Results 61 to 70 of about 11,967 (225)
Smart-RF for mmWave MIMO Beamforming [PDF]
2018 IEEE 29th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC), 2018 We study the performance of a prototype of a millimeter-wave transceiver with radio frequency (RF) beamforming capabilities. More specifically, the focus is on the architecture and software implementation of a smart-RF that allows self-beam-alignment. Simulation studies shows the expected performance in terms of probability of misalignment and coverage
Praneeth Susarla +6 more
openaire +2 more sources
Swarm Intelligence Optimization of Multi-RIS Aided MmWave Beamspace MIMO [PDF]
peer reviewedWe investigate the performance of a multiple re-configurable intelligence surface (RIS)-aided millimeter wave (mmWave) beamspace multiple-input multiple-output (MIMO) system with multiple users (UEs).
CAMANA ACOSTA, Mario Rodrigo +5 more
core +1 more source
ST-PCT: Spatial-Temporal Point Cloud Transformer for Sensing Activity Based on mmWave [PDF]
, 2023 The millimeter-wave (mmWave) spectrum has become a core of wireless communication, which has the advantages of richer spectrum resources, larger communication bandwidth and smaller spectrum interference.
Li, Zan +4 more
core +1 more source
An Eight-Element Slotted SIW Array Engineered to Generate Four Orbital Angular Momentum (OAM) Modes
IEEE AccessThis paper presents a circular substrate-integrated waveguide (SIW) cavity array divided equally into eight wedges for generating orbital angular momentum (OAM) modes $\ell =\pm 1$ and $\ell =\pm 2$ at an operating frequency of 5.8 GHz.
P. Rahul Lal +3 more
doaj +1 more source
Advanced Intelligent Systems, EarlyView.The phase discontinuity problem—where the cyclic nature of phase angles causes catastrophic errors near the ±π boundary—is a fundamental obstacle in learning‐based reconfigurable intelligent surface (RIS) optimization. A phase‐aware hybrid CNN–LSTM framework resolves this by decomposing phase predictions into sine–cosine components, mapping circular ...
Seda Savaşçı Şen +3 more
wiley +1 more source
3D mmWave Channel Model Proposal [PDF]
, 2014 There is growing interest in using millimeter wave (mmWave) frequencies for future access communications based on the enormous amount of available spectrum.
Thomas, Timothy +7 more
core +1 more source
InfoScience, EarlyView.With the advancement of 6G communications, high‐precision radar, and advanced imaging technologies, there is a growing demand for compact, high‐performance light sources capable of generating high‐frequency radio waves (millimeter‐wave and terahertz waves). This article systematically introduces how to efficiently generate these high‐frequency waves on
Jianfeng Xiong +8 more
wiley +1 more source
Millimeter Wave Vehicular Channel Emulation: A Framework for Balancing Complexity and Accuracy
Sensors, 2018 We propose a general framework for the specification of a sparse representation of millimeter wave vehicular propagation channels and apply this to both synthetic data and real-world observations from channel sounding experiments.
Thomas Blazek +2 more
doaj +1 more source
Wideband Endfire Antenna Array for 5G mmWave Mobile Terminals [PDF]
In this paper, a compact endfire antenna array with low-profile, small clearance, and wideband operation is proposed for millimeter-wave (mmWave) fifth-generation (5G) mobile terminals. The wideband operation is achieved by exciting two identical bow-tie
Ma, Yue +10 more
core +2 more sources
Toward Highest Frequency, Phase‐Sensitive Electric Field Sensing Enabled by Plasmonic Circuits
Laser &Photonics Reviews, EarlyView.An electromagnetic field sensor using an optical sensor head for distortion‐free, high‐sensitivity measurements with potential for high‐frequency operation is presented. The frequency response is enabled by an antenna‐integrated plasmonic modulator. The sensitivity is calculated, and optimizations to obtain thermal‐background‐limited sensitivity are ...
Michael Baumann +5 more
wiley +1 more source