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Despite the notable growing citizens participation enabled by the new advancements in information and communication technologies (ICT), especially with the introduction of web 2.0, developing countries seems to lag way behind in the utilization of these advancements toward the empowerment of citizen's for more participation and democratization in decision making. However, this lag is not only due...
In this paper, a MIMO transmission channel estimation method from baseband to baseband is proposed. For that, a new frame and symbol synchronization technique using five-port receivers output voltages is applied thanks to particular training sequences.
In this paper we describe the performance of the Multiplexer/Demultiplexer (MUX/DEMUX) in the Dense Wavelength Division Multiplexer (DWDM) technology based on arrayed waveguide grating (AWG). The accumulated crosstalk in large-scale AWG solved by the cascade-connection of small AWGs. We propose two branches of 64 channels each have two stages of AWG cascaded as second and third stages. We introduce...
Adsorption of CS 2 on a series of metal oxides (Al 2 O 3 , ZrO 2 , ZnO and CeO 2 ) activated at 723 or 973K was studied at room temperature by FT-IR spectroscopy. In addition to hydrogen thiocarbonate and carbonate species, a new species, characterized by bands in the 1200-1000cm -1 range, was evidenced. Its amount increased by increasing activation...
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