Results 81 to 90 of about 28,039 (290)

Generalized Space Time Block Coded Spatial Modulation Systems

, 2019
In this paper, Generalized Space-Time Block Coded Spatial Modulation (GSTBC-SM) is proposed for Multiple-Input and Multiple-Output (MIMO) system, which can be extended into an arbitrary even number of Transmit Antennas (TAs). The proposed GSTBC-SM scheme
Xu, Chao, Hemadeh, Ibrahim A., Lixia Xiao, Mi, De, Hao, Wanming, Pei Xiao, Ibrahim A. Hemadeh, De Mi, Xiao, Lixia, Chao Xu, Xiao, Pei, Wanming Hao   +11 more
core   +3 more sources

Generation of axially modulated plasma waveguides using a spatial light modulator

Optics Letters, 2016
We demonstrate the generation of axially modulated plasma waveguides using spatially patterned high-energy laser pulses. A spatial light modulator (SLM) imposes transverse phase front modulations on a low-energy (10 mJ) laser pulse which is interferometrically combined with a high-energy (130-450 mJ) pulse, sculpting its intensity profile. This enables
G A, Hine, A J, Goers, L, Feder, J A, Elle, S J, Yoon, H M, Milchberg   +5 more
openaire   +2 more sources

Gravity‐Dependent Modulation of Downbeat Nystagmus: Insights From Velocity‐Storage Dysfunction

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Downbeat nystagmus varies with head position, a phenomenon termed gravity‐dependent modulation. We aimed to clarify its mechanism using a velocity‐storage model. Methods In 10 patients with downbeat nystagmus due to cerebellar disorders, we recorded eye movements at different pitch‐ and roll‐axis head positions.
Ji‐Hyung Park, Eun‐Hyuk Choi, Jorge Otero‐Millan, David S. Zee, Jeong‐Yoon Choi, Ji‐Soo Kim   +5 more
wiley   +1 more source

Signal constellations based on Eisenstein integers for generalized spatial modulation

, 2016
This letter introduces signal constellations based on multiplicative groups of Eisenstein integers, i.e., hexagonal lattices. These sets of Eisenstein integers are proposed as signal constellations for generalized spatial modulation.
Freudenberger, Jürgen, Shavgulidze, Sergo   +1 more
core   +1 more source

OFDM-Based Generalized Spatial Modulation for Optical Wireless Communication

, 2021
In this paper, we propose two orthogonal frequency division multiplexing (OFDM)-based generalized spatial modulation (GSM) techniques, i.e., frequency domain GSM (FD-GSM) and time domain GSM (TD-GSM), for indoor multiple-input multiple-output optical ...
Chen Chen, Min Liu, Zhong, Xin, Chen, Chen, Xiong Deng, Xin Zhong, Deng, Xiong, Fu, Shu, Liu, Min, Jian, Xin, Shu Fu, Xin Jian   +11 more
core   +1 more source

Zero forcing based sphere decoder for generalized spatial modulation systems

ETRI Journal, 2019
To reduce the number of radio frequency (RF) chains in multiple input multiple output (MIMO) systems, generalized spatial modulation (GSM) techniques have been proposed in the literature.
Sara Jafarpoor, Majid Fouladian, Mohammad Neinavaie   +2 more
doaj   +1 more source

Symbolic Regression and Multi‐Objective Optimization of the Flory–Huggins Interaction Parameter for Hydrogels

Advanced Engineering Materials, EarlyView.
We develop a data‐driven method to derive the mathematical expressions of the Flory–Huggins interaction parameter χ for the swelling behavior of temperature–responsive hydrogels. Starting from initial assumptions of χ, our workflow combines Bayesian optimization, Flory–Rehner theory, and symbolic regression to generate candidate χ expressions.
Yawen Wang, Adrian Ehrenhofer, Thomas Wallmersperger   +2 more
wiley   +1 more source

Performance evaluation of generalized optical spatial modulation with dimming support

, 2018
In this paper, we propose a modified generalized spatial modulation (MGSM) scheme with dimming support for indoor optical wireless communication (OWC) systems. The spatial indices of the active LEDs and their transmitted optical power levels are utilized
O'Farrell, Timothy, Biagi, Mauro, Mauro Biagi, Singh, Ravinder, Bui, Thai-Chien, Ravinder Singh, Timothy O'Farrell, Thai-Chien Bui   +7 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

All‐in‐One Analog AI Hardware: On‐Chip Training and Inference with Conductive‐Metal‐Oxide/HfOx ReRAM Devices

Advanced Functional Materials, EarlyView.
An all‐in‐one analog AI accelerator is presented, enabling on‐chip training, weight retention, and long‐term inference acceleration. It leverages a BEOL‐integrated CMO/HfOx ReRAM array with low‐voltage operation (<1.5 V), multi‐bit capability over 32 states, low programming noise (10 nS), and near‐ideal weight transfer.
Donato Francesco Falcone, Victoria Clerico, Wooseok Choi, Tommaso Stecconi, Folkert Horst, Laura Bégon‐Lours, Matteo Galetta, Antonio La Porta, Nikhil Garg, Fabien Alibart, Bert Jan Offrein, Valeria Bragaglia   +11 more
wiley   +1 more source