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24 Results Found

  • Article
  • Open Access
13 Citations
3,435 Views
11 Pages

The Effect of Pre-Annealing on the Evolution of the Microstructure and Mechanical Behavior of Aluminum Processed by a Novel SPD Method

  • Alexander P. Zhilyaev,
  • Mario J. Torres,
  • Homero D. Cadena,
  • Sandra L. Rodriguez and ,
  • Jessica Calvo and
  • José-María Cabrera
  • + 1 author+ 0 author

21 May 2020

A novel continuous process of severe plastic deformation (SPD) named continuous close die forging (CCDF) is presented. The CCDF process combines all favorite advances of multidirectional forging and other SPD methods, and it can be easily scaled up f...

(This article belongs to the Special Issue Materials by Non-traditional Methods of Severe Plastic Deformation (Spd))
  • Article
  • Open Access
17 Citations
4,863 Views
11 Pages

A Multi-Carrier Waveform Design for 5G and beyond Communication Systems

  • Imran Baig,
  • Umer Farooq,
  • Najam Ul Hasan,
  • Manaf Zghaibeh and
  • Varun Jeoti

1 September 2020

The next generation communication network (NGCN) is expected to provide higher spectral efficiency, low latency, large throughput and massive machine-to-machine type communications. In this regard, the design of the multi-carrier waveform (MCW) is po...

(This article belongs to the Special Issue Applied Mathematics for 5th Generation (5G) and beyond Communication Systems)
  • Article
  • Open Access
5 Citations
2,797 Views
22 Pages

Orthogonal frequency division multiplexing (OFDM) inherits multi-carrier systems’ inevitable high peak-to-average power ratio (PAPR) problem. In this paper, a novel alternating companding technique is proposed to combat the harassment of high P...

(This article belongs to the Topic Electronic Communications, IOT and Big Data)
  • Article
  • Open Access
20 Citations
4,612 Views
22 Pages

13 January 2023

Orthogonal frequency division multiplexing (OFDM) has the characteristics of high spectrum efficiency and excellent anti-multipath interference ability. It is the most popular and mature technology currently in wireless communication. However, OFDM i...

(This article belongs to the Topic IOT, Communication and Engineering)
  • Article
  • Open Access
1,316 Views
22 Pages

Transitioning from WiFi 6 to WiFi 7: A Metrological Assessment of Human-Centric EMF Exposure and Multi-Link Operation (MLO) Dynamics

  • Andreea Maria Buda,
  • David Vatamanu,
  • Sergiu Iulian Andreica,
  • Calin Munteanu and
  • Simona Miclaus

17 April 2026

This paper presents a comprehensive experimental assessment of electromagnetic field (EMF) exposure dynamics during the transition from IEEE 802.11ax (Wi-Fi 6) to IEEE 802.11be (Wi-Fi 7). Using a human-centric experimental setup, we evaluate the impa...

(This article belongs to the Special Issue Antenna and Sensor Technologies for Environmental EMF Sensing)
  • Article
  • Open Access
10 Citations
11,354 Views
22 Pages

To gain a deeper understanding of the hotly contested topic of the non-thermal biological effects of microwaves, new metrics and methodologies need to be adopted. The direction proposed in the current work, which includes peak exposure analysis and n...

(This article belongs to the Section Information and Communication Technologies)
  • Article
  • Open Access
6 Citations
2,928 Views
13 Pages

12 December 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&nda...

(This article belongs to the Section Communications)
  • Article
  • Open Access
8 Citations
3,263 Views
17 Pages

Genome-Wide Identification and Expression Analysis of the YTH Domain-Containing RNA-Binding Protein Family in Cinnamomum camphora

  • Jingjing Zhang,
  • Sheng Yao,
  • Xiang Cheng,
  • Yulu Zhao and ,
  • Wenya Yu,
  • Xingyue Ren,
  • Kongshu Ji and
  • Qiong Yu
  • + 3 authors+ 0 author

N6-methyladenosine (m6A) is one of the most abundant chemical modifications on mRNA in eukaryotes. RNA-binding proteins containing the YT521-B (YTH) domain play crucial roles in post-transcriptional regulation of plant growth, development, and stress...

