Results 91 to 100 of about 23,872 (186)
Canadian journal of respiratory therapy : CJRT = Revue canadienne de la therapie respiratoire : RCTR, 2014 The present outbreak of Ebola has health care professionals seeking guidance on isolation precautions for routine care and aerosol-generating procedures (AGPs). The most recent guidelines state that during AGPs, health care professionals should wear respiratory protection at least as protective as a National Institute for Occupational Safety and Health-
openaire +2 more sources
A Novel PAPR Reduction Scheme Based on Deep Autoencoder Network for FBMC Systems
IEEE AccessFilter bank multicarrier (FBMC) is a crucial complementary waveform to orthogonal frequency-division multiplexing (OFDM) in future communication systems.
Xing Cheng +4 more
doaj +1 more source
Perbandingan PAPR Metode CSLM dan SSLM pada Pengirim OFDM
Jurnal Nasional Teknik Elektro dan Teknologi Informasi, 2019 OFDM has multiple weaknesses, one of which is a high Peak to Power Average (PAPR). The maximum power value of the OFDM signal will be much greater than the average power, so the efficiency of the amplifier will be reduced.
Rana Nuriadnyana +2 more
doaj +1 more source
APR Reduction Technique based on OFDM Pilot Filter Bank Limiting for Satellite Mobile Communications
MATEC Web of Conferences, 2018 Combined with OFDM (Orthogonal Frequency Division Multiplexing), satellite mobile communications will effectively achieve on-demand communication in areas with an ultra-low density of users.
Dai Tianfang
doaj +1 more source
BJOG: An International Journal of Obstetrics &Gynaecology, Volume 132, Issue 5, Page 674-675, April 2025.
Sophie Alexandra Relph +2 more
wiley +1 more source
The PAPR and Simple PAPR Reduction of the 2D Spreading Based Communication Systems
Radioengineering, 2010 This paper deals with Peak to Average Power Ra- tio (PAPR) characteristics and the theory of variable spread- ing factor orthogonal frequency and code division multiplex- ing (VSF-OFCDM) systems. Comparison and evaluation of PAPR of VSF-OFCDM systems with various 2D spreading factors (SF) are done in time and in frequency domain.
Blumenstein, Jiri, Fedra, Zbynek
openaire +2 more sources
PAPR analysis for OFDM visible light communication
Optics Express, 2016 Orthogonal frequency-division multiplexing (OFDM) is a practical technology in visible light communication (VLC) for high-speed transmissions. However, one of its operational limitations is the peak-to-average power ratio (PAPR) of the transmitted signal.
Jiaheng, Wang +5 more
openaire +2 more sources
Fractional Fourier Domain PAPR Reduction
High peak-to-average power ratio (PAPR) has long posed a challenge for multi-carrier systems, impacting amplifier efficiency and overall system performance. This paper introduces dynamic angle fractional Fourier division multiplexing (DA-FrFDM), an innovative multi-carrier system that effectively reduces PAPR for both QAM and Gaussian signals with ...
Cao, Yewen +2 more
openaire +2 more sources
PAPR Reduction of OTSM with Random and Orthogonal SLM Phase Sequences and its Recovery in the Presence of EPA, EVA and ETU Channel Models [PDF]
RadioengineeringTo overcome the high peak-to-average-power ratio (PAPR) in orthogonal time sequency multiplexing (OTSM), this document proposes orthogonal and random selective mapping phase vectors (OSLM and RSLM) after some modifications to be applicable with OTSM ...
M. I. Al-Rayif
doaj