Results 31 to 40 of about 23,872 (186)

Safety Recommendations for Evaluation and Surgery of the Head and Neck During the COVID-19 Pandemic [PDF]

open access: yes, 2020
Importance The rapidly expanding novel coronavirus disease 2019 (COVID-19) pandemic, caused by severe acute respiratory syndrome coronavirus 2, has challenged the medical community to an unprecedented degree.
Chinn, Steven B.   +13 more
core   +1 more source

Two novel nonlinear companding schemes with iterative receiver to reduce PAPR in multi-carrier modulation systems [PDF]

open access: yes, 2006
Companding transform is an efficient and simple method to reduce the Peak-to-Average Power Ratio (PAPR) for Multi-Carrier Modulation (MCM) systems.
Guo, P, Jiang, T, Qu, D, Song, Y, Yao, W
core   +1 more source

Data Detection and Code Channel Allocation for Frequency-Domain Spread ACO-OFDM Systems Over Indoor Diffuse Wireless Channels [PDF]

open access: yes, 2014
Future optical wireless communication systems promise to provide high-speed data transmission in indoor diffuse environments. This paper considers frequency-domain spread asymmetrically clipped optical orthogonal frequency-division multiplexing (ACOOFDM)
Chen, Ming   +4 more
core   +1 more source

Signal and System Design for Wireless Power Transfer : Prototype, Experiment and Validation [PDF]

open access: yes, 2020
A new line of research on communications and signals design for Wireless Power Transfer (WPT) has recently emerged in the communication literature. Promising signal strategies to maximize the power transfer efficiency of WPT rely on (energy) beamforming,
Clerckx, Bruno   +2 more
core   +2 more sources

Design of a 900 MHz Dual-Mode SWIPT for Low-Power IoT Devices

open access: yesSensors, 2019
This paper presents a duty cycle-based, dual-mode simultaneous wireless information and power transceiver (SWIPT) for Internet of Things (IoT) devices in which a sensor node monitors the received power and adaptively controls the single-tone or multitone
Hamed Abbasizadeh   +9 more
doaj   +1 more source

Joint Tomlinson-Harashima precoding and optimum transmit power allocation for SC-FDMA [PDF]

open access: yes, 2010
Single-Carrier Frequency Division Multiple Access (SC-FDMA) has been selected as the uplink transmission scheme in the 3GPP Long Term Evolution standard.
Nix, AR, Noune, MB
core   +2 more sources

CLIPPING TECHNIQUES FOR PAPR REDUCTION IN FBMC/OQAM SYSTEM OVER DOUBLY-SELECTIVE CHANNELS

open access: yesJournal of Engineering and Sustainable Development, 2021
One of the major disadvantages of Filter Bank Multicarrier (FBMC) is high Peak-to-Average Power Ratio (PAPR) of transmitted signal. As a result, nonlinear power amplifier (PA) properties, considerable out-of-band and the in-band distortion types take ...
Noor Q. Lateef, Fadhil S. Hasan
doaj   +3 more sources

PAPR: Proximity Attention Point Rendering

open access: yes, 2023
Learning accurate and parsimonious point cloud representations of scene surfaces from scratch remains a challenge in 3D representation learning. Existing point-based methods often suffer from the vanishing gradient problem or require a large number of points to accurately model scene geometry and texture.
Zhang, Yanshu   +3 more
openaire   +2 more sources

PAPR Constrained Power Allocation for Iterative Frequency Domain Multiuser SIMO Detector [PDF]

open access: yes, 2014
Peak to average power ratio (PAPR) constrained power allocation in single carrier multiuser (MU) single-input multiple-output (SIMO) systems with iterative frequency domain (FD) soft cancelation (SC) minimum mean squared error (MMSE) equalization is ...
Karjalainen, Juha   +3 more
core   +2 more sources

REVIEW PAPER FOR GFDM: ADVANCEMENT AND PERFORMANCE ANALYSIS FOR 5G NETWORK

open access: yesMağallaẗ Al-kūfaẗ Al-handasiyyaẗ
Generalized frequency division multiplexing (GFDM) is one of the most promising candidate Multiple Access technologies for the 5G of wireless communication, as it shows great potential and benefits to help create a networked society for the next ...
Zahraa Q. Haban, Ahmed G. Waddy
doaj   +1 more source

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