Results 21 to 30 of about 1,404 (166)

Performance evaluation of PAPR reduction in FBMC system using nonlinear companding transform

open access: yesICT Express, 2019
Filter Bank Multicarrier with Offset Quadrature Amplitude Modulation (FBMC/OQAM) is one of the best waveforms used in 5G communications. The FBMC is a multicarrier modulation system (MCM) which suffers from high peak to average power ratio (PAPR) causing
Imad A. Shaheen   +3 more
doaj   +1 more source

AN IMPROVED PAPR REDUCTION TECHNIQUE FOR UNIVERSAL FILTER MULTI-CARRIER MODULATION [PDF]

open access: yesActa Electrotechnica et Informatica, 2018
Universal Filter Multi-Carrier (UFMC) modulation is a potential candidate for next generation wireless communication due to its advantages like better sub carrier separation and less complexity.
Pooja RANI, Silki BAGHLA, Himanshu MONGA
doaj   +1 more source

Two novel nonlinear companding schemes with iterative receiver to reduce PAPR in multi-carrier modulation systems [PDF]

open access: yes, 2006
Companding transform is an efficient and simple method to reduce the Peak-to-Average Power Ratio (PAPR) for Multi-Carrier Modulation (MCM) systems.
Guo, P, Jiang, T, Qu, D, Song, Y, Yao, W
core   +1 more source

On the selection of the best companding technique for PAPR reduction in OFDM systems

open access: yesJournal of Information and Telecommunication, 2019
Orthogonal frequency division multiplexing (OFDM) is used in high data rate applications due to its ability to cope with frequency-selective channels. However, OFDM suffers from the high peak-to-average power ratio (PAPR) problem, which reduces the power
Mohamed Mounir, Mohamed Bakry El_Mashade
doaj   +1 more source

Throughput-Distortion Computation Of Generic Matrix Multiplication: Toward A Computation Channel For Digital Signal Processing Systems [PDF]

open access: yes, 2011
The generic matrix multiply (GEMM) function is the core element of high-performance linear algebra libraries used in many computationally-demanding digital signal processing (DSP) systems.
Anastasia, Davide, Andreopoulos, Yiannis
core   +2 more sources

Companding technique for AM-SCM-PCMlightwave CATV systems

open access: yesElectronics Letters, 1994
The companding technique has been shown theoretically to be effective for improving the fundamental CNR limit of AM-SCM-PCM lightwave CATV systems. For an 8 bit and 10 bit system, the improvement could be 3 and 4 dB, respectively, by use of erf-type companding, the corresponding CNR limits being raised to 44.8 and 56.8 dB, respectively.
Q. Pan, R.J. Green
openaire   +1 more source

Comparison of Companding based PAPR Techniques for OFDM Systems [PDF]

open access: yesInternational Journal of Computer Applications, 2013
LTE has utilized the OFDMA for the downlink which provides spectrum flexibility, inherent resistance to Inter symbol Interference (ISI) and many more. However 3GPP LTE systems suffer from a very common problem known as Peak to Average Power ratio. The present paper tried to discuss the companding based techniques for single user OFDMA systems.
R. K. Mehrotra, Eshaan Verma
openaire   +1 more source

Performance improvement of a SOA-based coherent optical-OFDM transmission system via nonlinear companding transforms [PDF]

open access: yes, 2015
International audienceCoherent-Optical OFDM systems are known to be sensitive to large peak-to-average power ratio (PAPR) at the transmitter output, due to nonlinear properties of some components involved in the transmission link.
Azou, Stéphane   +3 more
core   +2 more sources

Distributed Functional Scalar Quantization Simplified [PDF]

open access: yes, 2012
Distributed functional scalar quantization (DFSQ) theory provides optimality conditions and predicts performance of data acquisition systems in which a computation on acquired data is desired.
Goyal, Vivek K   +2 more
core   +3 more sources

Simplified technique for syllabic companding inlog-domain filters

open access: yesElectronics Letters, 2000
It is shown that when syllabic companding is applied to log-domain filters using dynamic biasing, their large signal linearity can be exploited to eliminate the state variable compensation circuit. Owing to its simplicity, the proposed technique has several advantages over previous approaches.
N. Krishnapura, Y. Tsividis, D.R. Frey
openaire   +1 more source

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