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Mobile Data Offloading (MDO) has been recently proposed as a practical response to the ever increasing demand of data communications through cellular networks. MDO directs part of the data traffic through a secondary network to reduce the cellular data traffic load. In this paper, two offloading methods are proposed which utilize link delay and Signal-to-Noise Ratio (SNR) as decision criteria to determine...
Resonant dc-dc converters have been applied to many industrial applications. In order to dc-dc converter operates in fixed frequency and the zero-voltage-switching (ZVS) condition per different loads, using robust control theory has been reported. In this paper, an optimal sliding mode controller for dc-dc series resonant converter is proposed to control the output voltage of converter in presence...
A secure self-biased remote controller for precisely adjusting the micropump of a drug delivery system, working at 956 MHz, is proposed. The controller transceiver is secured by using a Barker code sequence. Surface acoustic wave device, as a bandpass filter, is designed with minimum insertion loss and a sharp bandwidth matching the single frequency of operation. In the receiver, a correlation is...
A MEMS based capacitive sensor for high sensitivity micro-force measurement is proposed and discussed. A 3D-model is considered for only one equivalent capacitance, which resulted outputs can be extracted to the entire device, when multiplied by the number of the combs. The effects of various semiconductors as the base material are studied and the output results are compared. The ratio of the calculated...
Due to voltage limitation of available semiconductor switches, multicell converters are required for high-power medium-voltage applications. One of the most significant types of multicell converters is cascade multicell converter categorized into symmetrical and asymmetrical ones. This paper first presents a new symmetrical cascade multicell converter in which the number of switches is optimized....
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