Results 1 to 10 of about 304 (202)

Sub-Nyquist artefacts and sampling moiré effects [PDF]

Royal Society Open Science, 2015
Sampling moiré effects are well known in signal processing. They occur when a continuous periodic signal g(x) is sampled using a sampling frequency fs that does not respect the Nyquist condition, and the signal-frequency f folds over and gives a new ...
Isaac Amidror
exaly   +5 more sources

Sub-Nyquist sampling for short pulses with Gabor frames [PDF]

EURASIP Journal on Wireless Communications and Networking, 2017
For analog signals comprised of several, possibly overlapping, finite duration pulses with unknown shapes and time positions, an efficient sub-Nyquist sampling systems is based on Gabor frames.
Cheng Wang, Ying Wang, Peng Chen, Chen Meng, Xiangjun Song, Wanling Li   +5 more
doaj   +2 more sources

Joint DOA and frequency estimation with sub-Nyquist sampling [PDF]

Signal Processing, 2019
Abstract Inspired by the concept of sub-Nyquist sampling, in this paper, a receiver architecture of sensor arrays for jointly estimating the frequency and direction-of-arrival (DOA) of the narrowband far-field signals is presented. In particular, our contribution is threefold.
Jian-Feng Gu, Ping Wei, Liang Liu
exaly   +3 more sources

Wideband Spectrum Sensing With Sub-Nyquist Sampling in Cognitive Radios [PDF]

IEEE Transactions on Signal Processing, 2012
14 pages, 4 figures and 1 table.
Arumugam Nallanathan, , H Vincent Poor
exaly   +5 more sources

Wideband Spectrum Sensing Based on Single-Channel Sub-Nyquist Sampling for Cognitive Radio

Sensors, 2018
Spectrum sensing is an important task in cognitive radio. However, currently available Analog-to-Digital Converters (ADC) can hardly satisfy the sampling rate requirement for wideband signals. Even with such an ADC, the cost is extremely high in terms of
Houjun Wang, Changjian Liu, Wang Houjun   +2 more
exaly   +3 more sources

Sub-Nyquist Sampling OFDM Radar

IEEE Transactions on Radar Systems, 2023
In this paper, we propose a sub-Nyquist sampling (SNS) orthogonal frequency-division multiplexing (OFDM) radar system capable of reducing the analog-to-digital converter (ADC) sampling rate in OFDM radar without any additional manipulations of its hardware and waveform.
Kawon Han, Seonghyeon Kang, Songcheol Hong   +2 more
openaire   +2 more sources

Sub‐Nyquist receiver using sampling frequency and instant offsets

The Journal of Engineering, 2021
With rapid advance in analogue‐to‐digital converters, more analogue‐to‐digital converters in the market can cover multiple Nyquist zones. As a result, the implementation of a sub‐Nyquist receiver designed to cover a bandwidth wider than what is dictated ...
Chi‐Hao Cheng, Gregory Dye, Jason Pennington   +2 more
doaj   +1 more source

A Fractionally Asymmetric Sub–Nyquist Baseband Receiver Design and Implementation for Phase Modulated Signals

IEEE Access, 2022
Sub–Nyquist sampling is a technique which has various applications in signal processing and communication technologies. Memory relaxation, peripherals operating at relatively lower speeds, and consequently low–power consumption designs are ...
Gurkas-Aydin Zeynep, Serhan Yarkan
doaj   +1 more source

Sub-Nyquist sampling of short pulses [PDF]

2011 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2011
28 ...
Ewa Matusiak, Yonina C. Eldar
openaire   +6 more sources

Wideband spectrum sensing based on advanced sub-Nyquist sampling structure

EURASIP Journal on Advances in Signal Processing, 2022
As the bandwidth increases, the high-speed sampling rate becomes the bottleneck for the development of wideband spectrum sensing. Wideband spectrum sensing with sub-Nyquist sampling attracts more attention and modulated wideband converter (MWC) is an ...
Xue Wang, Qian Chen, Min Jia, Xuemai Gu
doaj   +1 more source