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Oversampling and Whitening with the CASA Radar
2006 IEEE International Symposium on Geoscience and Remote Sensing, 2006The CASA NSF ERC is using cutting edge radar technology to create a network of short range weather radar to observe the lower regions of the atmosphere that are currently out of sight. Range oversampling and whitening is one of the newest technologies available for increasing the accuracy of weather radar moment estimates.
Erich Hefner, V. Chandrasekar 0001
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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.
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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.
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On filter banks with rational oversampling
2001 IEEE International Conference on Acoustics, Speech, and Signal Processing. Proceedings (Cat. No.01CH37221), 2002Despite the great popularity of critically-decimated filter banks, oversampled filter banks are useful in applications where data expansion is not a problem. We studied oversampled filter banks and showed that for some popular classes of filter banks it is not possible to obtain perfect reconstruction with rational (non-integer) oversampling ratios ...
Ricardo von Borries +2 more
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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
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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.
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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 ...
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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
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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
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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.
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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.
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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
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