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
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
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
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
Piecewise Companding Transform Assisted Optical-OFDM Systems for Indoor Visible Light Communications
IEEE Access, 2017 In visible light communications (VLCs) relying on intensity-modulation and direct detection (IM/DD), the conversion from electrical signals to optical signals and the limited dynamic range of the light-emitting diodes (LEDs) constitute the fundamental ...
Hongming Zhang +2 more
doaj +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 Novel Companding Technique to Reduce High Peak to Average Power Ratio in OFDM Systems
IEEE Access, 2021 The reduction of the high peak-to-average-power ratio (PAPR) is important to the efficiency of the orthogonal frequency division multiplexing (OFDM) technique.
Abdulwahid Mohammed +3 more
doaj +1 more source
A Simplified Scheme of Estimation and Cancellation of Companding Noise for Companded Multicarrier Transmission Systems [PDF]
, 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 ...
Jian, W. +4 more
core +4 more sources
Performance Analysis of the Two-Piecewise Linear Companding Technique on Filtered-OFDM Systems
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 +1 more source