Results 21 to 30 of about 887,103 (337)

Real-Time Eye Diagram Monitoring for Optical Signals Based on Optical Sampling

open access: yesApplied Sciences, 2023
A real-time eye diagram monitoring method for optical signals is proposed and experimentally demonstrated based on optical sampling. In the system, the optical signals under test are directly sampled by an optical sampling pulse train with a narrow pulse
Tao Huang, Zhiqiang Fan, Jun Su, Qi Qiu
doaj   +1 more source

New Sampling Expansion Related to Derivatives in Quaternion Fourier Transform Domain

open access: yesMathematics, 2022
The theory of quaternions has gained a firm ground in recent times and is being widely explored, with the field of signal and image processing being no exception.
Siddiqui Saima   +2 more
doaj   +1 more source

Nonuniform sampling and reconstruction of Diracs signal associated with linear canonical transform and its application

open access: yesEURASIP Journal on Advances in Signal Processing, 2023
Sampling and reconstruction play a critical role in signal processing. The non-ideal sampling conditions motivate the development of the sampling theory. In this paper, associated with multiple non-ideal conditions, we discuss the nonuniform sampling and
Liyun Xu, Wei Li
doaj   +1 more source

Adaptive Processing With Signal Contaminated Training Samples

open access: yesIEEE Transactions on Signal Processing, 2013
We consider the adaptive beamforming or adaptive detection problem in the case of signal contaminated training samples, i.e., when the latter may contain a signal-like component. Since this results in a significant degradation of the signal to interference and noise ratio at the output of the adaptive filter, we investigate a scheme to jointly detect ...
Besson, Olivier, Bidon, Stéphanie
openaire   +3 more sources

Ranging Property of the Dual-Band Band Limited Signal (DBBLS)

open access: yesAdvances in Electrical and Computer Engineering, 2012
The Dual-Band Band Limited Signal (DBBLS) is a signal with its power spectral density consisting of two separate lobes. Signals that can be considered as DBBLS are for example signals with BOC, AltBOC modulation, signals modulated on two close carriers
KOVAR, P., KACMARIK, P.
doaj   +1 more source

THE DISCRETIZATION OF THE POLARIZED SIGNAL

open access: yesНаучный вестник МГТУ ГА, 2018
Often, the monitoring systems solution of remote sensing problems, recognition (classification, discrimination) of radar objects using radio polarimetry methods is required in real time mode with the display of the current information on the radar ...
P. E. Korneev
doaj   +1 more source

Influence of Analog-To-Digital Conversion and Decimation Parameters on the Signal-To-Noise Ratio in the Radar Path

open access: yesИзвестия высших учебных заведений России: Радиоэлектроника, 2021
Introduction. The digital representation of received radar signals has provided a wide range of opportunities for their processing. However, the used hardware and software impose some limits on the number of bits and sampling rate of the signal at all ...
S. R. Heister, V. V. Kirichenko
doaj   +1 more source

Demodulating BOC signals using compressive signal processing

open access: yesDianzi Jishu Yingyong, 2019
In order to lower the sampling frequency of binary offset carrier(BOC) signal, a BOC signal demodulation scheme based on compressive signal processing is proposed.
Song Peng, He Guodong
doaj   +1 more source

Sampling of graph signals via randomized local aggregations [PDF]

open access: yes, 2019
Sampling of signals defined over the nodes of a graph is one of the crucial problems in graph signal processing. While in classical signal processing sampling is a well defined operation, when we consider a graph signal many new challenges arise and ...
Fracastoro, Giulia   +2 more
core   +2 more sources

Design of Acoustic Signal for Positioning of Smart Devices

open access: yesSensors, 2023
This paper addresses the limitations of using smartphones in innovative localization systems based on audio signal processing, particularly in the frequency range of 18–22 kHz, due to the lack of technical specifications and noise characterization.
Veronika Hromadova   +2 more
doaj   +1 more source

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