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A Companding Technique for PAPR Reduction of OFDM Systems
2006 International Symposium on Intelligent Signal Processing and Communications, 2006A companding technique using the hyperbolic tangent transform is proposed for reducing the peak-to-average-power ratio (PAPR) of orthogonal frequency division multiplexing (OFDM) signals. This technique is practical and can be implemented easily in integrated circuit design.
Miin-Jong Hao, Chung-Ping Liaw
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"Noninvasive" techniques for syllabic companding in signal processors
ISCAS 2001. The 2001 IEEE International Symposium on Circuits and Systems (Cat. No.01CH37196), 2002Two novel methods are described for syllabic companding in signal processors which make state variable updating unnecessary, for piecewise constant input and output gains. Measurements and simulations are used as confirmation of the validity of the proposed techniques.
László Tóth 0007 +2 more
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Comparision between SLM-companding and precoding-companding techniques in OFDM systems
2016 International Conference on Circuit, Power and Computing Technologies (ICCPCT), 2016OFDM is a multicarrier modulation technique which is used in communication systems like Wireless Personal Area Network (WPAN), Wireless Local Area Network (WLAN), Wireless Metropolitan Area Network (WMAN), Wi-Max, DVB-T etc for the high rate transmission over wireless radio channels.
Alex Kangappaden +5 more
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Exponential companding technique for PAPR reduction in OFDM systems
IEEE Transactions on Broadcasting, 2005In this paper, a new nonlinear companding technique, called "exponential companding", is proposed to reduce the high Peak-to-Average Power Ratio (PAPR) of Orthogonal Frequency Division Multiplexing (OFDM) signals. Unlike the /spl mu/-law companding scheme, which enlarges only small signals so that increases the average power, the schemes based on ...
Tao Jiang 0001 +2 more
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Non-Linear Companding Techniques in Universal Filtered Multi Carrier-SLM with OFDM
2020 7th International Conference on Smart Structures and Systems (ICSSS), 2020To reduce the general signal to noise ratio (SNR), the overall performance of the multi service system and reduce the PAPR (peak to average power ratio) in UFMC the usage of MIMO (multi enter and multi output) SLM technique.
K. Dhivya, G. Premalatha, A. Nivetha
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Adaptive Companding as a PAPR Reduction Technique of an OFDM Signal
Journal of Communications, 2012In this paper, a new adaptive PAPR reduction scheme is proposed by which the PAPR of the OFDM signal can be reduced to keep the value lower than a predefined threshold level. A conventional companding is used as a technique to reduce the PAPR of the OFDM signal.
Subaha Mahmuda +2 more
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Lossless Audio Steganographic Method Using Companding Technique
2021The objective of the work presented here was an implementation of lossless steganographic method on audio files in the frequency domain. The main contribution here was to use of companding technique in audio files to preserve the secret data reversibility with less influence on the signal.
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Analysis of improved μ-law companding technique for OFDM systems
IEEE Transactions on Consumer Electronics, 2017High 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. In consumer applications where it impacts mobile terminal battery life and infrastructure running costs ...
Ali, N. +4 more
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Nonlinear companding technique for PAPR reduction in OFDM
2014 International Conference on Signal Propagation and Computer Technology (ICSPCT 2014), 2014In the current scenario, the increasing demand of high speed data transfer in wireless communication has been raised the requirement and optimization of orthogonal frequency division multiplexing (OFDM) based system like Advanced Long Term Evolution system.
Eashendra Singh +3 more
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PAPR reduction in DCO-OFDM VLC system using VLM precoding and nonlinear companding techniques
Journal of optical communicationsVisible light communication (VLC) is a promising and viable optical wireless communication (OWC) system that utilizes light-emitting diodes (LEDs) to achieve high data rates, energy efficiency, and resistance to electromagnetic interference (EMI). Direct-
Maha F. Shatti, A. Sabri, S. Hameed
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