Results 81 to 90 of about 3,698 (177)
Peak-to-Average Power Ratio of OTFS Modulation
, 2019 In this letter, we analyze the peak-to-average power ratio (PAPR) of orthogonal time frequency space modulation (OTFS) waveform. Towards this, we consider modulation symbols on an N x M delay-Doppler grid, where N and M are the number of Doppler and ...
Surabhi, G D +2 more
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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
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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
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, 2018 Orthogonal Frequency Division Multiplexing (OFDM) signal is considered a good candidate for wireless systems because it offers diversity gain in frequency selective channels.
Das, B. +3 more
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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
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A Practical Algorithm for Physical Layer Encryption Under Constant Envelope Constraint
IEEE AccessPhysical Layer Encryption (PLE) techniques have gained increasing attention recently as they ensure security without requiring heavy coordination or time-consuming secret key establishment.
Clement Leroy +3 more
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, 2014 — High Peak-to-average-power-ratio (PAPR) is a problem associated with OFDM systems. Various companding schemes are used to reduc e the problem of PAPR in orthogonal frequency division multiplexing schemes.
Garima Saini, Deepender Gill
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A method of peak to average power ration (PAPR)
, 2013 A method of peak to average power ratio (PAPR) reduction is provided, the method includes the steps of interleaving output of Inverse Fast Fourier Transform (IFFT) modulation and performing phase optimization, such that multiplication operations are ...
Al-Hussaini, Khalid Taher Mohammed +2 more
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PERFORMANCE IMPROVEMENT OF OFDM SYSTEM BY PEAK TO AVERAGE POWER REDUCTION THROUGH PULSE SHAPING TECHNIQUE [PDF]
ICTACT Journal on Communication Technology, 2010 OFDM is a form of multicarrier modulation technique with high spectral efficiency, robustness to channel fading, immunity to impulse interference, uniform average spectral density capacity of handling very strong echoes and non-linear distortion. Despite
Susmita Das +2 more
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Tongxin xuebao, 2023 To solve the problem of limited number of sequences in the mutually orthogonal complementary code set and high peak-to-average power ratio (PAPR) in MC-CDMA system, a construction of asymptotically optimal a periodic binary QCSS with low column vector ...
Yubo LI +3 more
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