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An one-step hydrothermol method was developed to synthesize TiO2/Graphene composites (TiO2/GR) by employing graphene oxide and tetra-n-butyl titanate. The factors affecting the photocatalytic activity of TiO2/GR were studied by using orthogonal design, and the optimum conditions are: reaction temperature 180 °C, reaction time 16 h and pH value 3.0. TiO2/GR was characterized on crystal structure, particle...
The capacity of current communication satellites is limited by nonlinearities in power amplifiers (PAs) used in satellite transponders. An look-up-table (LUT)-based predistorter is a low cost, efficient, and flexible method to compensate the nonlinearity in the PA. A technique is proposed in this paper to design the bin values of the LUT, which minimizes the intermodulation distortion (IMD) power...
Great variability is the most important character in the development of mobile value added service in 3G era. For effectively meet the exploding need of diversified mobile value added services, service variability control mechanism in framework is focused on in this paper. Based on the analysis of service requirement in 3G era, a component oriented service framework for mobile value added service...
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