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Now showing items 665-684 of 5783
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Channel estimation for amplify-and forward relaying: cascaded against disintegrated estimators
(IEEE, 2010)The authors investigate the performance of amplify-and-forward relaying with two different pilot-symbol-assisted channel estimation methods. In the first estimation method, the cascaded channel consisting of source-to-relay ... -
Channel estimation in underwater cooperative OFDM system with amplify-and-forward relaying
(IEEE, 2012)This paper is concerned with a challenging problem of channel estimation for amplify-and-forward cooperative relay based orthogonal frequency division multiplexing (OFDM) systems in the resence of sparse underwater acoustic ... -
Channel measurements and ray tracing simulations for MIMO light communication at 200 MHz
(IEEE, 2020-09)In this paper, we investigate 2 × 2 MIMO light communication channels using non-sequential ray tracing simulations, and measurements over 200 MHz bandwidth using a MIMO channel sounder. Results indicate good agreement ... -
Channel modeling and characterization for visible light communications
(IEEE, 2015-12)In this paper, we present a comprehensive channel modeling and characterization study for visible light communications. Our study is based on ray tracing, which allows for an accurate description of the interaction of rays ... -
Channel modeling and characterization for visible light communications: indoor, vehicular and underwater channels
(2018-06)Despite the increasing attention on visible light communications (VLC) systems, there is a lack of proper visible light (VL) channel models. This is a serious concern since channel modeling is the very first step for ... -
Channel modeling and performance characterization of underwater visible light communications
(IEEE, 2018-07-03)Underwater visible light communication (UVLC) has emerged as an attractive complementary solution to long-range acoustic communication and is able to achieve much higher data speeds. In this paper, we investigate the ... -
Channel modeling for vehicular visible light communication
The demand for vehicular communication systems has increased since they are considered the key enabling technology for Intelligent Transportation Systems (ITSs). Vehicular communications allow information sharing between ... -
Channel modeling for visible light communications
(Springer Science+Business Media, 2016)In this chapter, we present a novel and realistic channel modeling approach for visible light communications that overcomes to the limitations of previous works. In our work, we consider wavelength dependency, effect of ... -
Channel modelling and characterization for visible light communications
(2014-08)Visible light communications (VLC) involve the dual use of illumination infrastructure (i.e., LEDs) for wireless communication purposes. Despite the growing academic and industrial interest, there is a lack of realistic ... -
Channel modelling and performance limits of vehicular visible light communication systems
(IEEE, 2020-07)Visible light communication (VLC) has been proposed as an alternative or complementary technology to radio frequency vehicular communications. Front and back vehicle lights can serve as wireless transmitters making VLC a ... -
Channel modelling for indoor visible light communications
(Royal Society Publishing, 2020-04-17)Visible light communication (VLC) allows the dual use of light-emitting diodes (LEDs) for wireless communication purposes in addition to their primary purpose of illumination. As in any other communication system, realistic ... -
Channel modelling for light communications: Validation of ray tracing by measurements
(IEEE, 2020)Light communications, also denoted as LiFi, is promising for future wireless indoor networks. For performance evaluation, the IEEE P802.15.13 and P802.11bb standardization groups agreed upon channel models based on ... -
Chaotic polarization-assisted L DPSK-MPPM modulation for free-space optical communications
(IEEE, 2019-09)In this paper, we present a polarization-assisted L-ary differential phase-shift keying multipulse pulse-position modulation (PA.LDPSK-MPPM) technique that is secured in the physical layer by a discrete-chaos system. The ... -
Characteristics of low reynolds number steady air jet impingement heat transfer over vertical flat surfaces
(IEEE, 2012)In this paper, heat transfer characteristics of single-slot steady-impinging air jets on a 25.4 mm × 25.4 mm vertical surface were experimentally investigated. The experiments were conducted with four different nozzles ... -
Characterization and antibacterial properties of nanoboron powders and nanoboron powder coated textiles
(Elsevier, 2017-02)The antibacterial properties of boron-containing compounds are well known although there are limited studies available on the pure boron nanoparticles. In this paper, nanoboron particles are characterized in terms of their ... -
Characterization of chemically modified thin films for optimization of metal CMP applications?
(Cambridge University Press, 2013)Metal CMP applications necessitate the formation of a protective oxide film in the presence of surface active agents, oxidizers, pH regulators and other chemicals to achieve global planarization. Formation and mechanical ... -
Characterization of LEDs for visible-light communications
(SPIE, 2021-02)Recent advances in solid-state technologies have enabled the development of light-emitting diodes (LEDs) with favorable features such as long life expectancy, low-power consumption, and reduced heat dissipation. Visible-light ... -
Characterization of nano-scale protective oxide films: application on metal chemical mechanical planarization
(The Electrochemical Society, 2015)This study focuses on the characterization of nano-scale metal oxide films for chemical mechanical planarization (CMP) applications. The protective nature of the self-grown metal oxide layers in the CMP slurry environment ... -
Characterization of orbital angular momentum-multiplexed FSO channel in the presence of pointing errors
(IEEE, 2023)Free space optical communication (FSO) uses laser transmitters at near-infrared wavelengths for line-of-sight wireless communication. Through the use of advanced laser beams instead of the conventional Gaussian-shaped beam, ... -
Characterization of silver Ions-doped organomodified nanoclays
(Springer, 2023-01)In this study, montmorillonite (MMT) and halloysite nanoclays were organomodified with cationic surfactants N-cetyl-N, N, N-trimethylammonium bromide (CTAB) and poly diallyl dimethylammonium chloride (PDAC) to enhance ...
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