Results 141 to 150 of about 5,341,111 (402)

Opportunistic Spectrum Sharing Based on OFDM With Index Modulation

open access: yesIEEE Transactions on Wireless Communications, 2020
In this paper, a novel opportunistic spectrum sharing scheme, based on orthogonal frequency division multiplexing with index modulation (OFDM-IM), is proposed for cognitive radio (CR) networks.
Qiang Li   +5 more
semanticscholar   +1 more source

A Seven-level defined selective harmonic elimination PWM strategy [PDF]

open access: yes, 2006
Selective harmonic elimination pulse-width modulation (SHE-PWM) techniques offer an optimized control approach for a given converter and are therefore suitable for the low switching frequency high-power applications.
Agelidis, V.G., Balouktsis, A.I.
core   +1 more source

Tunable dynamic Fano resonances in coupled-resonant optical waveguide

open access: yes, 2015
A route toward lineshape engineering of Fano resonances in photonic structures is theoretically proposed, which uses dynamic modulation of the refractive index of a microcavity. The method is exemplified by considering coupled-resonator optical waveguide
Longhi, Stefano
core   +1 more source

Brucella NyxA and NyxB dimerization enhances effector function during infection

open access: yesFEBS Letters, EarlyView.
Brucella abortus thrives inside cells thanks to the translocation of effector proteins that fine‐tune cellular functions. NyxA and NyxB are two effectors that destabilize the nucleolar localization of their host target, SENP3. We show that the Nyx proteins directly interact with each other and that their dimerization is essential for their function ...
Lison Cancade‐Veyre   +4 more
wiley   +1 more source

Index character associated to the projective Dirac operator [PDF]

open access: yesarXiv, 2011
We calculate the equivariant index formula for an infinite dimensional Clifford module canonically associated to any Riemannian manifold. It encompasses the fractional index formula of the projective Dirac operator by Mathai--Melrose--Singer.
arxiv  

Composite Multiple-Mode Orthogonal Frequency Division Multiplexing With Index Modulation

open access: yesIEEE Transactions on Wireless Communications, 2023
Jun Li   +6 more
semanticscholar   +1 more source

Dual-carrier Floquet circulator with time-modulated optical resonators

open access: yes, 2017
Spatio-temporal modulation has shown great promise as a strong time-reversal symmetry breaking mechanism that enables integrated nonreciprocal devices and topological materials at optical frequencies.
Mousavi, S. Hossein   +2 more
core   +2 more sources

B cell mechanobiology in health and disease: emerging techniques and insights into therapeutic responses

open access: yesFEBS Letters, EarlyView.
B cells sense external mechanical forces and convert them into biochemical signals through mechanotransduction. Understanding how malignant B cells respond to physical stimuli represents a groundbreaking area of research. This review examines the key mechano‐related molecules and pathways in B lymphocytes, highlights the most relevant techniques to ...
Marta Sampietro   +2 more
wiley   +1 more source

Eventually index of reducibility on sequentially Cohen-Macaulay modules [PDF]

open access: yesarXiv, 2015
It is shown that a module is sequentially Cohen-Macaulay if and only if the index of reducibility for distinguished parameter ideals are eventually constant with special value. As corollaries to the main theorem we given to characterize the Gorensteinness, Cohen-Macaulayness of local rings in term of eventually index of reducibility for distinguished ...
arxiv  

Multi-Carrier $M$-ary DCSK System With Code Index Modulation: An Efficient Solution for Chaotic Communications

open access: yesIEEE Journal on Selected Topics in Signal Processing, 2019
A new multi-carrier $M$-ary differential chaos shift keying system with code index modulation, referred to as CIM-MC-$M$-DCSK, is proposed in this paper.
Guofa Cai   +5 more
semanticscholar   +1 more source

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