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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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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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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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Oversampled receive array calibration
2015 23rd European Signal Processing Conference (EUSIPCO), 2015The problem of receive antenna array calibration in cases where the array is strongly spatially "over-sampled" is addressed in this paper. We suggest a new technique wherein spatially distributed strong clutter returns can be used for calibration with the goal of minimizing the power at the output of a number of antenna finger-beams steered into the ...
Yuri I. Abramovich, Geoffrey San Antonio
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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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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
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Increased information rate by oversampling
IEEE Transactions on Information Theory, 1993A noiseless ideal low-pass filter, followed by a limiter, is normally used as a binary data channel by sampling the output once per Nyquist interval. Detectors that sample more often encounter intersymbol interference, but can be used in ways that increase the information rate.
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Oversampled transforms for channels with erasures
Proceedings of the IEEE Information Theory Workshop, 2003Oversampled transforms are used to provide robustness against erasures. Oversampled DFT codes have already been studied for erasure channels Me IP networks. We propose oversampled DCT transforms called DCT codes for erasure channels. We show that DCT codes offer more flexibility in design as compared to DFT codes and for some cases, lesser average mean
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On optimum oversampling in the Gabor scheme
1997 IEEE International Conference on Acoustics, Speech, and Signal Processing, 2002The windowed Fourier transform of a time signal is considered, as well as a way to reconstruct the signal from a sufficiently densely sampled version of its windowed Fourier transform using a Gabor representation; following Gabor, sampling occurs on a two-dimensional time-frequency lattice with equidistant time intervals and equidistant frequency ...
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