Ultra Wide Band (UWB) is a high rate, short range radio communication technique using frequency bands in the order of 500 MHz to several GHz. This thesis presents an experimental characterisation of the UWB propagation channel in order to propose models for the development of such systems.Two proposed sounding techniques enable the measurement of the static channel in the 3.1 – 11.1 GHz band and real time channel sounding in the 4 – 5 GHz band. Several measurement campaigns performed in the indoor office environment are detailed. The analysis of the collected data highlights the large scale parameters and small scale fading of the static channel, with a particular study on the influence of the frequency. Specific studies are dedicated to th...
The following manuscript describes the 5 years work dedicated to the developments of mm-Wave antenna...
In the last years, Wireless Sensor Networks ‘WSN’ knew a tremendous evolution which attracted many a...
Ethernet network connections are becoming more numerous in the domestic domain. In this work, the tr...
Ultra Wide Band (UWB) is a high rate, short range radio communication technique using frequency band...
Radio communications using very broad frequency bands (UWB) have been developed rapidly since the ea...
Wireless telecommunications have been driven by a sustained interest for more than a decade. Compare...
Wireless mobile telecommunications have known a growing interest formore than one decade. They break...
Rapporteurs :M. SYLVAIN Professeur à l'Université de Marne-la-Vallée,J—F DIOURIS Professeur à l'Ecol...
The need to improve the capacity of wireless networks, for the data transmission and multimedia appl...
To cope with the saturation of the electromagnetic spectrum, telecommunications world leaders are de...
Multiple-Input Multiple-Output (MIMO) communications improve the data rates and the robustness of a ...
Applying Ultra Wide Band (UWB) spectral coding to surface acoustic wave (SAW) devices, usedas passiv...
Due to the open nature of wireless communications, the transmissions on such mediums are subject to ...
In wireless communications systems, the transmission channel between the transmitter and the receive...
The following manuscript describes the 5 years work dedicated to the developments of mm-Wave antenna...
In the last years, Wireless Sensor Networks ‘WSN’ knew a tremendous evolution which attracted many a...
Ethernet network connections are becoming more numerous in the domestic domain. In this work, the tr...
Ultra Wide Band (UWB) is a high rate, short range radio communication technique using frequency band...
Radio communications using very broad frequency bands (UWB) have been developed rapidly since the ea...
Wireless telecommunications have been driven by a sustained interest for more than a decade. Compare...
Wireless mobile telecommunications have known a growing interest formore than one decade. They break...
Rapporteurs :M. SYLVAIN Professeur à l'Université de Marne-la-Vallée,J—F DIOURIS Professeur à l'Ecol...
The need to improve the capacity of wireless networks, for the data transmission and multimedia appl...
To cope with the saturation of the electromagnetic spectrum, telecommunications world leaders are de...
Multiple-Input Multiple-Output (MIMO) communications improve the data rates and the robustness of a ...
Applying Ultra Wide Band (UWB) spectral coding to surface acoustic wave (SAW) devices, usedas passiv...
Due to the open nature of wireless communications, the transmissions on such mediums are subject to ...
In wireless communications systems, the transmission channel between the transmitter and the receive...
The following manuscript describes the 5 years work dedicated to the developments of mm-Wave antenna...
In the last years, Wireless Sensor Networks ‘WSN’ knew a tremendous evolution which attracted many a...
Ethernet network connections are becoming more numerous in the domestic domain. In this work, the tr...