Results 81 to 90 of about 918 (208)
A Novel Alternating μ-Law Companding Algorithm for PAPR Reduction in OFDM Systems
Orthogonal frequency division multiplexing (OFDM) inherits multi-carrier systems’ inevitable high peak-to-average power ratio (PAPR) problem. In this paper, a novel alternating companding technique is proposed to combat the harassment of high PAPR.
Zi-Teng Zhan +2 more
core +1 more source
Joint PAPR Reduction Technology Enabled by Neural Network-based Coding and Companding
Guangtongxin yanjiu, 2023 Multi-carrier modulation technology is an advanced modulation method commonly used in broadband communication systems. However, multi-carrier signals will produce a very large Peak to Average Power Ratio (PAPR) in the time domain, which will lead to non ...
Nie Jun-yuan, Zhang Da-wei, Zhang Jing
doaj
ICT Express, 2019 Due to large peak-to-average power ratio (PAPR) at the time domain OFDM signal, various peak signal reduction methods for OFDM systems have been proposed.
Satoshi Taroda +4 more
doaj +1 more source
Vector quantization by companding a union of Z-lattices
, 2005 An encoding scheme is presented based on random coding theory in conjunction with companding techniques. This combination provides an easy design, and a low-storage quantizer. The groundwork of the study is Gaussian sources.
Shabestary, T. Z., +3 more
core +1 more source
Measurement: SensorsIn order to advance 5G wireless communication technology, this paper presents a novel method for lowering the Peak-to-Average Power Ratio (PAPR) in Multiple-Input Multiple-Output Orthogonal Frequency-Division Multiplexing (MIMO-OFDM) systems.
D. Ramadevi, P. Trinatha Rao
doaj +1 more source
Delta modulation techniques for low bit-rate digital speech encoding
, 1985 Includes bibliography.Two new hybrid companding delta modulators for speech encoding are presented here. These modulators differ from the Hybrid Companding Delta Modulator (HCDM) proposed by Un et al in that the two new encoders employ Song Voice ...
Irvine, James Moir
core
Exponential companding and active constellation extension comparisons for PAPR reduction
, 2014 One of the major drawbacks of the orthogonal frequency division multiplexing (OFDM) type of communication is the high peak-to-average power ratio (PAPR) of the transmitted signal.
Atso Hekkala +5 more
core +1 more source
ADAPTIVE COMPRESSING OF THE HIGH DYNAMIC RANGE OF DIGITAL RADAR SATELLITE IMAGES
Informatika, 2018 Transformation of a digital radar image with a wide dynamic range of luminance values (up to 216 tones) for visualization on a standard monitor is considered. The monitor has 28 gray value range or any of three basic colors in the RGB system.
V. V. Starovoitov
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PAPR REDUCTION IN ACO-OFDM FOR VISIBLE LIGHT COMMUNICATION SYSTEM [PDF]
Journal of Engineering Science and Technology, 2018 Visible Light Communication (VLC) is gaining popularity in optical wireless. In conventional OFDM, bi-polar signals having both positive and negative values are considered.
MOHIT SRIVASTAVA +3 more
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Constrained RS coding for Low Peak to Average Power Ratio in FBMC - OQAM Systems [PDF]
Journal of Electrical and Electronics Engineering, 2019 Multi-carrier modulation techniques have now become a standard in many communication protocols. Filter bank based multi-carrier (FBMC) generation techniques have been discussed in the literature as a means for overcoming the shortcomings of IFFT/FFT ...
Job CHUNKATH +2 more
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