Results 81 to 90 of about 517,702 (295)

Modulating Two‐Photon Absorption in a Pyrene‐Based MOF Series: An In‐Depth Investigation of Structure–Property Relationships

open access: yesAdvanced Functional Materials, EarlyView.
This study investigates H4TBAPy‐based metal–organic frameworks (MOFs) ‐ NU‐1000, NU‐901, SrTBAPy, and BaTBAPy ‐ for multiphoton absorption (MPA) performance. It observes topology‐dependent variations in the 2PA cross‐section, with BaTBAPy exhibiting the highest activity.
Simon N. Deger   +10 more
wiley   +1 more source

Wireless Spread Spectrum Communication Channel Modelling and Simulation Technical Area: Wireless Communication [PDF]

open access: yes, 2002
This paper deals with Wireless Spread Spectrum Communication Link design and planning using Direct Sequence Spread Spectrum (DSSS) technique. The theoretical and mathematical models are developed for simulation and performance evaluation. The purpose of
Abdalla, Ashraf Gasim Elsid   +2 more
core  

Laser‐Induced Graphene from Waste Almond Shells

open access: yesAdvanced Functional Materials, EarlyView.
Almond shells, an abundant agricultural by‐product, are repurposed to create a fully bioderived almond shell/chitosan composite (ASC) degradable in soil. ASC is converted into laser‐induced graphene (LIG) by laser scribing and proposed as a substrate for transient electronics.
Yulia Steksova   +9 more
wiley   +1 more source

Mobile direct-sequence spread-spectrum underwater acoustic communication based on improved differential energy detector

open access: yesTongxin xuebao, 2017
A Doppler estimation method based on the structural features of spread spectrum signal was proposed,which could achieve real-time Doppler estimation for received spread spectrum signals by energy detecting the result of matching correlation calculation ...
Peng-yu DU   +3 more
doaj   +2 more sources

Quantum Direct-Sequence Spread-Spectrum CDMA Communication Systems: Mathematical Foundations

open access: yesIEEE Transactions on Quantum Engineering
This article describes the fundamental principles and mathematical foundations of quantum direct-sequence spread-spectrum code division multiple-access communication systems.
Mohammad Amir Dastgheib   +2 more
doaj   +1 more source

Code Synchronization Algorithm Based on Segment Correlation in Spread Spectrum Communication

open access: yesAlgorithms, 2015
Spread Spectrum (SPSP) Communication is the theoretical basis of Direct Sequence Spread Spectrum (DSSS) transceiver technology. Spreading code, modulation, demodulation, carrier synchronization and code synchronization in SPSP communications are the core
Aohan Li   +4 more
doaj   +1 more source

Spread spectrum communication link using surface wave devices [PDF]

open access: yes
A fast lock-up, 8-MHz bandwidth 8,000 bit per second data rate spread spectrum communication link breadboard is described that is implemented using surface wave devices as the primary signal generators and signal processing elements. It uses surface wave
Fugit, B. B., Hunsinger, B. J.
core   +1 more source

From communication complexity to an entanglement spread area law in the ground state of gapped local Hamiltonians

open access: yes, 2020
In this work, we make a connection between two seemingly different problems. The first problem involves characterizing the properties of entanglement in the ground state of gapped local Hamiltonians, which is a central topic in quantum many-body physics.
Anshu, Anurag   +2 more
core  

Spectrally Tunable 2D Material‐Based Infrared Photodetectors for Intelligent Optoelectronics

open access: yesAdvanced Functional Materials, EarlyView.
Intelligent optoelectronics through spectral engineering of 2D material‐based infrared photodetectors. Abstract The evolution of intelligent optoelectronic systems is driven by artificial intelligence (AI). However, their practical realization hinges on the ability to dynamically capture and process optical signals across a broad infrared (IR) spectrum.
Junheon Ha   +18 more
wiley   +1 more source

Competitive Spectrum Management with Incomplete Information

open access: yes, 2010
This paper studies an interference interaction (game) between selfish and independent wireless communication systems in the same frequency band. Each system (player) has incomplete information about the other player's channel conditions.
Leshem, Amir, Messer, Hagit, Noam, Yair
core   +1 more source

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