Fading In
Mostrando 1-12 de 103 artigos, teses e dissertações.
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1. Multi-Step-Ahead Spectrum Prediction for Cognitive Radio in Fading Scenarios
Abstract This paper analyzes multi-step-ahead spectrum prediction for Cognitive Radio (CR) systems using several future states. A slot-based scenario is used, and prediction is based on the Support Vector Machine (SVM) algorithm. The aim is to determine whether multi-step-ahead spectrum prediction has gains in terms of reduced channel-switching and increased
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2020-12
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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. A Construction of Rotated Lattices via Totally Real Subfields of the Cyclotomic Field ℚ(ζp)
RESUMO A teoria de reticulados têm mostrado útil na teoria da informação e reticulados ideais com alta diversidade de modulação têm sido extensamente estudados como uma alternativa de transmissão via o canal de Rayleigh, onde o desempenho destes esquemas de modulação depende essencialmente da diversidade de modulação e da distância produto míni
TEMA (São Carlos). Publicado em: 13/12/2019
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5. Evaluation of OFDM Channel Sounding Techniques with Three Modulation Sequences
Abstract This paper presents an evaluation of multicarrier channel sounding techniques using different random and pseudo-random sequences to modulate the OFDM sounding signal. The Random (Rand), Pseudo-Noise (PN) and Zadoff-Chu (ZC) were tested, both in laboratory simulations and in field measurements. For the laboratory simulations Matlab routines were used
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 11/11/2019
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6. Comparative study between intravitreal ranibizumab and triamcinolone treatment of diabetic macular edema as regard to optical coherence tomography changes and visual acuity
Resumo Objetivos: Comparar o efeito do ranibizumabe intravítreo (0,3mg) e triacmicinolona (4mg) em diferentes parâmetros do domínio espectral da OCT e sua relação com a acuidade visual de pacientes com edema macular diabético. Métodos: Este estudo foi concebido como um estudo prospectivo randomizado. Os pacientes foram divididos aleatoriamente em 2
Rev. bras.oftalmol.. Publicado em: 12/08/2019
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7. LA RETRADUCTION DE POEMA A FUMETTI DE DINO BUZZATI : UNE RÉÉCRITURE POST-IDÉOLOGIQUE ?
Resumo Em 1969, Dino Buzatti publica seu Poema a fumetti [Poema em quadrinhos], uma obra sui generis, a meio-caminho entre o poema ilustrado e a estória em quadrinhos, na qual o artista nos oferece um mito de Orfeu atualizado, transformado pela contemporaneidade dos anos 1960. Poema a fumetti conhece, a seguir, duas traduções na França: a de Max Gallo e
Cad. Trad.. Publicado em: 27/05/2019
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8. As narrativas de Mona Hatoum e o efeito de ‘contraponto’: des-emoldurando o doméstico enquanto performatividade e gesto político
Resumo: Na minha intervenção procurarei focar aspectos vários da poética visual e narrativa da artista palestiniana Mona Hatoum, há longos anos exilada em Londres e Berlim, à luz do conceito de “contraponto”, de Edward Said, e da sua interrogação das fronteiras do público e do privado. A desfamiliarização do espaço doméstico e dos objectos �
Rev. Estud. Fem.. Publicado em: 14/03/2019
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9. Livedo reticularis by hypothermia during anesthesia for dental treatment in Down's syndrome patient
Resumo Justificativa: O livedo reticular representa quadro dermatológico benigno, caracterizado por áreas isquêmicas permeadas por áreas eritematocianóticas em padrão rendilhado, pode ser transitório ou permanente e frequentemente é associado à exposição corporal ao frio. O vasoespasmo arterial cutâneo promove a isquemia e a dilatação venosa d
Rev. Bras. Anestesiol.. Publicado em: 2019-01
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10. Grain Refinement of Al-5Ti-0.62C-0.2Nd Grain Refiner for Commercial Pure Aluminum and Its Effect on Mechanical Properties
It is well known that the mechanical properties of commercial pure Al are influenced by size of α-Al dendrites. In the present work, Al-5Ti-0.62C-0.2Nd grain refiner was prepared by a pure molten aluminum thermal explosion reaction, and its effect on grain refinement and mechanical properties of commercial pure Al was investigated. Microstructure and phase
Mat. Res.. Publicado em: 03/12/2018
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11. ANALYTICAL COMPARISON OF THE PERFORMANCE OF ADAPTIVE MODULATION AND CODING IN WIRELESS NETWORK UNDER RAYLEIGH FADING
Abstract In this paper, an analytic comparison between adaptive modulation (AdM) and adaptive Forward Error Correction (AdFEC) in wireless network telecommunication systems is performed. Through the Gilbert-Elliott model's, the Packet Error Rate (PER) is calculated and both the throughput and the delay, for different modulations and error correction capacity
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2017-09
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12. Fading and graphite nucleation sites in grey iron inoculated using silicon carbide
ABSTRACT The most commonly used inoculants for producing grey iron are ferrosilicon based, but also there are reports indicating that silicon carbide can act as inoculant. There are few published studies of fading and nucleation sites of graphite when silicon carbide is used as inoculant, thus the understanding of the inoculation effect of silicon carbide is
Matéria (Rio J.). Publicado em: 22/06/2017