Results 51 to 60 of about 87,969,916 (159)
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 +3 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
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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 +2 more
wiley +1 more source
Increasing the power efficiency of an IEEE802.11a power amplifier [PDF]
, 2005 OFDM modulation is extensively used in many applications. However, it also exhibits high peak-to-average power ratios (PAPR) requiring the associated transmit amplifier to have a very large linear region.
Chen, K, Morris, KA, Beach, MA
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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
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Two-stage collaborative information interaction reliability improvement for the distribution grid
Frontiers in Energy ResearchThe 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
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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 +2 more
doaj +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 +3 more
wiley +1 more source
Fast peak-power reduction for MIMO-OFDM systems with diversity [PDF]
, 2009 A robust peak-power reduction technique called active constellation extension (ACE) reduces the peak-to-average power ratio (PAPR) of single-input single-output (SISO) orthogonal frequency-division modulated (OFDM) signals by extending the outer ...
Tsiligkaridis, Theodoros
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DE BRUIJN SEQUENCE BASED PEAK POWER CONTROL AND INTERFERENCE MITIGATION IN MC-CDMA SYSTEM [PDF]
Journal of Engineering Science and Technology, 2015 In Multicarrier Code Division Multiple Access (MC-CDMA) system, the performance can get degraded due to a high Peak to Average Power Ratio (PAPR) which is equivalent to Peak to Mean Envelope Power Ratio (PMEPR) and Multi Access Interference (MAI).
NOOR MOHAMMED V +5 more
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