Results 71 to 80 of about 122,418 (183)

Space-Time Phononic Crystals with Anomalous Topological Edge States

, 2019
It is well known that an interface created by two topologically distinct structures could host nontrivial edge states that are immune to defects.
Deng, Yuanchen, Jing, Yun, Oudich, Mourad, Tao, Molei   +3 more
core   +1 more source

Spectral-Efficient Generalized Spatial Modulation Based Hybrid Dimming Scheme With LACO-OFDM in VLC

IEEE Access, 2018
Visible light communication (VLC) is regarded as one of the promising candidates to complement the conventional radio frequency communication as it can potentially perform communication and illumination simultaneously.
Tengjiao Wang, Fang Yang, Ling Cheng, Jian Song   +3 more
doaj   +1 more source

Reconfigurable all-diffractive optical filters using phase-only spatial light modulators

, 2010
We demonstrate a reconfigurable optical filter implemented using a phase-only two-dimensional liquid crystal on silicon spatial light modulator. To achieve this we utilize two different approaches leading to two different configurations in the modulator.
Mendoza-Yero, Omel, Minguez-Vega, Gladys, Supradeepa, V. R., Weiner, Andrew M.   +3 more
core   +1 more source

Reconstruction of Computer Generated Holograms by Spatial Light Modulators [PDF]

, 2006
Computer generated holograms generated by using three different numerical techniques are reconstructed optically by spatial light modulators. Liquid crystal spatial light modulators (SLM) on transmission and on reflection modes with different resolutions were investigated.
Kovachev, Metodi, İlieva, Rossitza, Onural, Levent, Esmer, Gökhan Bora, Reyhan, Tarık, Benzie, P., Watson, J., Mitev, E.   +7 more
openaire   +2 more sources

A STUDY ON LOW-COMPLEXITY TRANSMIT ANTENNA SELECTION FOR GENERALIZED SPATIAL MODULATION

International Islamic University Malaysia Engineering Journal, 2018
: Generalized spatial modulation (GSM) maps its information to the index of the transmit antenna combination, making simultaneous transmission of multiple symbol possible.
Adewale Alafia, Simeon Olumide Ajose, Agbotiname Lucky Imoize   +2 more
doaj   +1 more source

Hierarchical Multi-Functional Layered Spatial Modulation

IEEE Access, 2018
In pursuit of optimal index modulation -aided multiple-input multiple-output (MIMO) systems, where information is implicitly conveyed by relying on the on/off mechanism of the system's components in addition to the classical amplitude, phase, or ...
Ibrahim A. Hemadeh, Mohammed El-Hajjar, Lajos Hanzo   +2 more
doaj   +1 more source

New construction of enhanced cross Z-complementary set for generalized spatial modulation

Tongxin xuebao
In order to expand the existence space of enhanced cross Z-complementary set (E-CZCS), based on the extended generalized Boolean function (EGBF), the direct construction method of enhanced cross Z-complementary sets was proposed.
PENG Xiuping, LIU Yinna, WANG Yu, NIU Xiaoxia   +3 more
doaj  

Complex Quadrature Spatial Modulation

ETRI Journal, 2017
In this paper, we propose a spatial modulation (SM) scheme referred to as complex quadrature SM (CQSM). In contrast to quadrature SM (QSM), CQSM transmits two complex signal constellation symbols on the real and quadrature spatial dimensions at each ...
Manar Mohaisen, Saetbyeol Lee
doaj   +1 more source

RIS-Aided Receive Generalized Spatial Modulation Design with Reflecting Modulation

GLOBECOM 2024 - 2024 IEEE Global Communications Conference
Spatial modulation (SM) transmits additional information bits by the selection of antennas. Generalized spatial modulation (GSM), as an advanced type of SM, can be divided into diversity and multiplexing (MUX) schemes according to the symbols carried on the selected antennas are identical or different. Recently, reconfigurable intelligent surface (RIS)
Guo, Xinghao, Xu, Yin, Hong, Hanjiang, Mi, De, Liu, Ruiqi, He, Dazhi, Zhang, Wenjun, Wu, Yi-yan   +7 more
openaire   +2 more sources

Mode-cleaning in antisymmetrically modulated non-Hermitian waveguides

Nanophotonics
We demonstrate all-optical spatial mode-cleaning in non-Hermitian waveguides. The effect is accounted by a unidirectional coupling among the modes resulting from a simultaneous modulation of the refractive index and the gain/loss along graded index ...
Akhter Mohammad Nayeem, Botey Muriel, Herrero Ramon, Staliunas Kestutis   +3 more
doaj   +1 more source