Results 21 to 30 of about 129,716 (164)

Dynamic Spectrum Assignment in Passive Optical Networks Based on Optical Integrated Microring Resonators Using Machine Learning and a Routing, Modulation Level, and Spectrum Assignment Method

Applied Sciences, 2023
The rising demand for bandwidth in optical communication networks has led to the need for more efficient solutions for spectrum allocation. This article presents a solution to enhance the capacity and efficiency of passive optical networks (PON) using ...
Andrés F. Calvo-Salcedo, Neil Guerrero González, Jose A. Jaramillo-Villegas   +2 more
doaj   +1 more source

Efficient spectrum sharing with avoiding spatial fragmentation of white space

ICT Express, 2015
This letter proposes an efficient spectrum sharing by using a smart channel selection with considering the spatial shape of white space (WS) for cognitive radio systems.
Takashi Kosugi, Takeo Fujii
doaj   +1 more source

Channel Assignment Based on CSMA-Aware Interference Model With Overlapped Channels in Multiradio Multichannel Wireless Mesh Networks

IEEE Access, 2022
Multi-radio Multi-channel Wireless Mesh Networks (MRMC WMNs) implemented on IEEE 802.11 standards are widely used owing to their adaptability in practical network scenarios.
Yi Tian, Takuya Yoshihiro
doaj   +1 more source

Assignments in the electronic spectrum of water [PDF]

The Journal of Chemical Physics, 1974
To explain the inelastic feature at 4.5 eV in the spectrum of water and to study its spectrum in some detail, we have carried out several calculations on the excited states of water using the equations-of-motion method. We conclude that the calculated vertical excitation energy of 6.9 eV for the 3B1 state corresponds to the strong feature at 7.2 eV ...
Yeager, Danny, McKoy, Vincent, Segal, G. A.   +2 more
openaire   +2 more sources

Spectrum Assignment in Hardware-Constrained Cognitive Radio IoT Networks Under Varying Channel-Quality Conditions

IEEE Access, 2019
The integration of cognitive radio (CR) technology with the future Internet-of-Things (IoT) architecture is expected to allow effective massive IoT deployment by providing huge spectrum opportunities to the IoT devices.
Haythem A. Bany Salameh, Saham Al-Masri, Elhadj Benkhelifa, Jaime Lloret   +3 more
doaj   +1 more source

A New Algorithm to Mitigate Fragmentation and Crosstalk in Multi-Core Elastic Optical Networks

Photonics
This paper proposes a core and spectrum allocation algorithm for elastic optical networks based on multi-core fibers. In this context, the fragmentation and crosstalk mitigation algorithm (FraCA) is proposed.
Jurandir C. Lacerda Jr., Aline G. Morais, Adolfo V. T. Cartaxo, André C. B. Soares   +3 more
doaj   +1 more source

Spectrum Assignment with Non-Deterministic Bandwidth of Spectrum Holein Cognitive Radio Networks

MATEC Web of Conferences, 2016
The spectrum allocation for cognitive radio networks (CRNs) has received considerable studies under the assumption that the bandwidth of spectrum holes is static.
Huang Jie, He Yuan, Zeng Xiaoping, Tan Xiaoheng, Miao Lijuan   +4 more
doaj   +1 more source

Arbitrary Coefficient Assignment by Static Output Feedback for Linear Differential Equations with Non-Commensurate Lumped and Distributed Delays

Mathematics, 2021
We consider a linear control system defined by a scalar stationary linear differential equation in the real or complex space with multiple non-commensurate lumped and distributed delays in the state.
Vasilii Zaitsev, Inna Kim
doaj   +1 more source

A Resource Allocation Scheme for Multi-D2D Communications Underlying Cellular Networks with Multi-Subcarrier Reusing

Applied Sciences, 2017
Device-to-device (D2D) communication is proposed as a promising technique of future cellular networks which fulfills its potential in terms of high resource utilization.
Yong Zhang, Fangmin Li, Mohammed Abdulaziz Aide Al-qaness, Xidao Luan   +3 more
doaj   +1 more source

Link Resource-Aware RMSA Algorithm for Advance Reservation Requests in Semi-Filterless Optical Networks

Photonics, 2023
This paper investigates the routing, modulation, and spectrum assignment (RMSA) problem for advance reservation (AR) requests in semi-filterless optical networks (semi-FONs).
Junling Yuan, Suhua Wang, Yanyan Xie, Xuhong Li, Qikun Zhang, Jing Zhang   +5 more
doaj   +1 more source