Results 241 to 250 of about 93,524 (286)
Some of the next articles are maybe not open access.
Proceedings of the 2002 international symposium on Low power electronics and design - ISLPED '02, 2002
A dynamic gain-enhancement technique suitable for low-voltage low-power oversampling circuits, particularly sigma-delta converters, is presented. This method makes use of a discrete-time integrator to improve gradually the output resistance of the main amplifier over successive clocks.
openaire +1 more source
A dynamic gain-enhancement technique suitable for low-voltage low-power oversampling circuits, particularly sigma-delta converters, is presented. This method makes use of a discrete-time integrator to improve gradually the output resistance of the main amplifier over successive clocks.
openaire +1 more source
An oversampling-based DTMF generator
IEEE Transactions on Communications, 1991A circuit is described which uses one oversampling frequency synthesizer in an interleaved mode to generate dual-tone multifrequency (DTMF) telephone dialing tones. The synthesizer is based on direct digital synthesis using phase accumulation. The digital-to-analog conversion is carried out using a first-order sigma-delta converter.
P. O'Leary +3 more
openaire +2 more sources
Oversampling Expansion in Wavelet Subspaces
IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, 2011We find necessary and sufficient conditions for the (shifted) oversampling expansions to hold in wavelet subspaces. In particular, we characterize scaling functions with the (shifted) oversampling property. We also obtain L2 and L∞ norm estimates for the truncation and aliasing errors of the oversampling expansion.
Kwon, KH Kwon, Kil Hyun +1 more
openaire +1 more source
On the Oversampling of Affine Wavelet Frames
SIAM Journal on Mathematical Analysis, 2003Summary: The properties of oversampled affine frames are considered here with two main goals in mind. The first goal is to generalize the approach of \textit{C. K. Chui} and \textit{X. Shi} [Proc. Am. Math. Soc. 121, 511--517 (1994; Zbl 0802.41015), SIAM J. Math. Anal.
openaire +1 more source
Nokia PureView oversampling technology
SPIE Proceedings, 2013This paper describes Nokia’s PureView oversampling imaging technology as well as the product, Nokia 808 PureView, featuring it. The Nokia PureView imaging technology is the combination of a large, super high resolution 41Mpix with high performance Carl Zeiss optics.
Tero Vuori +3 more
openaire +1 more source
Oversampled blind MLSDE receiver
2000 IEEE International Conference on Communications. ICC 2000. Global Convergence Through Communications. Conference Record, 2002Oversampled blind maximum likelihood sequence detection and estimation (MLSDE) is proposed to improve the performance and robustness of the MLSDE receiver. The performance of the MLSDE receiver depends firmly on the assumed channel model and available knowledge about the channel parameters at the receiver.
Hossein Zamiri-Jafarian +1 more
openaire +1 more source
The Journal of the Acoustical Society of America, 1989
A kernel is developed that enables a bandlimited signal to be optimally reconstructed from a finite number N of samples taken at the Nyquist rate or faster. The point reconstruction error, which falls as only N−0.5 at the Nyquist frequency, drops exponentially with N if there is even moderate oversampling.
openaire +1 more source
A kernel is developed that enables a bandlimited signal to be optimally reconstructed from a finite number N of samples taken at the Nyquist rate or faster. The point reconstruction error, which falls as only N−0.5 at the Nyquist frequency, drops exponentially with N if there is even moderate oversampling.
openaire +1 more source
On the techniques of clock extraction and oversampling
HOT 9 Interconnects. Symposium on High Performance Interconnects, 2002Based on a probabilistic analysis, we compare and contrast the characteristics of two well known techniques for data recovery in communication links based on serial data streams: clock extraction and oversampling. The approach chosen is that of determining the probability of error in recognizing the transmitted symbols in the presence of additive noise
Henning Braunisch, Raj Nair
openaire +1 more source
Oversampled Sigma-Delta Modulation
IEEE Transactions on Communications, 1987Summary: Oversampled sigma-delta modulation has been proposed as a practical implementation for high rate analog-to-digital conversion because of its simplicity and its robustness against circuit imperfections. To date, mathematical developments of the basic properties of such systems have been based either on simplified continuous-time approximate ...
openaire +1 more source
On configurable oversampled A/D converters
IEEE Journal of Solid-State Circuits, 1993An oversampled A/D (analog-to-digital) converter that can be configured as either a sigma-delta converter or an incremental converter is presented. This is an oversampled instrumentation converter that cancels offset and 1/f noise. The converter architecture is based on a mixed analog-digital integrator (MADI) concept.
Olivier J. A. P. Nys, Evert Dijkstra
openaire +1 more source