Journal ArticleDOI
Effects of clipping and filtering on the performance of OFDM
Xiaodong Li,Leonard J. Cimini +1 more
TLDR
This work investigates, through extensive computer simulations, the effects of clipping and filtering on the performance of OFDM, including the power spectral density, the crest factor, and the bit-error rate.Abstract:
Orthogonal frequency division multiplexing (OFDM) is an attractive technique for wireless communication applications. However, an OFDM signal has a large peak-to-mean envelope power ratio, which can result in significant distortion when passed through a nonlinear device, such as a transmitter power amplifier. We investigate, through extensive computer simulations, the effects of clipping and filtering on the performance of OFDM, including the power spectral density, the crest factor, and the bit-error rate. Our results show that clipping and filtering is a promising technique for the transmission of OFDM signals using realistic linear amplifiers.read more
Citations
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Journal ArticleDOI
An overview of peak-to-average power ratio reduction techniques for multicarrier transmission
Seung Hee Han,Jae Hong Lee +1 more
TL;DR: Some of the important PAPR reduction techniques for multicarrier transmission including amplitude clipping and filtering, coding, partial transmit sequence, selected mapping, interleaving, tone reservation, tone injection, and active constellation extension are described.
Journal ArticleDOI
Power of Deep Learning for Channel Estimation and Signal Detection in OFDM Systems
TL;DR: The proposed deep learning-based approach to handle wireless OFDM channels in an end-to-end manner is more robust than conventional methods when fewer training pilots are used, the cyclic prefix is omitted, and nonlinear clipping noise exists.
Journal ArticleDOI
Peak-to-mean power control in OFDM, Golay complementary sequences and Reed-Muller codes
James A. Davis,Jonathan Jedwab +1 more
TL;DR: A previously unrecognized connection between Golay complementary sequences and second-order Reed-Muller codes over alphabets Z/sub 2/h is found to give an efficient decoding algorithm involving multiple fast Hadamard transforms.
Journal ArticleDOI
OFDM and Its Wireless Applications: A Survey
TL;DR: This paper addresses basic OFDM and related modulations, as well as techniques to improve the performance of OFDM for wireless communications, including channel estimation and signal detection, time- and frequency-offset estimation and correction, peak-to-average power ratio reduction, and multiple-input-multiple-output (MIMO) techniques.
Journal ArticleDOI
Peak-to-average power ratio reduction of an OFDM signal using partial transmit sequences
TL;DR: Suboptimal strategies for combining partial transmit sequences that achieve similar performance but with reduced complexity are presented.
References
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Proceedings ArticleDOI
Envelope variations and spectral splatter in clipped multicarrier signals
R. O'Neill,L.B. Lopes +1 more
TL;DR: It will be shown that considerable reductions in the amplitude variations (crest factor) of both classes of signal are possible at the expense of limited inband spectral distortion and some out of band clip noise emissions.
Proceedings ArticleDOI
Effects of clipping and filtering on the performance of OFDM
Xiaodong Li,Leonard J. Cimini +1 more
TL;DR: This work investigates, through extensive computer simulations, the effects of clipping and filtering on the performance of OFDM, including the power spectral density, the bit error rate, and the PMEPR, and shows that clip and filtering is a promising technique for the transmission of OfDM signals using realistic linear amplifiers.
Proceedings ArticleDOI
Minimisation of the peak to mean envelope power ratio of multicarrier transmission schemes by block coding
T.A. Wilkinson,A.E. Jones +1 more
TL;DR: In this paper, a block coding scheme for the reduction of the peak to mean envelope power ratio of multicarrier transmission schemes is described and the principle of the scheme is illustrated with the specific example of a four carrier signal.
Journal ArticleDOI
Modulation techniques for microwave digital radio
Proceedings ArticleDOI
SNR and spectral properties for a clipped DMT ADSL signal
R. Gross,D. Veeneman +1 more
TL;DR: An accurate model developed to analyze the effects of clipping for a Gaussian signal with an arbitrary spectrum is presented and shows a 5 dB improvement in the signal-to-noise (SNR) ratio compared to previous work using an approximate analysis.
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Reducing the peak-to-average power ratio of multicarrier modulation by selected mapping
OFDM with reduced peak-to-average power ratio by optimum combination of partial transmit sequences
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An overview of peak-to-average power ratio reduction techniques for multicarrier transmission
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