Results 31 to 40 of about 25,149 (238)
IEEE Access, 2020 In this paper, we present a modified modulated wideband converter (MWC)-based digital receiver for fractional bandlimited signals, and further propose an intra-pulse modulation recognition method in discrete time fractional Fourier domain (DTFrFD) for ...
Xiaomin Li, Huali Wang, Haichao Luo
doaj +1 more source
Understanding Digital Radio Frequency Memory Performance in Countermeasure Design
Applied 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
Research on LFM signal parameter estimation method based on Gabor transform to improve MWC system
AIP 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
IEEE 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
Crystals, 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
IEEE 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
Improved algorithm based on modulated wideband converter for multiband signal reconstruction [PDF]
EURASIP Journal on Wireless Communications and Networking, 2016 For the compressed sensing of multiband signals, modulated wideband converter (MWC) is used as the sampling system, and the signal is reconstructed by the simultaneous orthogonal matching pursuit algorithm (SOMP) and its derivative algorithms. In order to find matching atoms, we need to obtain the inner product between atoms in sensing matrix and ...
Min Jia 0001 +4 more
openaire +1 more source
An improved MWC reconstruction algorithm based on wavelet neighbor threshold de-noising
Dianzi Jishu Yingyong, 2018 MWC implements the synchronous compression sampling of sparse wideband signal, however, there is still room for improvement in the anti-interference of the existing reconstruction algorithm. So this paper proposes an improved MWC reconstruction algorithm
Wen Wanying, Li Zhi
doaj +1 more source
A method for LFM signal parameter estimation based on MWC system and STFT-DPT
AIP Advances, 2023 A method of estimating linear frequency modulation (LFM) signal parameters using compressed sampling (CS) data of a Modulated Wideband Converter (MWC) system is proposed.
Shuo Meng, Chen Meng, Cheng Wang
doaj +1 more source
LPI Radar Waveform Recognition Based on Multi-Branch MWC Compressed Sampling Receiver
IEEE Access, 2018 In this paper, a new wideband digital receiver based on the modulated wideband converter compressed sampling (CS) system is proposed to replace a conventional wideband digital receiver, solve the cross-channel signal problem, and achieve intra-pulse ...
Tao Chen, Lizhi Liu, Xiangsong Huang
doaj +1 more source