Results 61 to 70 of about 2,477 (201)
Single-input Multiple-output Tunable Log-domain Current-mode Universal Filter [PDF]
, 2013 This paper describes the design of a current-mode single-input multiple-output (SIMO) universal filter based on the log-domain filtering concept.
Dejhan, K., Prommee, P.
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IEEE Access, 2017 Generally, the probability density function (PDF) of orthogonal frequency division multiplexing (OFDM) signal amplitudes follow the Rayleigh distribution, thus, it is difficult to correctly predict the existence of impulsive noise (IN) in powerline ...
Kelvin Anoh +4 more
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Companding with junction f.e.t.
Electronics Letters, 1970 As companding elements, field-effect transistors have advantages over p–n diodes; they have suitably shaped i/v characteristics which are controllable by gate bias. Tests show that a departure from linearity of compressor and expander in cascade can be corrected to have an error of less than 1%.
J.E. Flood, F. Morris
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Nonlinear companding transform for PAPR reduction in lattice-OFDM system
Tongxin xuebao, 2015 Since the inherent higher peak-to-average power ratio (PAPR) in lattice OFDM (LOFDM) is higher than that of conventional OFDM systems, a novel continuous and differentiable nonlinear companding scheme is investigated and analyzed when employing the ...
Si-ming PENG +4 more
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An Enhanced Companding Algorithm for Universal Filtered Multi-Carrier System
ETRI JournalThis paper proposes a new companding scheme called three μ-law compand-ing to reduce the peak-to-average power ratio (PAPR) in a universal filtered multicarrier system. The proposed scheme is more flexible and provides better PAPR reduction and bit error
Vijaya Durga Chintala +3 more
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IEEE AccessFor optical communication, the transmitted signal must be real-valued that can be achieved by employing Hermitian symmetry (HS). But the HS results in increased power consumption and decreased spectral efficiency (SE). Therefore, a HS free asymmetrically
Vijaya Durga Chintala +4 more
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IEEE Access, 2019 Reliable wireless data transmission in intelligent transportation systems (ITS) has drawn a wide concern in recent years. As an efficient wireless transmission technology, multi-carrier communication (MCM) finds its way in many applications. However, the
Jun Hou +5 more
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Piecewise-linear companding transform for peak-to-average power ratio reduction of OFDM signals
Tongxin xuebao, 2011 In order to reduce the peak-to-average power ratio（PAPR） of orthogonal frequency division multiplexing（OFDM） signals,a piecewise-linear companding transform was proposed.Small amplitudes were multiplied by a scale factor,while large ones were not only ...
YANG Pin-lu, HU Ai-qun
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A Joint Linearization/Companding Approach for Improving a CO-OFDM Transmitter
, 2015 International audience—The joint use of peak-to-average power ratio (PAPR) reduction and linearization via digital predistortion is investigated in this letter, with the view to improve the performances of coherent optical OFDM (CO-OFDM) systems ...
Azou, Stéphane +6 more
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Companding in signal processing
Electronics Letters, 1990 The use of companding in signal processing is considered. The applications discussed include noise reduction as well as increasing selectivity in single sinusoid detection.
Y.P. Tsividis, V. Gopinathan, L. TóTh
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