نتایج جستجو برای: interleaved

تعداد نتایج: 8207  

2012
D. Kavitha

This paper presents a high-efficiency nonisolated interleaved dc–dc inductor boost converter with a common active clamp circuit. Interleaved boost converters are highly preferred as it reduces the ripple current. A boost converter is used to clamp the voltage stresses of all the switches in the interleaved converter which is caused by the leakage inductances. The leakage energies of the interle...

Journal: :Magnetic Resonance in Medicine 1999

2014
Hing-Chiu Chang Pooja Gaur Ying-hui Chou Mei-Lan Chu Nan-kuei Chen

Functional magnetic resonance imaging (fMRI) is a non-invasive and powerful imaging tool for detecting brain activities. The majority of fMRI studies are performed with single-shot echo-planar imaging (EPI) due to its high temporal resolution. Recent studies have demonstrated that, by increasing the spatial-resolution of fMRI, previously unidentified neuronal networks can be measured. However, ...

Journal: :European Journal of Combinatorics 2011

Journal: :Magnetic Resonance in Medicine 1999

2003
Jonas Elbornsson Fredrik Gustafsson Jan-Erik Eklund

Time interleaved A/D converters (ADCs) can be used to increase the sample rate of an ADC system. However, a problem with time interleaved ADCs is that distortion is introduced in the output signal due to various mismatch errors between the ADCs. One way to decrease the impact of the mismatch errors is to introduce additional ADCs in the interleaved structure and randomly select an ADC at each s...

2000
Mohammed Zafar Ali Khan B. Sundar Rajan

The diversity order is crucial for the performance of communication systems over Fading Channels. It has been shown by Zehavi that the diversity and hence performance of coded modulation over fading channels can be improved by bitwise interleaving at the encoder output, and by using an appropriate soft decision metric as an input t o the Viterbi decoder. A related approach is coordinate interle...

2005
Tobias Frank Anja Klein Elena Costa Egon Schulz

Multicarrier transmission systems with a specific subcarrier allocation such as equidistantly interleaved OFDMA or Interleaved Frequency Division Multiple Access (IFDMA) are promising candidates for future mobile radio systems, because they provide many advantages such as high flexibility, good performance and low computational complexity. In this paper, a new method for accommodation of differ...

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