Results 21 to 30 of about 7,177,543 (330)

High-Precision Adjustment of Welding Depth during Laser Micro Welding of Copper Using Superpositioned Spatial and Temporal Power Modulation

open access: yesJournal of Manufacturing and Materials Processing, 2021
For joining metallic materials for battery applications such as copper and stainless steel, laser beam micro welding with beam sources in the near-infrared range has become established in recent years.
Marc Hummel   +2 more
doaj   +1 more source

A Survey on Spatial Modulation in Emerging Wireless Systems: Research Progresses and Applications [PDF]

open access: yesIEEE Journal on Selected Areas in Communications, 2019
Spatial modulation (SM) is an innovative and promising digital modulation technology that strikes an appealing tradeoff between spectral efficiency and energy efficiency with a simple design philosophy.
Miao-Wen Wen   +6 more
semanticscholar   +1 more source

Spatial polarization modulators: distinguishing diffraction effects from spatial polarization modulation [PDF]

open access: yesPolarization Science and Remote Sensing X, 2021
13 pages, 10 figures, SPIE Proceedings 11833 ...
Mulder, W.   +4 more
openaire   +3 more sources

Spatial Terahertz Modulator [PDF]

open access: yesScientific Reports, 2013
Terahertz (THz) technology is a developing and promising candidate for biological imaging, security inspection and communications, due to the low photon energy, the high transparency and the broad band properties of the THz radiation1,2,3. However, a major encountered bottleneck is lack of efficient devices to manipulate the THz wave, especially to ...
Xie, Zhenwei   +6 more
openaire   +2 more sources

Generalised pre-coding aided spatial modulation [PDF]

open access: yes, 2013
A new Multiple Input Multiple Output (MIMO) transmission scheme termed as Generalised Pre-coding aided Spatial Modulation (GPSM) is proposed, where the key idea is that a particular subset of receive antennas is activated and the activation pattern ...
Yang, Lie-Liang   +2 more
core   +1 more source

Spatial modulation aided zero-padded single carrier transmission for dispersive channels [PDF]

open access: yes, 2013
In this paper, we consider spatial modulation (SM) operating in a frequency-selective single-carrier (SC) communication scenario and propose zero-padding instead of the cyclic-prefix considered in the existing literature.
Hari, K.V.S.   +4 more
core   +2 more sources

Multi-Set Space-Time Shift-Keying With Reduced Detection Complexity

open access: yesIEEE Access, 2016
In this paper, we propose a novel multi-set space-time shift keying (MS-STSK) technique, where the source bits are conveyed over two components, namely, by activating one out of MQ dispersion matrices of STSK and M antenna combination of the Nt available
Ibrahim A. Hemadeh   +3 more
doaj   +1 more source

Terahertz-Band Ultra-Massive Spatial Modulation MIMO [PDF]

open access: yesIEEE Journal on Selected Areas in Communications, 2019
The prospect of ultra-massive multiple-input multiple-output (UM-MIMO) technology to combat the distance problem at the Terahertz (THz) band is considered.
Hadi Sarieddeen   +2 more
semanticscholar   +1 more source

Intelligent Reflecting Surfaces With Spatial Modulation: An Electromagnetic Perspective [PDF]

open access: yesIEEE Open Journal of the Communications Society, 2020
Electromagnetic wave control using the concept of a reflecting surface is first studied as a near-field and a far-field problem. Using a secondary source present in a wireless communication environment, such as a backscatter tag, it is possible to ...
O. Yurduseven   +2 more
semanticscholar   +1 more source

Labeling Diversity for Media-Based Space-Time Block Coded Spatial Modulation

open access: yesIEEE Access, 2020
Media-based space-time block coded spatial modulation (MBSTBC-SM) combines the advantages of media-based modulation (MBM) and STBC-SM. Meanwhile, labelling diversity (LD) has been applied to STBC-SM and improve the error performance.
Babatunde S. Adejumobi   +1 more
doaj   +1 more source

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