Proceedings ArticleDOI
Non uniform digitizer for alias-free sampling of wideband analog signals
Navin Michael,S. Shah,J. Das,M.M. Sandeep,C. Vijaykumar +4 more
- pp 1-4
Reads0
Chats0
TLDR
There is no upper limit on the alias-free bandwidth and the entire analog bandwidth of the digitizer front end can be used for alias- free sampling of a wideband analog waveform.Abstract:
The alias-free nature of non uniform sampling schemes can be used to design wideband digitizers. Existing non uniform digitizer designs have a finite alias-free bandwidth because of time quantization of sampling instants. This paper proposes a new design for a non uniform digitizer in which the sampling instants are no longer time quantized. Hence, there is no upper limit on the alias-free bandwidth and the entire analog bandwidth of the digitizer front end can be used for alias-free sampling of a wideband analog waveform.read more
Citations
More filters
Journal ArticleDOI
Pseudorandom signal sampler for relaxed design of multistandard radio receiver
TL;DR: Mixed experimental/simulation tests, of designed NUS-based SDR receiver, revealed a confirmation of alias-free performances and the achievement of a 72dB (12-bit ADC) dynamic range after signal reconstruction.
Journal ArticleDOI
Sub-Nyquist SAR via Quadrature Compressive Sampling with Independent Measurements
TL;DR: Simulation results suggest that the proposed sampling system is a valid candidate for sub-Nyquist SAR, and the resulting sensing matrix has structures suitable for fast matrix-vector products, based on which the proposed system provides a first-order fast image formation algorithm.
Proceedings ArticleDOI
Low power data conversion based on Non-Uniform Sampling for multistandard receiver
TL;DR: This work focuses on adapting NUS in a multistandard receiver to relax the AAF constraints, and proposes a pseudorandom signal sampler to control the Analog-to-Digital Converter (ADC).
Proceedings ArticleDOI
Software embedded implementation of real time non uniform sampling filter
TL;DR: Real time filtering of non uniformly sampled signals using a Blackfin 533 Digital Signal Processor (DSP) as embedded software target using specific spectrum analysis method based on zero padding and Fast Fourier Transform.
Journal ArticleDOI
Pseudorandom Direct Sampler for Non-Uniform Sub-sampling Architecture in a Multistandard Receiver
TL;DR: A Non-Uniform Sampling (NUS) technique for down-conversion stage in a multistandard radio receiver is proposed, which promises relaxing system design constraints, decreasing the sampling frequency as well as reducing power consumption.
References
More filters
Book
Communication systems: an introduction to signals and noise in electrical communication
TL;DR: Information and Detection Theory Appendix: Circuit and System Noise.
Patent
Thermal noise random pulse generator and random number generator
TL;DR: In this paper, a thermal noise random number generator was proposed to generate the true physical random numbers at a required generation speed using a simple configuration using inexpensive electronic parts and can provide the real physical random number to any sectors of society at dramatically low cost.
Journal ArticleDOI
A high-speed wide dynamic range time-to-digital converter
M. Lampton,R. Raffanti +1 more
TL;DR: A time‐to‐digital converter able to measure intervals as great as 100 ns with a resolution of 4 ps rms is described, achieving this large dynamic range by simultaneously sampling four sinusoidal wave forms derived from a single quartz oscillator.
Patent
Method and apparatus for alias suppressed digitizing of high frequency analog signals
Artjuhs Juris,Ivars Bilinskis +1 more
TL;DR: In this article, a method and apparatus for alias suppressed digitizing of high frequency analog signals, comprising sampling of the analog signals at mean frequencies considerably lower than the upper frequencies in spectra of said signals, is disclosed.