(This article belongs to the Section Molecular Plant Sciences)
  • Article
  • Open Access
3 Citations
3,429 Views
13 Pages

In direct current optical orthogonal frequency division multiplexing (DCO-OFDM) systems, the high peak-to-average power ratio (PAPR) has been a significant challenge. Recently, lexicographical symbol position permutation (LSPP) using random permutati...

(This article belongs to the Special Issue Advances in Radio, Visible Light Communications, and Fiber Optics)
  • Article
  • Open Access
17 Citations
5,490 Views
24 Pages

Real-Time Statistical Measurement of Wideband Signals Based on Software Defined Radio Technology

  • Mirela Șorecău,
  • Emil Șorecău,
  • Annamaria Sârbu and
  • Paul Bechet

The increase in channel bandwidth and peak-to-average power ratio (PAPR) of modern communication standards poses a serious challenge to performing channel power (CP) and complementary cumulative distribution function (CCDF) measurements in real-time...

(This article belongs to the Special Issue New Trends and Methods in Communication Systems)
  • Article
  • Open Access
15 Citations
5,889 Views
9 Pages

5G UFMC Scheme Performance with Different Numerologies

  • Lambros Sakkas,
  • Eleftherios Stergiou,
  • Georgios Tsoumanis and
  • Constantinos T. Angelis

10 August 2021

5G is the latest mobile communications standard that is spreading fast across the world. Recently defined requirements for 5G systems have led to higher applications’ requirements regarding data rates, lower requirements for latency, and higher effic...

(This article belongs to the Special Issue Enabling-5G)
  • Article
  • Open Access
6 Citations
2,385 Views
21 Pages

Hybrid-Domain Evaluation PTS with Adaptive Selection Methods for PAPR Reduction

  • Feng Hu,
  • Yuan Lu,
  • Libiao Jin,
  • Jianbo Liu and ,
  • Zhiping Xia,
  • Guoting Zhang and
  • Jingting Xiao
  • + 2 authors+ 0 author

8 April 2022

The partial transmit sequence (PTS) technique is a fairly suitable scheme to mitigate the high peak-to-average power ratio (PAPR) problem inherent in 5G multicarrier systems, especially considering a high-order QAM modulation design. However, the hig...

(This article belongs to the Section A1: Smart Grids and Microgrids)
  • Article
  • Open Access
4 Citations
2,651 Views
21 Pages

8 April 2025

As a critical infrastructure, the transportation network impacts health, safety, comfort, and the economy, making it highly vulnerable to disruptions that significantly affect social and economic well-being. To maintain optimal service during such di...

(This article belongs to the Section Computing and Artificial Intelligence)
  • Article
  • Open Access
11 Citations
3,325 Views
24 Pages

26 May 2024

Aiming at the problems of incomplete dehazing, color distortion, and loss of detail and edge information encountered by existing algorithms when processing images of underground coal mines, an image dehazing algorithm for underground coal mines, name...

(This article belongs to the Special Issue Machine Learning and Deep Learning in Image/Video Processing and Sensing)
  • Article
  • Open Access
4 Citations
7,446 Views
19 Pages

A Crest Factor Reduction Technique for LTE Signals with Target Relaxation in Power Amplifier Linearization

  • José Ricardo Cárdenas-Valdez,
  • Jose Alejandro Galaviz-Aguilar,
  • Cesar Vargas-Rosales,
  • Everardo Inzunza-González and
  • Leonardo Flores-Hernández

4 February 2022

The signal conditioning treatment to achieve good relation of power with radio-frequency (RF) conversion in conventional transceiver systems require precise baseband models. A developed framework is built to provide a demonstration of the modeling fi...

