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
doaj +2 more sources
A Simplified Scheme of Estimation and Cancellation of Companding Noise for Companded Multicarrier Transmission Systems [PDF]
Radioengineering, 2015 Nonlinear companding transform is an efficient method to reduce the high peak-to-average power ratio (PAPR) of multicarrier transmission systems. However, the introduced companding noise greatly degrades the bit-error-rate (BER) performance of the ...
S. Peng +4 more
doaj +6 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
doaj +2 more sources
A Hybrid Companding and Clipping Scheme for PAPR Reduction in OFDM Systems
IEEE Access, 2021 Orthogonal frequency division multiplexing (OFDM) continues to be deployed in 5G communication systems and is likely to be used in beyond 5G (B5G) communication systems as well, due to its many advantages. However, one major drawback with OFDM systems is
ZhiTong Xing +2 more
exaly +3 more sources
Conference on Lasers and Electro-Optics, 2017 We introduce a new nonlinear analog optical computing concept that compresses the signal's dynamic range and realizes non-uniform quantization that reshapes and improves the signal-to-noise ratio in the digital ...
Jalali, Bahram, Jiang, Yunshan
core +2 more sources
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
Abdelhalim Zekry, Fatma Newagy
exaly +3 more sources
On the selection of the best companding technique for PAPR reduction in OFDM systems
Journal 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 B El Mashade
exaly +2 more sources
PALM CLIPPING AND NONLINEAR COMPANDING TECHNIQUES BASED PAPR REDUCTION IN OFDM-DCSK SYSTEM
Journal of Engineering and Sustainable Development, 2021 The main drawback of the Orthogonal Frequency Division Multiplexing (OFDM) with Differential Chaos Shift Keying (DCSK) that is named (OFDM-DCSK) is the high Peak to Average Power Ratio (PAPR).
Sajjad R. Abdulridha, Fadhil S. Hasan
doaj +3 more sources
A review of Peak to Average Power Ratio Reduction Schemes in OFDM Systems [PDF]
Kirkuk Journal of Science, 2022 This paper is concerned with the Orthogonal Frequency Division Multiplexing (OFDM) system that is adopted by a wireless communication system for transmitting multicarrier modulated signals simultaneously with robustness against interference and noise ...
Bana Shekh Faraj, Abdulrahman Siddiq
doaj +1 more source
Entropy Density and Mismatch in High-Rate Scalar Quantization with Renyi Entropy Constraint [PDF]
, 2012 Properties of scalar quantization with $r$th power distortion and constrained R\'enyi entropy of order $\alpha\in (0,1)$ are investigated. For an asymptotically (high-rate) optimal sequence of quantizers, the contribution to the R\'enyi entropy due to ...
Kreitmeier, Wolfgang, Linder, Tamas
core +3 more sources