A Novel Hybrid Precoding-Companding Technique for Peak-to-Average Power Ratio Reduction in 5G and beyond [PDF]
Sensors, 2021 Several high-speed wireless systems use Orthogonal Frequency Division Multiplexing (OFDM) due to its advantages. 5G has adopted OFDM and is expected to be considered beyond 5G (B5G).
Mohamed Mounir +4 more
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On companding techniques for PAPR reduction in DCT SC-FDMA system in the presence of CFOs
Alexandria Engineering Journal, 2023 In the single carrier frequency division multiple access (SC-FDMA) system, the use of discrete cosine transform (DCT) instead of discrete Fourier transform (DFT) has shown improved bit error rate (BER) performance.
Naim Ben Ali +5 more
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The Research on Improved Companding Transformation for Reducing PAPR in Underwater Acoustic OFDM Communication System [PDF]
Discrete Dynamics in Nature and Society, 2016 To solve the problem of the high peak-to-average power ratio (PAPR) in Orthogonal Frequency Division Multiplexing (OFDM) for the underwater acoustic communication system, the paper offers a method of reducing PAPR which combines the amplitude limiting ...
Jinqiu Wu, Gang Qiao, Xiaofei Qi
doaj +3 more sources
Research on Digital Steganography and Image Synthesis Model Based on Improved Wavelet Neural Network. [PDF]
Comput Intell Neurosci, 2022 Network compression coding technology is a research hotspot in the field of digital steganography and image synthesis. How to improve image quality while achieving short compression time is a problem currently faced. Based on the improved wavelet neural network theory, this paper constructs a digital steganography and image synthesis model.
Li X, Yao R, Lee J.
europepmc +2 more sources
Low complexity hybrid algorithm for improving PAPR BER and PSD in OTFS under diverse channel conditions [PDF]
Scientific ReportsIn this study, the Peak-to-Average Power Ratio (PAPR) and Bit Error Rate (BER) performance in Orthogonal Time Frequency Space (OTFS) modulation with Non-Orthogonal Multiple Access (NOMA) over Rayleigh fading channels were investigated.
Arun Kumar +3 more
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A Hybrid Approach to Reduce the PAPR of OFDM Signals Using Clipping and Companding
IEEE Access, 2020 Orthogonal frequency division multiplexing (OFDM) is an important technology that has been widely used in broadband wireless communications. However OFDM has some drawbacks, one of which is the high peak-to-average power ratio (PAPR) problem.
Bo Tang, Kaiyu Qin, Haibo Mei
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Graph-guided adaptive companding for PAPR reduction in power-domain NOMA systems. [PDF]
PLoS ONEPower-domain Non-Orthogonal Multiple Access (PD-NOMA) is a promising multiple-access technique for fifth-generation (5G) and beyond-fifth-generation (B5G/6G) wireless networks because of its ability to improve spectral efficiency, massive connectivity ...
Arun Kumar +4 more
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Performance evaluation of PAPR reduction in FBMC system using nonlinear companding transform
ICT 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
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Speech Technology Progress Based on New Machine Learning Paradigm. [PDF]
Comput Intell Neurosci, 2019 Speech technologies have been developed for decades as a typical signal processing area, while the last decade has brought a huge progress based on new machine learning paradigms. Owing not only to their intrinsic complexity but also to their relation with cognitive sciences, speech technologies are now viewed as a prime example of interdisciplinary ...
Delić V +8 more
europepmc +2 more sources
The Mars Science Laboratory (MSL) Mast cameras and Descent imager: Investigation and instrument descriptions. [PDF]
Earth Space Sci, 2017 Abstract The Mars Science Laboratory Mast camera and Descent Imager investigations were designed, built, and operated by Malin Space Science Systems of San Diego, CA. They share common electronics and focal plane designs but have different optics. There are two Mastcams of dissimilar focal length. The Mastcam‐34 has an f/8, 34 mm focal length lens, and
Malin MC +28 more
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