Results 81 to 90 of about 2,410 (185)
Discrete Dynamics in Nature and Society, 2016 To solve the problem of the high peak-to-average power ratio (PAPR) in Orthogonal Frequency Division Multiplexing (OFDM) for the underwater acoustic communication system, the paper offers a method of reducing PAPR which combines the amplitude limiting ...
Jinqiu Wu, Gang Qiao, Xiaofei Qi
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A Joint Linearization/Companding Approach for Improving a CO-OFDM Transmitter
, 2015 International audience—The joint use of peak-to-average power ratio (PAPR) reduction and linearization via digital predistortion is investigated in this letter, with the view to improve the performances of coherent optical OFDM (CO-OFDM) systems ...
Azou, Stéphane +6 more
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Joint PAPR Reduction Technology Enabled by Neural Network-based Coding and Companding
Guangtongxin yanjiu, 2023 Multi-carrier modulation technology is an advanced modulation method commonly used in broadband communication systems. However, multi-carrier signals will produce a very large Peak to Average Power Ratio (PAPR) in the time domain, which will lead to non ...
Nie Jun-yuan, Zhang Da-wei, Zhang Jing
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ICT Express, 2019 Due to large peak-to-average power ratio (PAPR) at the time domain OFDM signal, various peak signal reduction methods for OFDM systems have been proposed.
Satoshi Taroda +4 more
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Measurement: SensorsIn order to advance 5G wireless communication technology, this paper presents a novel method for lowering the Peak-to-Average Power Ratio (PAPR) in Multiple-Input Multiple-Output Orthogonal Frequency-Division Multiplexing (MIMO-OFDM) systems.
D. Ramadevi, P. Trinatha Rao
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Multilevel Delta Modulation with Switched First-Order Prediction for Wideband Speech Coding
Elektronika ir Elektrotechnika, 2018 In this paper a delta modulation speech coding scheme based on the ITU-T G.711 standard and the switched first-order predictor is presented. The forward adaptive scheme is used, where the adaptation to the signal variance is performed on frame-by-frame ...
Zoran Peric +2 more
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Log-Domain Current-mode Quadrature Sinusoidal Oscillator [PDF]
, 2011 A log-domain current-mode quadrature sinusoidal oscillator based on lossless integrators is presented. The circuit is a direct realization of a first-order differential equation for obtaining the lossy and lossless integrators.
Prapakorn, Nattawit +2 more
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PAPR REDUCTION IN ACO-OFDM FOR VISIBLE LIGHT COMMUNICATION SYSTEM [PDF]
Journal of Engineering Science and Technology, 2018 Visible Light Communication (VLC) is gaining popularity in optical wireless. In conventional OFDM, bi-polar signals having both positive and negative values are considered.
MOHIT SRIVASTAVA +3 more
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Delta-modulation for the transmission of image data Final report [PDF]
Delta modulation for image data ...
Ehrman, L., Gish, H.
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