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Companding transform for reduction in peak-to-average power ratio of OFDM signals

A general companding transform method is proposed to effectively reduce peak-to-average power ratio (PAPR) of orthogonal frequency division multiplexing (OFDM) signals. By compressing large signals while enhancing small signals along with taking into account their statistical characteristics, this m...

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Published in:	IEEE transactions on wireless communications 2004-11, Vol.3 (6), p.2030-2039
Main Authors:	Xiao Huang, Jianhua Lu, Junli Zheng, Letaief, K.B., Jun Gu
Format:	Article
Language:	English
Subjects:	Additive noise Applied sciences Bit error rate Channels Companding Companding transform Compressing Degradation Exact sciences and technology Frequency division multiplexing Gaussian noise Information, signal and communications theory Multiplexing Noise level OFDM Optical wavelength conversion Orthogonal Frequency Division Multiplexing orthogonal frequency division multiplexing (OFDM) Peak to average power ratio peak-to-average power ratio (PAPR) Reduction Signal and communications theory Signal processing Simulation Telecommunications and information theory Transforms Wireless communication
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cited_by	cdi_FETCH-LOGICAL-c447t-b2ac1f498f31267caadb599680fd305dac3a7bccc48c54d704ffe8d0ee4e48393
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creator	Xiao Huang Jianhua Lu Junli Zheng Letaief, K.B. Jun Gu
description	A general companding transform method is proposed to effectively reduce peak-to-average power ratio (PAPR) of orthogonal frequency division multiplexing (OFDM) signals. By compressing large signals while enhancing small signals along with taking into account their statistical characteristics, this method can achieve significant reduction in PAPR with low implementation complexity. Specifically, we present the design criteria of the transform, which enable effective tradeoff between reduction in PAPR and bit-error rate performance of the OFDM system. It is shown by simulations that the proposed method may significantly improve the performance of OFDM systems in radio channels by carefully choosing the companding form and parameters.
doi_str_mv	10.1109/TWC.2004.837619
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subjects	Additive noise Applied sciences Bit error rate Channels Companding Companding transform Compressing Degradation Exact sciences and technology Frequency division multiplexing Gaussian noise Information, signal and communications theory Multiplexing Noise level OFDM Optical wavelength conversion Orthogonal Frequency Division Multiplexing orthogonal frequency division multiplexing (OFDM) Peak to average power ratio peak-to-average power ratio (PAPR) Reduction Signal and communications theory Signal processing Simulation Telecommunications and information theory Transforms Wireless communication
title	Companding transform for reduction in peak-to-average power ratio of OFDM signals
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