Results 61 to 70 of about 88,007,393 (199)
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
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
core
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 +3 more
wiley +1 more source
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
A modified tone injection scheme for PAPR reduction using genetic algorithm
ICT Express, 2015 Owing to the capability to provide a wide variety of intelligent behaviors, cognitive radio (CR) has become a promising technology to improve spectrum utilization efficiently.
Won Cheol Lee +2 more
doaj +1 more source
Enhanced Sub-Block Partitioning and Effective Post-Processing for the PTS Algorithm
Tikrit Journal of Engineering SciencesThe transmitted OFDM is a multicarrier modulation technique for efficient and reliable data communication. This technique forces a major problem during the signal transmission process, which is a high peak-to-average power ratio (PAPR), leading to ...
Omar Khaldoon Abdulrahman +2 more
doaj +1 more source
IEEE AccessOne of the primary drawbacks of orthogonal frequency division multiplexing (OFDM) systems is that the peak-to-average power ratio (PAPR) increase as the number of subcarriers increases.
Jing Wenhao, Jin Jie, Fei Yingying
doaj +1 more source
Peak-to-average power ratio reduction of FDRM
, 2006 Frequency Domain Reciprocal Modulation (FDRM), originally developed by T. D. Williams [1, 2], is an enhanced method of modulation to complement Orthogonal Frequency Division Multiplexing (OFDM) techniques.
McMeekin, Scott +2 more
core +1 more source
Adaptive PTS approach for reduction of peak-to-average power ratio of OFDM signal [PDF]
, 2000 An adaptive partial transmit sequence (PTS) technique is presented for the reduction of the peak-to-average power ratio (PAP) of an orthogonal frequency division multiplexing (OFDM) signal.
Jayalath, Dhammika, Tellambura, Chintha
core
Effect of gear ratio on peak power and time to peak power in BMX cyclists. [PDF]
, 2016 The aim of this study was to ascertain if gear ratio selection would have an effect on peak power and time to peak power production in elite Bicycle Motocross (BMX) cyclists. Eight male elite BMX riders volunteered for the study.
Roberts, Simon J. +7 more
core +1 more source