Results 61 to 70 of about 519,749 (200)
This research proposes a Regularised Hyperparameter Bilevel Optimisation with Continual Learning‐based Deep Neural Network (RHBO‐CLDNN) for beamforming in an Ultra‐Wide Band (UWB) system. The RHBO ensures the hyperparameter efficiency at both upper and lower levels, which allows DNN to fine‐tune the unique characteristics of the UWB system, which leads
Pradeep Kumar Siddanna +2 more
wiley +1 more source
Compact Electromagnetic Bandgap Structures for Notch Band in Ultra-Wideband Applications
This paper introduces a novel approach to create notch band filters in the front-end of ultra-wideband (UWB) communication systems based on electromagnetic bandgap (EBG) structures.
Jan Sykulski +3 more
core +1 more source
Artificial Noise Aided Directional Modulation with Multilog Frequency Diverse Array
The basic principle of the proposed AN‐DM‐MFDA system is to allocate AN to leakage sidelobes instead of uniformly transmitting on the two‐dimensional plane. Moreover, we theoretically derive the average bit error rates as well as the secrecy capacity between the legitimate receiver and eavesdropper in the developed system.
Ji Liu, Yue Xiao, Yong Wang, Xia Lei
wiley +1 more source
Planar UWB Antenna with Notched Bands
The ultra-wideband (UWB) monopole antennas are designed to provide the impedance band-width of the wideband response from 2.5 to 12 GHz. To achieve single-, dual-, or triple-band notched characteristics at desirable frequencies, the electric ring ...
A. S. Rusakov
doaj
This paper proposes sparse direct demodulation (SDD), a method that replaces both OMP‐based channel estimation and the Rake receiver in an IR‐UWB coherent reception by operating directly on a small set of M$M$ Fourier coefficients extracted at sub‐Nyquist rates via the MCMW scheme.
Tina Yaacoub +3 more
wiley +1 more source
A digital twin‐driven emergency evacuation framework for underground coal mines is proposed by integrating UWB‐based real‐time personnel positioning with multi‐parameter environmental monitoring. The system synchronises methane concentration, carbon monoxide, temperature and airflow data into a dynamic virtual mine environment for continuous hazard ...
Chen Ling
wiley +1 more source
Metamaterial-Inspired Stub-Loaded EBG Structures for Broadband PDN Noise Mitigation in High-Speed PCBs [PDF]
Ultra-wideband (UWB) high-speed planar circuits suffer from power/ground noise due to voltage fluctuations, ground bounce, return-path discontinuities, and plane resonances, leading to electromagnetic interference (EMI) and signal integrity (SI ...
Aishwaryaa L. K. +3 more
doaj +1 more source
A Compact WiMAX Band-Notched UWB MIMO Antenna with High Isolation [PDF]
A multiple-input-multiple-output (MIMO) antenna is proposed for ultra-wideband (UWB) applications with high isolation capability. The proposed MIMO structure consists of two simple square monopole antennas with slotted ground plane structure with S11 ...
B. Azarm +4 more
doaj
High data rate transmissions in UWB system using orthogonal pulses
Two orthogonal pulses based on wavelet were presented,their spectrum meet FCC spectral mask for ultra wideband (UWB) system.A novel method for high data rate transmissions in UWB system was proposed.It employs a combination of pulse polarity and ...
LIANG Zhao-hui1 +2 more
doaj +2 more sources
Vision Transformers (ViT) for Blanket-Penetrating Sleep Posture Recognition Using a Triple Ultra-Wideband (UWB) Radar System. [PDF]
Lai DK +9 more
europepmc +1 more source

