Results 11 to 20 of about 545,717 (377)
MILLIMETER-MILLIMETER-WAVE DOUBLE-MODULATION DOUBLE-RESONANCE SPECTROSCOPY [PDF]
Proceedings of the 2021 International Symposium on Molecular Spectroscopy, 2021 A new millimeter- to millimeter-wave double-modulation double-resonance (MMW-MMW DM-DR) scheme has been applied to record spectra of two astronomically relevant complex organic molecules (COMs), propanal (C2H5CHO) and ethyl cyanide (C2H5CN), to demonstrate advantages of the DM-DR experimental technique.
Oliver Zingsheim +5 more
openaire +2 more sources
A Survey on Millimeter-Wave Beamforming Enabled UAV Communications and Networking [PDF]
IEEE Communications Surveys and Tutorials, 2021 Unmanned aerial vehicles (UAVs) have found widespread commercial, civilian, and military applications. Wireless communication has always been one of the core technologies for UAV.
Zhenyu Xiao +6 more
semanticscholar +1 more source
Instrumentation for THz Spectroscopy in the Laboratory and in Space
IEEE Journal of Microwaves, 2021 Spectroscopic measurements in the millimeter, submillimeter, or THz range, with resolutions exceeding a MHz, provide for highly specific detections of gas-phase absorption and emission by atoms and molecules.
John C. Pearson +2 more
doaj +1 more source
Jurnal Elkomika, 2023 ABSTRAK Jaringan seluler terkini membutuhkan kapasitas tinggi dan latensi rendah di fronthaul yang dapat didukung oleh radio over fiber (RoF) dengan gelombang milimeter.
CATUR APRIONO +2 more
doaj +1 more source
Spatially Sparse Precoding in Millimeter Wave MIMO Systems [PDF]
IEEE Transactions on Wireless Communications, 2013 Millimeter wave (mmWave) signals experience orders-of-magnitude more pathloss than the microwave signals currently used in most wireless applications and all cellular systems.
Omar El Ayach +4 more
semanticscholar +1 more source
Channel Estimation for RIS-Aided Multiuser Millimeter-Wave Systems [PDF]
IEEE Transactions on Signal Processing, 2021 Reconfigurable intelligent surface (RIS) is a promising device that can reconfigure the electromagnetic propagation environment through adjustment of the phase shifts of its reflecting elements. However, channel estimation in RIS-aided multiuser multiple-
Gui Zhou +4 more
semanticscholar +1 more source
Channel Estimation and Hybrid Precoding for Millimeter Wave Cellular Systems [PDF]
IEEE Journal on Selected Topics in Signal Processing, 2014 Millimeter wave (mmWave) cellular systems will enable gigabit-per-second data rates thanks to the large bandwidth available at mmWave frequencies. To realize sufficient link margin, mmWave systems will employ directional beamforming with large antenna ...
A. Alkhateeb +3 more
semanticscholar +1 more source
An Overview of Signal Processing Techniques for Millimeter Wave MIMO Systems [PDF]
IEEE Journal on Selected Topics in Signal Processing, 2015 Communication at millimeter wave (mmWave) frequencies is defining a new era of wireless communication. The mmWave band offers higher bandwidth communication channels versus those presently used in commercial wireless systems.
R. Heath +4 more
semanticscholar +1 more source
Constrain the SED Type of Unidentified Fermi Objects [PDF]
Journal of Astronomy and Space Sciences, 2013 2FGL J1823.8+4312 and 2FGL J1304.1-2415 are two unidentified Fermi objects which are associated with cluster of galaxies. In order to exam the possibility of cluster of galaxies as gamma-ray emitters, we search for counterpart of these two unidentified
An-Li Tsai +3 more
doaj +1 more source
The Role of Millimeter-Wave Technologies in 5G/6G Wireless Communications
IEEE Journal of Microwaves, 2021 Ever since the deployment of the first-generation of mobile telecommunications, wireless communication technology has evolved at a dramatically fast pace over the past four decades. The upcoming fifth-generation (5G) holds a great promise in providing an
W. Hong +19 more
semanticscholar +1 more source