficient robustness against side-channel attacks. Many countermeasures have been proposed to thwart side channel attacks, especially power trace measurement based side channel attacks. Additionally, researchers have proposed several evaluation metrics to evaluate side channel security of ...

Abstract according to the measurement principle and performance requirements of acoustic Doppler velocity profile, a circuit for weak frequency signal processing is designed. The principle, structure, data comparison before after accuracy analysis are introduced. application instrument carried out relevant standards. experimental results show that realizes constant amplitude amplification wide ...

The development of a planar wideband directional channel model applicable to UMTS micro-cells is addressed. The model, a statistical one based on geometrical considerations, is implemented and simulated, its assessment being performed based on global parameters of channel impulse responses obtained from measurement results. Exemplifying results for the directional channel impulse response are d...

We report an experimental demonstration of a bit-flip error-rejection protocol for error-reduced transfer of quantum information through a noisy quantum channel. In the experiment, an unknown state to be transmitted is encoded into a two-photon entangled state, which is then sent through an engineered noisy quantum channel. At the final stage, the unknown state is decoded by a parity measuremen...

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...

Time-reversal is addressed for imaging and classifying elastic targets situated in an acoustic waveguide. It is assumed that the target-sensor range is large relative to the channel depth. We first investigate the theory of wideband time-reversal imaging of an extended elastic target for which the target dimensions are large relative to the principal wavelengths. When performing time-reversal i...

In this paper we identify important characteristics of a fading/shadowing fading channel and present the work of measurement-based channel modeling for packet-level network queueing analysis. Our integration of wireless channel modeling and data queueing analysis at the packet-level provides a unique approach to study the eeect of various channel dynamics on high layer network performance, whic...

This paper presents the method of measuring the feedback channel, which is developed between the transmit and receive antennas of a wireless repeater by receiving the transmit singal from its tranmit antenna at the receive antenna of the identical repeater, and experiment results otained by anlyzing the measurements. This experiment uses 2GHz W-CDMA signal and is carried out near a highway. The...