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 +4 more sources
On the selection of the best companding technique for PAPR reduction in OFDM systems [PDF]
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 Bakry El_Mashade
doaj +2 more sources
Analysis of Improved µ-Law Companding Technique for OFDM Systems [PDF]
IEEE Transactions on Consumer Electronics, 2017 YesHigh Peak-to-Average-Power Ratio (PAPR) of transmitted signals is a common problem in broadband telecommunication systems using an orthogonal frequency division multiplexing (OFDM) modulation scheme, as it increases transmitter power consumption.
Abd-Alhameed, Raed A. +4 more
core +3 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
Companding technique for high dynamic range measurements using gafchromic films [PDF]
Medical Physics, 2011 We propose a methodology to perform dose measurements using gafchromic films which can span several decades of dose levels. The technique is based on a rescaling approach using different films irradiated at different dose levels.
Battum +13 more
core +3 more sources
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
doaj +3 more sources
Low-voltage CMOS log-companding techniques for audio applications [PDF]
Analog Integrated Circuits and Signal Processing, 2004 This paper presents a collection of novel current-mode circuit techniques for the integration of very low-voltage (down to 1 V) low-power (few hundreds of μA) complete SoCs in CMOS technologies.
Huertas Díaz, José Luis +2 more
core +6 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
Imad A. Shaheen +3 more
doaj +3 more sources
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
doaj +3 more sources
Performance Analysis of the Two-Piecewise Linear Companding Technique on Filtered-OFDM Systems [PDF]
IEEE Access, 2021 Filtered orthogonal frequency division multiplexing (F-OFDM) is one of the most prominent waveform candidates when it comes to fifth-generation (5G) wireless communication and beyond.
Mishal Al-Gharabally +2 more
doaj +2 more sources