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...

A reaction diffusion system with a distributed time delay is proposed for virus spread on bacteria immobilized on an agar-coated plate. A distributed delay explicitly accounts for a virus latent period of variable duration. The model allows the number of virus progeny released when an infected cell lyses to depend on the duration of the latent period. A unique spreading speed for virus infectio...

The performance of a code tracking loop for a spread spectrum signal can be severely deteriorated in the presence of an interference signal. The interference signal is modeled as a signal with the same code but with a different delay and carrier frequency. The variance of the tracking delay error is derived in terms of loop bandwidth, chip duration, the interference and signal power and bandpas...

In this paper, we investigate the optimisation of the loop filter for delay tracking loops in direct sequence spread spectrum systems. We search for a good trade-off between reducing noise effects and having a sufficiently reactive loop. This study is done on both the initial tracking phase, where the loop must compensate acquisition errors, and the permanent one, where the loop must follow del...

Video conference is an attractive and promising application which allows immersive communication and discussion among people at different and distant places. However, its stringent delay and bandwidth requirements limit its scale and spread over current Internet. This paper introduces a network coding algorithm for video conference system to minimize the maximal transmission delay during multic...

Video conference is an attractive and promising application which allows immersive communication and discussion among people at different and distant places. However, its stringent delay and bandwidth requirements limit its scale and spread over current internet. This paper attempts to introduce the prosperous technology of network coding (NC) into video conference to minimise the maximal trans...