(This article belongs to the Special Issue Transmission Techniques for Future Global Mobile Systems)
  • Article
  • Open Access
1 Citations
1,465 Views
37 Pages

Two-Stage Optimization-Learning Framework for Uncertainty-Aware Multi-Zonal Data Center Energy Management

  • Abubakar Rafique,
  • Xiaojun Yu,
  • Muhammad Jawad,
  • Qun Song and ,
  • Zhaohui Yuan,
  • Muhammad Tariq Sadiq,
  • Kamran Daniel and
  • Noman Shabbir
  • + 3 authors+ 0 author

1 April 2026

This paper proposes a hybrid optimization framework that synergizes mixed-integer linear programming (MILP) and reinforcement learning (RL) to minimize operational costs and carbon emissions in multi-zonal data centers integrated with renewable gener...

  • Article
  • Open Access
7 Citations
3,166 Views
19 Pages

17 April 2022

With the acceleration of urbanization, urban multi-energy systems (UMESs) generate more and more carbon emissions, causing severe environmental issues. The carbon generated by UMESs includes not only emissions from the consumption of fossil fuels for...

(This article belongs to the Special Issue Advances in Smart Grids and Microgrids)
  • Article
  • Open Access
1 Citations
1,541 Views
18 Pages

18 September 2025

This study presents a geostatistical simulation approach for fine-scale grain size mapping in tidal flats, which complements sparse field survey data with high-resolution optical satellite imagery and quantifies prediction uncertainty at unsampled lo...

(This article belongs to the Section Environmental Remote Sensing)
  • Article
  • Open Access
8 Citations
700 Views
22 Pages

28 February 2026

This paper presents a comprehensive analysis and simulation of a cost-effective optical Intensity-Modulation/Direct-Detection (IM/DD) Orthogonal Frequency Division Multiplexing (OFDM) system. Implemented via a MATLABR2024a and OptiSystem 23 co-simula...

  • Article
  • Open Access
6 Citations
3,413 Views
22 Pages

A Comparison of Surrogate Behavioral Models for Power Amplifier Linearization under High Sparse Data

  • Jose Alejandro Galaviz-Aguilar,
  • Cesar Vargas-Rosales,
  • José Ricardo Cárdenas-Valdez,
  • Daniel Santiago Aguila-Torres and
  • Leonardo Flores-Hernández

1 October 2022

A good approximation to power amplifier (PA) behavioral modeling requires precise baseband models to mitigate nonlinearities. Since digital predistortion (DPD) is used to provide the PA linearization, a framework is necessary to validate the modeling...

(This article belongs to the Special Issue Advances in Sparse Sensor Arrays)
  • Article
  • Open Access
329 Views
15 Pages

The high peak-to-average power ratio (PAPR) of orthogonal frequency division multiplexing (OFDM) signals poses a significant challenge for power-limited satellite transponders, leading to power amplifier nonlinearity and reduced system efficiency. Th...

(This article belongs to the Section Information Processes)
  • Article
  • Open Access
17 Citations
3,608 Views
23 Pages

7 March 2022

Nowadays, the demand for communication multi-carriers’ channels, where the sub-channels are made mutually independent by using orthogonal frequency division multiplexing (OFDM), is widespread both for wireless and wired communication systems. E...

  • Article
  • Open Access
8 Citations
3,231 Views
18 Pages

10 May 2024

The equatorial post-sunset ionospheric irregularities induce rapid fluctuations in the phase and amplitude of global navigation satellite system (GNSS) signals which may lead to the loss of lock and can potentially degrade the position accuracy. This...

(This article belongs to the Special Issue Remotely Sensed Data of Space Weather: New Observations, Approaches and Methods)
  • Article
  • Open Access
17 Citations
4,296 Views
19 Pages

A Model for the Relationship between Rainfall, GNSS-Derived Integrated Water Vapour, and CAPE in the Eastern Central Andes

  • Maryam Ramezani Ziarani,
  • Bodo Bookhagen,
  • Torsten Schmidt,
  • Jens Wickert and ,
  • Alejandro de la Torre,
  • Zhiguo Deng and
  • Andrea Calori
  • + 2 authors+ 0 author

21 September 2021

Atmospheric water vapour content is a key variable that controls the development of deep convective storms and rainfall extremes over the central Andes. Direct measurements of water vapour are challenging; however, recent developments in microwave pr...

(This article belongs to the Section Remote Sensing in Geology, Geomorphology and Hydrology)