Results 71 to 80 of about 256,030 (190)

Hybrid beamforming for single carrier mmWave MIMO systems

open access: yes, 2019
Hybrid analog and digital beamforming (HBF) has been recognized as an attractive technique offering a tradeoff between hardware implementation limitation and system performance for future broadband millimeter wave (mmWave) communications.
Cong, Jiaqi, Lin, Tian, Zhu, Yu
core   +1 more source

Harnessing machine learning for fiber-induced nonlinearity mitigation in long-haul coherent optical OFDM [PDF]

open access: yes, 2018
© 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).Coherent optical
Aldaya, Ivan   +5 more
core   +2 more sources

Piecewise-linear companding transform for peak-to-average power ratio reduction of OFDM signals

open access: yesTongxin xuebao, 2011
In order to reduce the peak-to-average power ratio(PAPR) of orthogonal frequency division multiplexing(OFDM) signals,a piecewise-linear companding transform was proposed.Small amplitudes were multiplied by a scale factor,while large ones were not only ...
YANG Pin-lu, HU Ai-qun
doaj   +2 more sources

Genetic Algorithm Based Bilayer PTS Scheme for Peak-to-Average Power Ratio Reduction of FBMC/OQAM Signal

open access: yesIEEE Access, 2020
Partial transmit sequence (PTS) scheme has been well applied to reduce the high peak-to-average power ratio (PAPR) of the orthogonal frequency division multiplexing (OFDM) signal.
Siying Lv   +3 more
doaj   +1 more source

The Noncoherent Rician Fading Channel -- Part II : Spectral Efficiency in the Low-Power Regime [PDF]

open access: yes, 2005
Transmission of information over a discrete-time memoryless Rician fading channel is considered where neither the receiver nor the transmitter knows the fading coefficients.
Gursoy, Mustafa Cenk   +2 more
core   +2 more sources

Peak-to-Average-Power-Ratio (PAPR) reduction in WiMAX and OFDM/A systems

open access: yesEURASIP Journal on Advances in Signal Processing, 2011
A peak to average power ratio (PAPR) reduction method is proposed that exploits the precoding or beamforming mode in WiMAX. The method is applicable to any OFDM/A systems that implements beamforming using dedicated pilots which use the same beamforming ...
Svantesson Thomas   +3 more
doaj  

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

Practical Guidelines for Approaching the Implementation of Neural Networks on FPGA for PAPR Reduction in Vehicular Networks

open access: yesSensors, 2018
Nowadays, the sensor community has become wireless, increasing their potential and applications. In particular, these emerging technologies are promising for vehicles’ communications (V2V) to dramatically reduce the number of fatal roadway ...
Abdelhamid Louliej   +3 more
doaj   +1 more source

Peak to Average Power Ratio Reduction and Bit Error Rate Improvement in Wireless Orthogonal Frequency Division Multiplexing Communication Systems [PDF]

open access: yes, 2009
Orthogonal frequency division multiplexing (OFDM) offers high data rate transmission with high spectral efficiency, immunity to multipath fading, and simple implementation using fast Fourier transform (FFT).
Al-Azzo, Wisam Fahmi
core  

Crest Factor Reduction in MC-CDMA Employing Carrier Interferometry Codes

open access: yesEURASIP Journal on Wireless Communications and Networking, 2004
This paper addresses signal compactness issues in MC-CDMA employing carrier interferometry codes using the measure of crest factor (CF). Carrier interferometry codes, applied to -carrier MC-CDMA systems, enable users to simultaneously share the system ...
Nassar Carl R, Natarajan Balasubramaniam
doaj   +2 more sources

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