Results 101 to 110 of about 5,341,111 (402)

Nanoarcsecond single-dish imaging of the Vela pulsar

open access: yes, 2000
We have measured the properties of the diffractive scintillation toward the Vela pulsar under the extremely strong scattering conditions encountered at 660 MHz.
Johnston, S.   +3 more
core   +1 more source

Electrooptic Modulation in Thin Film Barium Titanate Plasmonic Interferometers [PDF]

open access: yes, 2008
We demonstrate control of the surface plasmon polariton wavevector in an active metal−dielectric plasmonic interferometer by utilizing electrooptic barium titanate as the dielectric layer.
Atwater, Harry A.   +5 more
core   +1 more source

Refining the NaV1.7 pharmacophore of a class of venom‐derived peptide inhibitors via a combination of in silico screening and rational engineering

open access: yesFEBS Letters, EarlyView.
Venom peptides have shown promise in treating pain. Our study uses computer screening to identify a peptide that targets a sodium channel (NaV1.7) linked to chronic pain. We produced the peptide in the laboratory and refined its design, advancing the search for innovative pain therapies.
Gagan Sharma   +8 more
wiley   +1 more source

OFDM transmission scheme with subcarrier supply index modulation

open access: yesTongxin xuebao, 2023
To address the drawback that subcarrier activation pattern (SAP) of the orthogonal frequency division multiplexing with index modulation (OFDM-IM) cannot match the binary numbers which affects the system performance, the orthogonal frequency division ...
Yi GUO   +3 more
doaj  

Space-Time Multiple-Mode Orthogonal Frequency Division Multiplexing With Index Modulation

open access: yesIEEE Access, 2017
Multiple-mode orthogonal frequency division multiplexing with index modulation (MM-OFDM-IM) improves the spectral efficiency of the conventional OFDM-IM scheme by considering multiple distinguishable constellations for signal modulation.
Jun Li   +3 more
doaj   +1 more source

Performance Analysis of Novel Index Modulation-Based Non-Orthogonal Multiple Access Systems over Nakagami-m Fading Channels with Imperfect CSI [PDF]

open access: yesRadioengineering, 2023
In this paper, a novel index modulation-based non-orthogonal multiple access (IM-NOMA) system is proposed and investigated for both perfect and imperfect channel state information (CSI) uncertainty over Nakagami-m fading channel.
H. M. Shwetha, S. Anuradha
doaj  

Efficient Cluster Heads Selection Based on Index-Modulation in Wireless Sensor Networks

open access: yesIEEE Access, 2023
Index-Modulation (IM) has been recently emerged as a promising direction towards improving error performance and spectral efficiency in wireless networks.
Saud Althunibat   +2 more
doaj   +1 more source

Twisted Demazure modules, fusion product decomposition and twisted Q--systems [PDF]

open access: yesRepresent. Theory 20 (2016), 94-127, 2014
In this paper, we introduce a family of indecomposable finite-dimensional graded modules for the twisted current algebras. These modules are indexed by an $|R^+|$-tuple of partitions $\bxi=(\xi^{\alpha})_{\alpha\in R^+}$ satisfying a natural compatibility condition.
arxiv   +1 more source

Novel Index Modulation Techniques: A Survey

open access: yesIEEE Communications Surveys and Tutorials, 2019
In fifth generation wireless networks, the escalating teletraffic and energy consumption has necessitated the development of green communication techniques in order to further enhance both the system’s spectral efficiency and energy efficiency.
Tianqi Mao   +3 more
semanticscholar   +1 more source

Dynamic Channel Allocation Techniques Using Adaptive Modulation and Adaptive Antennas

open access: yes, 2001
This contribution studies the impact of adaptive quadrature amplitude modulation (AQAM) on network performance when applied to a cellular network, using adaptive antennas in conjunction with both fixed channel allocation (FCA) and locally distributed ...
Blogh, J.S., Cherriman, P.J., Hanzo, L.
core   +1 more source

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