Results 1 to 10 of about 8,203 (170)

A quantitative risk assessment methodology based on CCDF risk curve for accidental releases from fusion reactors

Nuclear Materials and Energy, 2020
Fusion reactors are expected to be more safe and environmentally friendly in the development of nuclear energy systems. It is vital to fully understand the overall radiation risk level of fusion reactors in comparison with existing nuclear energy systems.
Zhen Wang, Shanqi Chen, Daochuan Ge, Chao Chen, Zhibin Chen   +4 more
doaj   +2 more sources

Low complexity hybrid algorithm for improving PAPR BER and PSD in OTFS under diverse channel conditions [PDF]

Scientific Reports
In this study, the Peak-to-Average Power Ratio (PAPR) and Bit Error Rate (BER) performance in Orthogonal Time Frequency Space (OTFS) modulation with Non-Orthogonal Multiple Access (NOMA) over Rayleigh fading channels were investigated.
Arun Kumar, Aziz Nanthaamornphong, Nishant Gaur, Mehedi Masud   +3 more
doaj   +2 more sources

Uncertainty and Sensitivity Analysis of Solute Contaminant Transport Simulation in Groundwater (Case Study: Qazvin Plain) [PDF]

آب و فاضلاب, 2021
Groundwater contaminant transport modeling is a useful tool for identifying how pollutants fate and transport in porous aquifer environments. These models include several parameters, which are often estimated based on personal judgment or in the best ...
Nahid Sadat Jafari, Saeed Alimohammadi
doaj   +1 more source

Modeling and Parameter Estimation of Radar Sea-Clutter with Trimodal Gamma Population

Journal of Telecommunications and Information Technology, 2022
Real radar data often consist of a mixture of Gaussian and non-Gaussian clutter. Such a situation creates one or more inflexion points in the curve of the empirical cumulative distributed function (CDF).
Zak´ıa Terki, Amar Mezache, Fouad Chebbara   +2 more
doaj   +1 more source

Design of a Test for Detecting the Presence of Impulsive Noise

Sensors, 2020
This paper proposes a new test method of detecting the presence of impulsive noise based on a complementary cumulative density function (CCDF). Impulsive noise severely degrades performance of communication systems and the conventional Kolmogorov–Smirnov
Hyungkook Oh, Dongho Seo, Haewoon Nam
doaj   +1 more source

CCDF and Monte Carlo Analysis of a Digital Polar Transmitter for Ultra-Wideband System [PDF]

2007 IEEE 18th International Symposium on Personal, Indoor and Mobile Radio Communications, 2007
Polar modulation has been adopted by modern wireless systems due to its high power efficiency. In this paper, a novel behavioral model for a digital polar transmitter is presented. The polar transmitter contains an array of amplifiers, which are controlled digitally. A system level simulator is used to model each amplifier.
Seah, KH, Chia, MYW, Papavassiliou, C, Constantinides, GA   +3 more
openaire   +2 more sources

Impact of Antenna Correlation on a New Dual-Hop MIMO AF Relaying Model

EURASIP Journal on Wireless Communications and Networking, 2010
A novel system model is proposed for the dual-hop multiple-input multiple-output amplify-andforward relay networks, and the impact of antenna correlation on the performance is studied.
Gayan Amarasuriya, Chintha Tellambura, Masoud Ardakani   +2 more
doaj   +2 more sources

Efficiency analysis of distributed power combining for mobile platform

Tongxin xuebao, 2023
Aiming at the position perturbation of mobile platform, the impact of position perturbation was analyzed on distributed power combining efficiency.The model of distributed power combining with position perturbation was established, and the average far ...
Wenbo GUO, Jiaxin DU, Jian YANG, Mu YAN, Hongzhi ZHAO, Shihai SHAO   +5 more
doaj   +2 more sources

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

Engineering 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, Majid A. Alwan, Fadhil S. Hasan   +2 more
doaj   +1 more source

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

BMC 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, Heather J. Williamson, Travis A. Pinn, Sara Shuman, Bethany M. Robinson, Maribeth Evans, Crystal Luna   +6 more
doaj   +1 more source