Results 21 to 30 of about 8,642 (263)

Code properties analysis for the implementation of a modulated wideband converter [PDF]

open access: yes2017 25th European Signal Processing Conference (EUSIPCO), 2017
Publication in the conference proceedings of EUSIPCO, Kos island, Greece ...
Marnat, Marguerite   +3 more
openaire   +2 more sources

Understanding Digital Radio Frequency Memory Performance in Countermeasure Design

open access: yesApplied Sciences, 2020
This paper describes the design, implementation, and testing of a novel multi-function software defined Radio Frequency (RF) system designed for small airborne drone applications. The system was created using an inexpensive Field Programmable Gate Array (
Kyle Davidson, Joey Bray
doaj   +1 more source

Performances of multitones for ultra-wideband software-defined radar [PDF]

open access: yes, 2017
From the literature review, it is apparent that there is a gap in quantifying the performances of multitone waveforms specifically for radar applications and experimental results are not commonly found.
Le Kernec, Julien, Romain, Olivier
core   +2 more sources

Sub-Nyquist Spectrum Sensing Based on Modulated Wideband Converter in Cognitive Radio Sensor Networks

open access: yesIEEE Access, 2018
The large-scale deployment of wireless sensor networks is indispensable to the success of Internet of Things. Considering dynamic spectrum access and the limited spectrum resources in cognitive radio sensor networks, sub-Nyquist spectrum sensing based on
Xue Wang, Min Jia, Xuemai Gu, Qing Guo
doaj   +1 more source

Research on LFM signal parameter estimation method based on Gabor transform to improve MWC system

open access: yesAIP Advances, 2023
The “compressed sensing” theory is the foundation for the compressed sampling system’s design. In addition to the sparse representation and observation matrix, more studies in compressed sensing theory focus on signal reconstruction and recovery.
Shuo Meng, Chen Meng, Cheng Wang
doaj   +1 more source

A 0.2~3.8-GHz Full-Duplex Receiver With More Than 25 dB Self-Interference Cancellation Using a C-DAC-Based Vector Canceller

open access: yesIEEE Access, 2021
This paper presents a $0.2\sim 3.8$ -GHz in-band (IB) full-duplex (FD) mixer-first receiver based on a vector self-interference (SI) canceller. To ensure the wideband orthogonality of the reconstructed SI signal while minimizing the noise figure (NF ...
Chuangguo Wang, Wei Li, Hongtao Xu
doaj   +1 more source

Near-field direct antenna modulation [PDF]

open access: yes, 2009
NFDAM systems provide a unique solution for transmitting highly secured direction-dependent data and hence preventing eavesdroppers from properly demodulating the signal.
Babakhani, Aydin   +2 more
core   +2 more sources

Broadband Spectrum Sensing of Distributed Modulated Wideband Converter Based on Markov Random Field

open access: yesETRI Journal, 2018
The Distributed Modulated Wideband Converter (DMWC) is a networking system developed from the Modulated Wideband Converter, which converts all sampling channels into sensing nodes with number variables to implement signal undersampling.
Zhi Li, Jiawei Zhu, Ziyong Xu, Wei Hua
doaj   +1 more source

Ultra-Wide-Bandwidth Tunable Magnetic Fluid-Filled Hybrid Connected Dual-Core Photonic Crystal Fiber Mode Converter

open access: yesCrystals, 2018
We propose a tunable magnetic fluid-filled hybrid photonic crystal fiber mode converter. Innovative design principles based on the hybrid connected dual-core photonic crystal fiber and magnetically modulated optical properties of magnetic fluid are ...
Yingying Yu, Bo Sun
doaj   +1 more source

Sparse Multiband Signal Acquisition Receiver With Co-Prime Sampling

open access: yesIEEE Access, 2018
Cognitive radio (CR) requires spectrum sensing over a broad frequency band. One of the crucial tasks in CR is to sample wideband signal at high sampling rate.
Yijiu Zhao, Shuangman Xiao
doaj   +1 more source

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