Results 21 to 30 of about 300 (138)

PSO Algorithm on PAPR Reduction Performance of Asymmetrically Clipped Optical‐OFDM

Applied Computational Intelligence and Soft Computing, Volume 2026, Issue 1, 2026.
This research presents a novel hybrid optimization framework combining artificial neural networks (ANN) and particle swarm optimization (PSO) to mitigate the high peak‐to‐average power ratio (PAPR) in asymmetrically clipped optical‐orthogonal frequency division multiplexing (ACO‐OFDM) systems. While conventional PTS effectively reduces PAPR, it suffers
Hermansyah Alam, Anuar Mat Safar, Norizan Mohamed Nawawi, Mohd Nordin Junita, Aymen Abdalmunam Hameed, Ridha Ejbali   +5 more
wiley   +1 more source

Asymptotic series expansion for the probability density function of the interference due to Faster-Than-Nyquist signaling

Engineering Science and Technology, an International Journal, 2017
A follow-up on a recent analytical investigation into the statistical characteristics of the Intersymbol Interference (ISI) due to Faster-Than-Nyquist (FTN) signaling is presented.
Zouhir Bahri
doaj   +1 more source

Pilot‐Based Iterative Path Estimation and Maximum Ratio Combining (MRC)–Based Signal Detection of Orthogonal Time–Frequency Space (OTFS) Modulation for 6G in Fractional Doppler Channels

Journal of Computer Networks and Communications, Volume 2026, Issue 1, 2026.
The sixth generation (6G) wireless networks are used to provide a large coverage, and also this generation needed to support different emerging applications in harsh areas with higher user equipment mobility. For the above case, a new modulation technique called orthogonal time–frequency space (OTFS) modulation has emerged as a promising technique to ...
Ephrem Gelamite Demere, Zelalem Hailu Gebeyehu, Sohini Basu Roy   +2 more
wiley   +1 more source

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

A Design of NLOS Communication Scheme Based on SC-FDE with Cyclic Suffix for UAV Payload Communication

Drones
Non-line-of-sight (NLOS) communication with severe loss always leads to performance degradation in unmanned aerial vehicle (UAV) payload communication. In this paper, a UAV NLOS communication scheme based on single-carrier frequency domain equalization ...
Peng Wang, Xin Xiang, Rui Wang, Pengyu Dong, Qiao Li   +4 more
doaj   +1 more source

Low-Complexity Gaussian Detection for MIMO Systems

Journal of Electrical and Computer Engineering, 2010
For single-carrier transmission over delay-spread multi-input multi-output (MIMO) channels, the computational complexity of the receiver is often considered as a bottleneck with respect to (w.r.t.) practical implementations.
Tianbin Wo, Peter Adam Hoeher
doaj   +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

A New Family of Nyquist Pulses With Improved Performance

IEEE Access, 2023
In this work, we introduce and evaluate the performance of a novel family of Nyquist (intersymbol interference free) pulses that outperform several existing ones available in the open technical literature.
Kyriakos D. Gazouleas, Nikos C. Sagias, Michael C. Batistatos, Kostas P. Peppas   +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

Subband Array Implementations for Space-Time Adaptive Processing

EURASIP Journal on Advances in Signal Processing, 2005
Intersymbol interference (ISI) and cochannel interference (CCI) are two primary sources of signal impairment in mobile communications. In order to suppress both ISI and CCI, space-time adaptive processing (STAP) has been shown to be effective in ...
Yang Kehu, Zhang Yimin, Amin Moeness G
doaj   +1 more source