Yassine Salih Alj

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Ultra-Wideband (UWB) has been recently promoted as a very promising technology for wireless communications. Rapid and accurate timing acquisition of ultra-short pulses and the high sampling rates create challenges for both signal acquisition and the overall UWB transceiver implementation, and even more so under non-ideal conditions. In this paper, we(More)
The emergence of new wireless technologies opened new opportunities to develop more efficient information systems. RFID is among those technologies, which extended the potential of wireless identification, and represent a potential replacement to old-fashioned identification systems such as the barcode system in retail sales. This paper presents a new(More)
In this contribution, the On-body propagation measurements at 40m underground mine gallery and their statistical analysis are presented. Monopole antennas were installed on the body in order to form three on-body channels, namely belt-chest, belt-wrist and belt-head. The channel parameters of a 2 × 2 Multiple-Input Multiple-Output (MIMO) On-body system are(More)
A major application of wireless communications in confined indoor areas is positioning. Ultra-Wideband (UWB) has been recently promoted as a very promising physical support for such use. However, fast and accurate timing acquisition of the ultra-short pulses transmitted in indoor environments is significantly challenging, and even more so in hostile areas(More)
In this paper, the effects of multipath interferences on the performance of a multiuser ultra-wideband (UWB) fast acquisition system operating in an underground indoor fading channel are evaluated and compared. Various pulse shapes are considered with different scenarios of interference and Gaussian noise in extensive Monte-Carlo simulations. The results(More)
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