Results 11 to 20 of about 8,316 (179)

Performance Evaluation of Dual Tree Complex Wavelet Packet Modulation (Dt-Cwpm) System Over Multipath Rayleigh Fading Channel [PDF]

open access: yesEngineering and Technology Journal, 2013
The effectiveness of Dual Tree Complex Wavelet Packet Modulation (DT-CWPM) with DQPSK modulation is investigated for communication over flat and frequency selective Rayleigh fading channel. The simulation results show that the performance of the proposed
Hikmat N. Abdullah   +2 more
doaj   +1 more source

Barriers and facilitators to attending and being physically active during recreation time among women incarcerated

open access: yesBMC Women's Health, 2022
Background Most women incarcerated in jail are not physically active and do not attend recreation time (rec-time), a time dedicated to being physically active, outside. The purpose of this study was to determine barriers and facilitators to attending and
Ricky Camplain   +6 more
doaj   +1 more source

Enhancement of pitting corrosion resistance for AA1050 processed by continuous closed die forging

open access: yesJournal of Materials Research and Technology, 2020
The pitting corrosion of an aluminum alloy AA1050 after being processed by continuous closed die forging (CCDF) was evaluated by cyclic potentiodynamic polarization (CPP).
Sandra L. Rodríguez R.   +6 more
doaj   +1 more source

Analytical bound for the CCDF of Crest Factor in NC-OFDM Systems

open access: yesJournal of Communications Software and Systems, 2017
Non-contiguous orthogonal frequency division multiplexing (NC-OFDM) is a promising framework for wireless communication systems due to OFDM characteristics like the spectral bandwidth efficiency, robustness to frequency selective fading channels, etc.
Mohammed Y. Bendimerad   +2 more
openaire   +4 more sources

Numerical simulation of cryogenic cyclic closed-die forging of Cu: hardness distribution, strain maps and microstructural stability

open access: yesJournal of Materials Research and Technology, 2019
Cyclic closed-die forging (CCDF) appears to be an easy to operate deformation process, which imposes high levels of strain, even on difficult-to-deform materials.
Danielle Cristina Camilo Magalhães   +5 more
doaj   +1 more source

Peak to average power ratio reduction in NC–OFDM systems [PDF]

open access: yes, 2015
Non contiguous orthogonal frequency division multiplexing (NC-OFDM) is an efficient and adaptable multicarrier modulation scheme to be used in cognitive radio communications.
Ghafoor, Abdul   +2 more
core   +1 more source

A joint OFDM PAPR reduction and data decoding scheme with no SI estimation [PDF]

open access: yes, 2016
The need for side information (SI) estimation poses a major challenge when selected mapping (SLM) is implemented to reduce peak-to-average power ratio (PAPR) in orthogonal frequency division multiplexing (OFDM) systems.
Adegbite, Saheed A.   +2 more
core   +2 more sources

Comparison of ITU-837 models performance in predicting Malaysias' rainfall rate and rain attenuation CCDF

open access: yes, 2022
this paper comparing the the performance of different ITU-837 in predicting malaysias' rain attenuation CCDF.
Aida Al-Samawi   +5 more
openaire   +2 more sources

New Results On the Sum of Two Generalized Gaussian Random Variables [PDF]

open access: yes, 2015
We propose in this paper a new method to compute the characteristic function (CF) of generalized Gaussian (GG) random variable in terms of the Fox H function. The CF of the sum of two independent GG random variables is then deduced. Based on this results,
Alouini, Mohamed-Slim, Soury, Hamza
core   +2 more sources

Peak shrinking and interpolating for PAPR reduction in M-IFoF-based mobile fronthaul

open access: yesDigital Communications and Networks, 2022
We apply a Peak Shrinking and Interpolating (PSI) scheme to improve the Peak-to-Average Power Ratio (PAPR) performance in Multiple Intermediate-Frequency-over-Fiber (M-IFoF) based mobile fronthaul.
Luping Qin, Haibo Li, Da Chen, Tao Jiang
doaj   +1 more source

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