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Journal ArticleDOI

Reducing the peak-to-average power ratio of multicarrier modulation by selected mapping

24 Oct 1996-Electronics Letters (IET)-Vol. 32, Iss: 22, pp 2056-2057
TL;DR: A method for the reduction of peak-to-average transmit power ratio of multicarrier modulation systems, called selected mapping, is presented, which is appropriate for a wide range of applications.
Abstract: The authors propose a method for the reduction of peak-to-average transmit power ratio of multicarrier modulation systems, called selected mapping, is presented, which is appropriate for a wide range of applications. Significant gains can be achieved by selected mapping whereas complexity remains quite moderate.
Citations
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Journal ArticleDOI
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.
Abstract: High peak-to-average power ratio of the transmit signal is a major drawback of multicarrier transmission such as OFDM or DMT. This article describes 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. Also, we make some remarks on the criteria for PAPR reduction technique selection and briefly address the problem of PAPR reduction in OFDMA and MIMO-OFDM.

2,093 citations

Journal ArticleDOI
TL;DR: Different OFDM PAPR reduction techniques are reviewed and analysis, based on computational complexity, bandwidth expansion, spectral spillage and performance, for multiuser OFDM broadband communication systems.
Abstract: One of the challenging issues for Orthogonal Frequency Division Multiplexing (OFDM) system is its high Peak-to-Average Power Ratio (PAPR). In this paper, we review and analysis different OFDM PAPR reduction techniques, based on computational complexity, bandwidth expansion, spectral spillage and performance. We also discuss some methods of PAPR reduction for multiuser OFDM broadband communication systems.

1,451 citations


Additional excerpts

  • ...Each of these alternative input data sequences is made the IFFT operation, and then the one with the lowest PAPR is selected for transmission [51]....

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  • ...Moreover, various approaches also have been proposed to reduce the PAPR including clipping [11]–[14], coding schemes [15]–[21], phase optimization [22], [23], nonlinear companding transforms [24]–[29], Tone Reservation (TR) and Tone Injection (TI) [30], [31], constellation shaping [32]–[34], Partial Transmission Sequence (PTS) and Selective Mapping (SLM) [35]–[51] and other techniques such as pre-scrambles proposed in [52]....

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Journal ArticleDOI
TL;DR: In this paper, the authors proposed a very effective and flexible peak power reduction scheme for orthogonal frequency division multiplexing (OFDM) with almost vanishing redundancy, which works with arbitrary numbers of subcarriers and unconstrained signal sets.
Abstract: The authors propose a very effective and flexible peak power reduction scheme for orthogonal frequency division multiplexing (OFDM) with almost vanishing redundancy. This new method works with arbitrary numbers of subcarriers and unconstrained signal sets. The core of the proposal is to combine partial transmit sequences (PTS) to minimise the peak-to-average power ratio distortion.

1,400 citations

Journal ArticleDOI
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.
Abstract: Orthogonal frequency-division multiplexing (OFDM) effectively mitigates intersymbol interference (ISI) caused by the delay spread of wireless channels. Therefore, it has been used in many wireless systems and adopted by various standards. In this paper, we present a comprehensive survey on OFDM for wireless communications. We address 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. We also describe the applications of OFDM in current systems and standards.

915 citations

Journal ArticleDOI
TL;DR: Suboptimal strategies for combining partial transmit sequences that achieve similar performance but with reduced complexity are presented.
Abstract: Orthogonal frequency-division multiplexing (OFDM) is an attractive technique for achieving high-bit-rate wireless data transmission. However, the potentially large peak-to-average power ratio (PAP) has limited its application. Recently, two promising techniques for improving the PAP statistics of an OFDM signal have been proposed: the selective mapping and partial transmit sequence approaches. Here, we present suboptimal strategies for combining partial transmit sequences that achieve similar performance but with reduced complexity.

896 citations


Cites methods from "Reducing the peak-to-average power ..."

  • ...In the SLM approach, statistically independent sequences of 1 dB is encountered, the optimization process has been reduced to 16 sets of 16 additions, a considerable savings over determining the optimum phase factors....

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  • ...In [7], using 128 subcarriers and , with values chosen from the set { }, the 1% PAP (i....

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  • ...tics of the PAP of an OFDM signal have been proposed: the selective mapping (SLM) [7] and partial transmit sequence (PTS) [8] approaches....

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  • ...In SLM, at the transmitter, one favorable signal Manuscript received September 1, 1999....

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  • ...SLM AND PTS APPROACHES In OFDM, a block of symbols, , is formed with each symbol modulating one of a set of subcarriers, ....

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References
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Book
01 Jan 1983

25,017 citations

Journal ArticleDOI
TL;DR: The general technique of parallel transmission on many carriers, called multicarrier modulation (MCM), is explained, and the performance that can be achieved on an undistorted channel and algorithms for achieving that performance are discussed.
Abstract: The general technique of parallel transmission on many carriers, called multicarrier modulation (MCM), is explained. The performance that can be achieved on an undistorted channel and algorithms for achieving that performance are discussed. Ways of dealing with channel impairments and of improving the performance through coding are described, and implementation methods are considered. Duplex operation of MCM and the possible use of this on the general switched telephone network are examined. >

3,995 citations


"Reducing the peak-to-average power ..." refers methods in this paper

  • ...The main advantage of OFDM is that, by introducing a \guard{period" [1] and using di erential encoding, reliable transmission over spectrally shaped channels is possible without any equalization....

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