Results 51 to 60 of about 11,208 (180)

An Overview of Current Optimization Approaches for Hybrid Energy Systems Combining Solar Photovoltaic and Wind Technologies

Energy Science &Engineering, Volume 13, Issue 9, Page 4633-4655, September 2025.
ABSTRACT This study reviews recent developments in optimization techniques for hybrid solar photovoltaic and wind energy systems, particularly those using artificial intelligence (AI) and hybrid algorithms. Due to the global need for sustainable energy, the study compares both traditional and modern optimization techniques.
Ibrahim Seidu, Sani Salisu, Abdullahi Abubakar Mas'ud, Umar Musa, Adamu Halilu Jabire, Firdaus Muhammad‐Sukki, Ibrahim Abubakar Mas'ud   +6 more
wiley   +1 more source

Emerging Opportunities of Colloidal Quantum Dots for Photocatalytic Organic Transformations

Advanced Materials, Volume 37, Issue 23, June 12, 2025.
Colloidal quantum dots (QDs) have gained significant attention as photocatalysts in organic transformations in recent years. This review highlights QDs’ distinctive features, including the quantum size effect, compositional and structural diversity, tunable surface chemistry, and photophysics.
Qinxuan Cao, Jianning Feng, Kin Ting Chang, Wenfei Liang, Haipeng Lu   +4 more
wiley   +1 more source

Bit and Power Allocation in Constrained Multicarrier Systems: The Single-User Case

EURASIP Journal on Advances in Signal Processing, 2007
Multicarrier modulation is a powerful transmission technique that provides improved performance in various communication fields. A fundamental topic of multicarrier communication systems is the bit and power loading, which is addressed in this article as
Theodore Antonakopoulos, Nikolaos Papandreou   +1 more
doaj   +1 more source

Optimal economic and low‐carbon scheduling in integrated energy system considering multi‐level thermal energy coupling and integrated demand response

Energy Conversion and Economics, Volume 6, Issue 2, Page 83-100, April 2025.
Abstract In integrated energy systems (IESs), thermal energies with different characteristics and efficiencies are typically regarded as having the same thermal energy level, which leads to unreasonable assumptions regarding the thermal energy structure of the system.
Yanjun Jing, Mingming Liang, Haixin Wang, Zihao Yang, Gen Li, Fausto Pedro García Márquez, Junyou Yang, Zhe Chen   +7 more
wiley   +1 more source

Chirp-based multicarrier modulation [PDF]

, 2012
In this paper we demonstrate that in doubly-dispersive environments, a multicarrier (MC) system based on a fractional Fourier transform (FrFT) can achieve a better concentration of power near the main diagonal of the equivalent channel matrix compared to
Solyman, Ahmed, Soraghan, John, Weiss, Stephan   +2 more
core  

Resource Allocation for Outdoor-to-Indoor Multicarrier Transmission with Shared UE-side Distributed Antenna Systems

, 2015
In this paper, we study the resource allocation algorithm design for downlink multicarrier transmission with a shared user equipment (UE)-side distributed antenna system (SUDAS) which utilizes both licensed and unlicensed frequency bands for improving ...
Breiling, Marco, Burkhardt, Frank, Ng, Derrick Wing Kwan, Rohde, Christian, Schober, Robert   +4 more
core   +1 more source

A Network Modeling Systematics for Transition Paths Toward Climate Neutral Gas Networks—NeMoSys ['nεmɒsis] –

Energy Technology, Volume 13, Issue 2, February 2025.
This article discusses challenges in modeling complex energy systems, focusing on the importance of high spatial and temporal resolution. It proposes a systematic framework for gas network modeling, addressing dimensions, influencing factors, data requirements, development steps, and assessment criteria.
Joachim Müller‐Kirchenbauer, Mario Ragwitz, Tanja Kneiske, Bernhard Klaassen, Tim Mielich, Ulrike Herrmann   +5 more
wiley   +1 more source

Development of a field‐programmable gate array‐based real‐time generic solver for power electronics circuits with arbitrary configurations

High Voltage, Volume 10, Issue 1, Page 47-55, February 2025.
Abstract Using a field‐programmable gate array (FPGA) as the core computational engine, this paper proposes a digital real‐time electromagnetic transient simulator for a generic power electronic system. The LC switching model is employed for constant network conductance representation. The fully paralleled and pipelined design for network solutions and
Yuan Chen, Jiadai Liu, Hui Ding, Yi Zhang   +3 more
wiley   +1 more source

Filtered Multicarrier Transmission

, 2020
Orthogonal frequency‐division multiplexing (OFDM) has been adopted as the waveform of choice in the existing and emerging broadband wireless communication systems for a number of advantages it can offer. Nevertheless, investigations of more advanced multicarrier transmission schemes have continued with the aim of eliminating or mitigating its essential
Yli-Kaakinen, Juha, Renfors, Markku, Kofidis, Eleftherios   +2 more
openaire   +2 more sources

Research on automatic modulation recognition of shortwave signals in few‐shot scenarios based on knowledge distillation

IET Communications, Volume 19, Issue 1, January/December 2025.
A multi‐information fusion method is proposed for few‐shot modulation recognition, which involves converting I/Q signals into A/P signals and training with a combination of VGG and LSTM network models. An ensemble knowledge distillation approach is employed to streamline the network model, meeting the demands for deploying neural network models on ...
Qi Yao, Jingjing Yang, Ming Huang
wiley   +1 more source