Results 41 to 50 of about 550 (173)

Performance Evaluation of OTFS and OFDM in Rayleigh Fading Channel

Journal of Engineering, Volume 2026, Issue 1, 2026.
Orthogonal time–frequency space (OTFS) modulation is a crucial technology for addressing the challenges of 5G and 6G networks. OTFS was developed to address the problems of signal weakness and quality loss in mobile environments, such as those experienced by a user in a fast‐moving car or train; this is achieved by reducing intercarrier interference ...
Marwa Y. Abdulla, Azhar W. Talab, Razan Abdulhammed, A. S. Madhukumar   +3 more
wiley   +1 more source

Genetic Algorithm‐Optimized Recurrent Neural Network for Channel Estimation in RIS‐Aided MIMO System With Rake Receiver

Journal of Electrical and Computer Engineering, Volume 2026, Issue 1, 2026.
The integration of reconfigurable intelligent surfaces (RIS) into multiple‐input multiple‐output (MIMO) systems offers transformative potential for enhancing spectral efficiency and mitigating channel impairments. However, efficient and accurate channel estimation (CE) remains a critical challenge due to multipath propagation, high dimensionality, and ...
Kevin M. Mwongera, Philip K. Langat, Franklin M. Manene, Pramita Mishra   +3 more
wiley   +1 more source

Hexagonal Multicarrier Faster-Than-Nyquist Signaling

IEEE Access, 2017
Multicarrier faster-than-Nyquist (MFTN) signaling is a spectral efficient modulation scheme for future communication systems. In MFTN signaling, the intersymbol interference (ISI) and intercarrier interference (ICI) are introduced intentionally by the ...
Siming Peng, Aijun Liu, Xiaofei Pan, Heng Wang   +3 more
doaj   +1 more source

Comparing GFDM With OFDM for Use in 6G Communication From a New Perspective

Journal of Electrical and Computer Engineering, Volume 2026, Issue 1, 2026.
The most important challenges facing 6G communication systems are the large amount of data and low latency as compared to previous generations. Therefore, it has become necessary to use advanced technologies to meet the requirements of 6G wireless communication systems.
Mohammed Azher Therib, Saad Saffah Hreshee, Martin Haardt   +2 more
wiley   +1 more source

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

Infrared Colloidal Quantum Dot Lasers

Advanced Optical Materials, Volume 13, Issue 24, August 25, 2025.
Infrared colloidal quantum dot (CQD) lasers represent an emerging platform for a wide range of infrared applications including free‐space optical telecommunications, LIDAR, biomedical diagnostics, and on‐chip photonics. CQDs offer spectral tunability, and low‐cost solution‐processed fabrication, enabling seamless integration into next‐generation ...
Nima Taghipour, Gerasimos Konstantatos
wiley   +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

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

Throughput Analysis of Wavelet OFDM in Broadband Power Line Communications

IEEE Access, 2018
Windowed orthogonal frequency-division multiplexing (OFDM) and wavelet OFDM have been proposed as multicarrier techniques for broadband communications over the power line network by the standard IEEE 1901.
Freddy A. Pinto-Benel, Manuel Blanco-Velasco, Fernando Cruz-Roldan   +2 more
doaj   +1 more source

A Hybrid Single-Carrier/Multicarrier Transmission Scheme with Power Allocation

EURASIP Journal on Wireless Communications and Networking, 2007
We propose a flexible transmission scheme which easily allows to switch between cyclic-prefixed single-carrier (CP-SC) and cyclic-prefixed multicarrier (CP-MC) transmissions. This scheme takes advantage of the best characteristic of each scheme, namely,
Luc Féty, Michel Terré, Danilo Zanatta Filho   +2 more
doaj   +1 more source