Results 41 to 50 of about 1,061 (180)

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

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

Impact of reformed RM Encoded data on PAPR of Multicode CDMA under MSK

Sir Syed University Research Journal of Engineering and Technology, 2016
In this research work, the effect of Reformed Reed Muller Encoded Data (RRMED) on Peak to Average Power Ratio (PAPR) of Multicode Code Division Multiple Access (MC-CDMA) systems was studied under Minimum Shift Keying (MSK) modulation. Simulation studies
S. Rizwan-ul- Hasan, Najeeb Siddiqui, Shakil Ahmed   +2 more
doaj  

Next‐Generation SIMO SC‐FDMA–DMWT Systems With Adaptive EGC: Performance Enhancement in Correlated LTE‐Advanced Channels

Journal of Control Science and Engineering, Volume 2026, Issue 1, 2026.
Given the explosive increase in mobile data traffic, the wireless communication system of today and beyond has to be able to offer both high spectral efficiency and energy efficiency (EE) under challenging propagation environments such as deep indoor, high‐speed mobility, or tunneling. This work presents an improved structure of doing SIMO SC‐FDMA–DMWT
Mohammed Aboud Kadhim, Zahraa Ibrahim Sabere, Ahmed A. Thabit, Deepali   +3 more
wiley   +1 more source

A Comprehensive Review of Battery‐Free Energy Efficient RF and Microwave Systems

Journal of Engineering, Volume 2026, Issue 1, 2026.
Battery‐free radiofrequency (RF) and microwave systems have emerged as a promising solution for enabling long‐lifetime, maintenance‐free wireless sensing and communication platforms by eliminating conventional battery dependence. These systems operate by harvesting ambient or dedicated electromagnetic energy, converting it to usable electrical power ...
Stella N. Arinze, Augustine O. Nwajana, Vijayanandh Raja   +2 more
wiley   +1 more source

Optimization of Tone Reservation-Based PAPR Reduction for OFDM Systems [PDF]

Radioengineering, 2017
A major drawback of orthogonal frequency division multiplexing (OFDM) is its high peak-to-average power ratio (PAPR). Tone reservation (TR) is one of the numerous methods for reducing the PAPR.
B. Horvath, B. Botlik
doaj  

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

Performance Evaluation of Code Division Multiple Access (CDMA) in terms of Power Measurement and Reduction

Sir Syed University Research Journal of Engineering and Technology, 2011
 In this research paper the performance of the CDMA system has been analyzed with respect to PAPR (Peak to Average Power Ratio) measurement and its reduction.
Syed Rizwan-ul- Hasan, Shakil Ahmed
doaj  

Two-stage collaborative information interaction reliability improvement for the distribution grid

Frontiers in Energy Research
The impulse noise generated by a large volume of power electronics devices imposes a hazardous impact on information interaction reliability in low-voltage distribution grids.
Zhan Shi
doaj   +1 more source

An optimization technique for simultaneous reduction of PAPR and out‐of‐band power in NC‐OFDM‐based cognitive radio systems

ETRI Journal, 2020
Noncontiguous orthogonal frequency division multiplexing (NC‐OFDM)‐based cognitive radio (CR) systems achieve highly efficient spectrum utilization by transmitting unlicensed users' data on subcarriers of licensed users’ data when they are free. However,
Sravan Kumar Kaliki, Shiva Prasad Golla, Rama Naidu Kurukundu   +2 more
doaj   +1 more source