Results 21 to 30 of about 3,508 (187)

PERFORMANCE EVALUATION OF FILTER BANK MULTI-CARRIER MODULATION IN MULTIPATH FADING CHANNELS

Iraqi Journal of Information & Communication Technology, 2021
Filter Bank Multi-Carrier (FBMC) modulation is one of the most significant enablers for future 5G technologies. It is a modulation technique for resolving inter-carrier and inter-symbol interference using two possible methods: Frequency Spreading (FS ...
Ali A. Abdulhussein , Hikmat N. Abdullah
doaj   +1 more source

Channel-SLAM: multipath assisted positioning [PDF]

, 2018
In wireless propagation transmitted signals are reflected, scattered and diffracted by objects. Especially in urban canyons or inside buildings, the signal reaching the receiving antenna consists of multiple replicas of the transmitted signal, which are called multipath components.
openaire   +2 more sources

Sequential Estimation of Multipath MIMO-OFDM Channels [PDF]

IEEE Transactions on Signal Processing, 2009
The work of E. Biglieri was supported by the Spanish Ministery of Education and Science under Project TEC2006-01428/TCM, and by the STREP project No. IST-026905 (MASCOT) within the 6th framework program of the European Commission.
Angelosante, Daniele, Biglieri, Ezio, Lops, Marco   +2 more
openaire   +3 more sources

Ultrafast Optoacoustics Reveals Intricate 3D Anisotropic Elasticity in Nanocrystalline Membranes

Advanced Science, EarlyView.
Ultrafast optoacoustic spectroscopy combined with a Sagnac interferometer enables non‐contact, simultaneous characterization of thickness and the full three‐dimensional anisotropic elastic constants in freestanding nanocrystalline copper membranes. By capturing gigahertz Lamb waves and zero‐group‐velocity resonances followed by SAFE‐GA inversion, the ...
Shuchang Zhang, Yi He, Guojie Luo, Jie Huang, Pak San Yip, Haoyu Cui, Wanglinhan Zhang, Zijian Wang, Lin Ye, Yang Lu, Zhongqing Su, Yehai Li   +11 more
wiley   +1 more source

Hierarchical Modulation Classification with Channel-Type-Guided Blind Preprocessing for High-Order QAM in Multipath Fading Channels

Applied Sciences
Automatic modulation classification (AMC) becomes challenging in multipath fading channels, particularly for high-order quadrature amplitude modulation (QAM) signals whose constellation points are strongly distorted by inter-symbol interference, phase ...
Sungsoo Park, Gyuyeol Kong
doaj   +1 more source

Throughput Performance Comparison of MPT-GRE and MPTCP in the Fast Ethernet IPv4/IPv6 Environment

Journal of Telecommunications and Information Technology, 2018
This paper presents the MPT-GRE software, a novel multipath communication technology founded on the Generic Routing Encapsulation (GRE) protocol in UDP tunneling RFC specification.
Szabolcs Szilagyi, Ferenc Fejes, Róbert Katona   +2 more
doaj   +1 more source

Single‐Sensor Vibration Sensing in Anisotropic Composites Enabled by Disordered Metasurfaces

Advanced Science, EarlyView.
This work develops a single‐sensor vibration sensing (SSVS) framework that integrates disordered metasurfaces with compressive sensing. Comprehensive numerical and experimental validations demonstrate that, by manipulating anisotropic guided wave propagation through metasurfaces, the proposed SSVS framework enables high‐fidelity multi‐source vibration ...
Jianjie Zhang, Lanhe Xu, Zhongzheng Zhang, Yongbo Li, Eric Li, Asoke K. Nandi, Bing Li   +6 more
wiley   +1 more source

Liquid Metals in Radio Frequency Applications: A Review of Physics, Manufacturing, and Emerging Technologies

Advanced Electronic Materials, EarlyView.
This paper reviews the physics of liquid metals in RF devices, including the influence of mechanical strain on resonance as well as fabrication methods and strategies for designing tunable and strain‐tolerant inductors, capacitors, and antennas.
Md Saifur Rahman, William J. Scheideler
wiley   +1 more source

Modulation Recognition Method for Underwater Acoustic Communication Signals Based on Passive Time Reversal-Autoencoder with the Synchronous Signals

Sensors, 2023
In the process of the modulation recognition of underwater acoustic communication signals, the multipath effect seriously interferes with the signal characteristics, reducing modulation recognition accuracy.
Yalin Hu, Jixin Bao, Wanzhong Sun, Xiaomei Fu   +3 more
doaj   +1 more source

Conformal Reconfigurable Intelligent Surfaces: A Cylindrical Geometry Perspective

Advanced Electronic Materials, EarlyView.
Cylindrical reconfigurable intelligent surfaces are explored for low‐complexity beam steering using one‐bit meta‐atoms. A multi‐level modeling approach, including optimization‐based synthesis, demonstrates that even minimal hardware can support directive scattering.
Filippo Pepe, Ivan Iudice, Giuseppe Castaldi, Marco Di Renzo, Vincenzo Galdi   +4 more
wiley   +1 more source