Vahideh Sadat Sadeghi

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While the primary healthcare (PHC) services in Iran were appropriate to the needs of the population in the late 1970s and 1980s, the changing burden of disease and shifting demand patterns have rendered the existing PHC system no longer suitable for meeting current and emergent needs. This has serious implications for the PHC system in Iran, which has(More)
Frequency synthesizer is one of the most challenging blocks in wireless transceivers which works as a local oscillator in both receiver and transmitter blocks. It is generally based on charge pump based phase-locked loops structure. This paper describes the new application of fast charge pump based PLL architecture. The PLL uses a bang-bang frequency(More)
BACKGROUND According to World Bank Group report, while Primary Health Care (PHC) services in Iran were appropriate to the needs of the population in the late 1970s and 1980s, the changing burden of diseases and shifting demand patterns have rendered the existing PHC system no longer suitable to meet current and emergent needs. Based on previous studies, one(More)
Abstract. Speeding up a synthesizer’s locking process can be considered as speeding up the charge pump PLL. Several methods have been introduced to increase the speed of the locking process. One way to achieve fast locking is to use a bangbang frequency comparator (BBFC) in the feed-trough path to achieve a faster locking process. In this paper, we present(More)
Speech recognition techniques have been developed dramatically in recent years. Nevertheless, errors caused by environmental noise are still a serious problem in recognition. Employing algorithms to detect and follow the motion of lips have been widely used to improve the performance of speech recognition algorithms. This paper presents a novel technique to(More)
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