Results 51 to 60 of about 604,964 (331)

Optical Wireless Communications Using Signal Space Diversity with Spatial Modulation

Photonics, 2021
A signal space diversity (SSD) scheme was proposed to be incorporated with spatial modulation (SM) in an intensity-modulation/direct-detection-based multiple-input-single-output (MISO) indoor optical wireless communication (OWC) system to improve bit ...
Tingting Song, Christina Lim, Ampalavanapillai Nirmalathas, Ke Wang   +3 more
doaj   +1 more source

Edge magnetoplasmons in periodically modulated structures

, 1999
We present a microscopic treatment of edge magnetoplasmons (EMP's) within the random-phase approximation for strong magnetic fields, low temperatures, and filling factor $\nu =1(2)$, when a weak short-period superlattice potential is imposed along the ...
C. Albrecht, C. de Chamon, D. Pfannkuche, D. Weiss, D. Weiss, D.B. Chklovskii, D.J. Thouless, F. Nihey, F. von Oppen, G. Ernst, G. Muller, H.L. Cui, I.L. Aleiner, J. Dempsey, J.H. Smet, J.S. Giovanazzi, K. Tanaka, L. Brey, L.D. Landau, M. Stone, N.B. Zhitenev, N.B. Zhitenev, Nelson Studart, O. G. Balev, O.G. Balev, O.G. Balev, O.G. Balev, O.G. Balev, O.G. Balev, P. Vasilopoulos, P. Vasilopoulos, R.A. Deutschamann, R.C. Ashoori, R.L. Willet, R.L. Willet, R.R. Gerhardts, R.W. Winkler, S. Ishizaka, S.D.M. Zwerschke, S.M. Stewart, T. Schlosser, T. Suzuki, V. Gudmundsson, V.A. Volkov, X.G. Wen   +44 more
core   +1 more source

A Survey on Physical Layer Techniques and Challenges in Underwater Communication Systems

Journal of Marine Science and Engineering, 2023
In the past decades, researchers/scientists have paid attention to the physical layer of underwater communications (UWCs) due to a variety of scientific, military, and civil tasks completed beneath water.
Naveed Ur Rehman Junejo, Mariyam Sattar, Saifullah Adnan, Haixin Sun, Abuzar B. M. Adam, Ahmad Hassan, Hamada Esmaiel   +6 more
doaj   +1 more source

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

FEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

NOMA-Based Spatial Modulation

IEEE Access, 2017
Spatial modulation (SM) has emerged as a low-complexity and energy-efficient multiple-input multiple-output transmission technique, where the information bits are not only transmitted by amplitude phase modulation but also conveyed by the index of ...
Xudong Zhu, Zhaocheng Wang, Jianfei Cao
doaj   +1 more source

Tailoring Čerenkov second-harmonic generation in bulk nonlinear photonic crystal [PDF]

, 2016
We investigate theoretically the Čerenkov-type second-harmonic generation in two-dimensional bulk nonlinear photonic crystal with longitudinal modulation of the (2) nonlinearity.
Cojocaru, Crina, Kalinowski, Ksawery, Kong, Qian, Krolikowski, Wieslaw, Roppo, Vito, Sheng, Yan, Trull, Jose, Wang, Qi   +7 more
core   +1 more source

Reciprocal control of viral infection and phosphoinositide dynamics

FEBS Letters, EarlyView.
Phosphoinositides, although scarce, regulate key cellular processes, including membrane dynamics and signaling. Viruses exploit these lipids to support their entry, replication, assembly, and egress. The central role of phosphoinositides in infection highlights phosphoinositide metabolism as a promising antiviral target.
Marie Déborah Bancilhon, Bruno Mesmin
wiley   +1 more source

A low-complexity detection algorithm for quadrature spatial modulation systems

Dianxin kexue, 2017
To tackle the issues of the uncertainty number of the activated antennas and high computational complexity of maximum likelihood (ML) detection algorithm in quadrature spatial modulation (QSM),a low-complexity detec-tion algorithm was proposed.Firstly ...
Kai LUO, Junwei HUANG, Pengguang ZHOU, Hao XU, Can WU   +4 more
doaj   +2 more sources

Azimuthons: Spatially Modulated Vortex Solitons [PDF]

Physical Review Letters, 2005
We introduce a novel class of spatially localized self-trapped ringlike singular optical beams in nonlinear media, the so-called azimuthons, which appear due to a continuous azimuthal deformation of vortex solitons. We demonstrate that the azimuthons are characterized by two independent integer indices, the topological charge m and the number N of the ...
Desyatnikov, Anton S, Sukhorukov, Andrey, Kivshar, Yuri   +2 more
openaire   +3 more sources

By dawn or dusk—how circadian timing rewrites bacterial infection outcomes

FEBS Letters, EarlyView.
The circadian clock shapes immune function, yet its influence on infection outcomes is only beginning to be understood. This review highlights how circadian timing alters host responses to the bacterial pathogens Salmonella enterica, Listeria monocytogenes, and Streptococcus pneumoniae revealing that the effectiveness of immune defense depends not only
Devons Mo, Catherine S. Palmer, Jacqueline M. Kimmey   +2 more
wiley   +1 more source