Wireless Transmission
Mostrando 1-12 de 56 artigos, teses e dissertações.
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1. FD MAC Protocol Design for Co-Existing WLANs in 5G Cellular Networks
Abstract In this paper, we design full-duplex (FD) medium access control (MAC) protocol for co-existing wireless local area networks (WLANs) in 5G cellular networks (WCFD-MAC). Our design considers some significant features of 5G networks, exceptionally, beamforming and FD capabilities at both, the base station and user equipment. FD communications may gener
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2021-03
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2. Editorial Comment: Penile cancer information on the internet: a needle in a haystack
Abstract A good wireless network design depends on technical and financial viability and a number of other criteria that must be met. Following the emergence of new technologies and services, such as 5G transmission and the reuse of frequencies, new work is being carried out to ensure a better design for a particular area. This study examines a discrete radi
Int. braz j urol.. Publicado em: 2020-12
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3. Optimum Positioning of Base Station for Cellular Service Devices Using Discrete Knowledge Model
Abstract A good wireless network design depends on technical and financial viability and a number of other criteria that must be met. Following the emergence of new technologies and services, such as 5G transmission and the reuse of frequencies, new work is being carried out to ensure a better design for a particular area. This study examines a discrete radi
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2020-12
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4. Analysis and Optimization of Ultra-Low-Power Rectifier with High Efficiency for Applications in Wireless Power Transmission and Energy Harvesting
Abstract The system capable of harvesting RF energy from the environment through an antenna and converting it into direct current energy to deliver to a load is known as rectenna. The rectifier circuit is an important part of the rectenna and its modeling is arduous since it employs a non-linear device working at extremely low power levels. In addition, ther
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2020-03
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5. Low-cost wireless sensor network applied to real-time monitoring and control of water consumption in residences
Resumo O objetivo deste trabalho é realizar o monitoramento e o controle em tempo real do consumo de água nas residências, com feedback aos usuários e de baixo custo. As informações de consumo de água serão disponibilizadas na nuvem e poderão ser acessadas através de um aplicativo de celular. Os dados coletados possibilitam que a concessionária de
Rev. Ambient. Água. Publicado em: 28/11/2019
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6. Desenvolvimento de sistema de baixo custo para monitoramento de integridade estrutural
RESUMO O Monitoramento da Integridade Estrutural (MIE) pode ser utilizado para avaliar as condições de integridade de uma estrutura, ou ainda para verificar modelos de comportamento da mesma. Os atuais sistemas de monitoramento aplicados em grandes estruturas, contam com inúmeros sensores, dos mais variados tipos, que formam redes de comunicação, em alg
Matéria (Rio J.). Publicado em: 25/11/2019
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7. Simulation and Design of a Bandpass Filter Based on Substrate Integrated E-Plane Waveguide
Abstract This paper presents a bandpass filter based on a substrate integrated E-plane waveguide (SIEW) structure for wireless applications, at X-band. The SIEW geometry allows the development of new horizontally polarized filter topologies, unlike filter structures based on substrate integrated waveguide (SIW), which present vertical polarization (perpendic
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 12/09/2019
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8. ELECTRONIC MONITORING SYSTEM FOR MEASURING HEART RATE AND SKIN TEMPERATURE IN SMALL RUMINANTS
Abstract The electronic monitoring of physiological responses is essential for managing animal production systems considering market demands for animal welfare. The objective of this study was to design, build, and test an electronic monitoring system, with recording and wireless transmission capability, for measuring the heart rate and skin temperature in s
Eng. Agríc.. Publicado em: 2018-04
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9. Energy Efficient Rate Adaptation Algorithm for FiWi Access Network
Abstract Similar to any telecommunication network, energy efficiency is a desirable feature for fiber wireless (FiWi) access networks. These networks have optical back end and wireless front end. Both ends may contribute for energy efficiency. This work focuses on front end of FiWi access network, which is IEEE 802.11a wireless local area network (WLAN). For
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2017-12
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10. AN OPTIMIZATION MODEL TO MINIMIZE THE EXPECTED END-TO-END TRANSMISSION TIME IN WIRELESS MESH NETWORKS
ABSTRACT Time metrics are extremely important to evaluate the transmission performance on Wireless Mesh Networks (WMNs), whose main characteristic is to use multihop technology to extend the network coverage area. One of such metrics is WCETT (Weighted Cumulative Expected Transmission Time), in which transmission times per hop are weighted for both proactive
Pesqui. Oper.. Publicado em: 2017-08
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11. Optically controlled reconfigurable antenna for 5G future broadband cellular communication networks
Abstract This paper presents an optically controlled reconfigurable antenna for millimetre-wave frequency range. Silicon switches are used to control the optical reconfiguration, modifying the frequency response and radiation pattern of the antenna design. Therefore, the system can switch between the lightly licensed 28 GHz and 38 GHz frequency bands, useful
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2017-03
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12. A Compact UWB Bandpass Filter using Hybrid Fractal Shaped DGS
Abstract In this paper, a novel and compact ultra wideband (UWB) bandpass filter (BPF) based on fractal-shaped defected ground structure (DGS) is designed and developed. It is made of stepped impedance lines and a composite right/left handed-transmission line (CRLH-TL) constructed with capacitive gap in conductor strip and a hybrid fractal-shaped ring slot i
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2017-03