Results 91 to 100 of about 9,472 (221)
PEAK TO AVERAGE POWER RATIO (PAPR) REDUCTION IN OFDM BASED RADIO SYSTEMS
, 2010 High data rate wireless access is demanded by many applications. Usually, more bandwidth is required for higher data rate transmission in any of the system. With promising technology and ever-increasing wireless devices, the spectrum is becoming scarcer day by day.
Parvez, Mohammad Zavid +1 more
openaire +1 more source
New SLM scheme to reduce the PAPR of OFDM signals using a genetic algorithm
ICT Express, 2016 Selected mapping (SLM) is a popular peak-to-average power ratio (PAPR) reduction technique suitable for use in orthogonal frequency division multiplexing (OFDM) systems as it achieves good PAPR reduction performance without signal distortion.
Insoo Sohn
doaj +1 more source
Al-Khawarizmi Engineering Journal, 2008 One of the serious problems in any wireless communication system using multi carrier modulation technique like Orthogonal Frequency Division Multiplexing (OFDM) is its Peak to Average Power Ratio (PAPR).It limits the transmission power due to the ...
Ahmed K. Hassan
doaj
A PAPR Reduction Method With EVM Constraints for OFDM Systems
IEEE Access, 2019 In orthogonal frequency division multiplexing (OFDM) systems, high peak to average power ratio (PAPR) is one of its core issues. The OFDM signal with high PAPR passes high-power amplifier (HPA) will result in severely nonlinear distortions, which not ...
Yajun Wang, Mengmeng Wang, Zhibin Xie
doaj +1 more source
Al-Khawarizmi Engineering Journal, 2019 One of the serious problems in any wireless communication system using multi carrier modulation technique like Orthogonal Frequency Division Multiplexing (OFDM) is its Peak to Average Power Ratio (PAPR).It limits the transmission power due to the ...
Ahmed K. Hassan
doaj
A mathematical PAPR estimation of OTFS network using a machine learning SVM algorithm
Results in OpticsThe article presents a Support Vector Machine (SVM) algorithm to lower the peak-to-average power ratio (PAPR) in networks that work in orthogonal time frequency space (OTFS). High PAPR makes power amplifiers less efficient and lowers signal quality. This
Arun Kumar +2 more
doaj +1 more source
TRELLIS CODED MAPPING FOR PEAK TO AVERAGE POWER REDUCTION IN SFBC MIMO OFDM SYSTEMS
ICTACT Journal on Communication Technology, 2016 Space frequency block code orthogonal frequency division multiplexing (SFBC-OFDM) systems has inherit drawbacks of high peak-to average power ratio (PAPR) signals, and constellation shaping with trellis is a promising approach for reducing both peak ...
P. N. Kota, A. N. Gaikwad, B. P. Patil
doaj
Research on reducing PAPR of QAM-OFDM radar-communication integration sharing signal
The Journal of Engineering, 2019 In order to solve the problem of high peak-to-average power ratio (PAPR) of the sharing signal for radar-communication integration based on quadrature amplitude modulation-orthogonal frequency division multiplexing modulation, according to the ...
Yongjun Yang +4 more
doaj +1 more source
A NEW DISCRETE HARTLEY TRANSFORM PRECODING BASED INTERLEAVED-OFDMA UPLINK SYSTEM WITH REDUCED PAPR FOR 4G CELLULAR NETWORKS [PDF]
, 2011 High peak-to-average power ratio (PAPR) reduction is one of the major challenges in orthogonal frequency division multiple access (OFDMA) systems since last decades. High PAPR increases the complexity of analogue-to-digital (A/D) and digital-to-analogue (
IMRAN BAIG, VARUN JEOTI
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Multicarrier-signal design with low peaks and low out-of-band power [PDF]
, 2009 Projecte fet en col.laboració amb el Department of Electrical and Information Technology. Lund UniversityThe high peak-to-average power ratio (PAPR) and the high out-of-band power (OBP) are two major drawbacks of multicarrier communication systems. Many
Vázquez Oliver, Miguel Ángel
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