DCT precoded SLM technique for PAPR reduction in OFDM systems

Baig, İmran; Jeoti, Varun

doi:10.1109/icias.2010.5716107

Cited by 48 publications

(30 citation statements)

References 15 publications

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“…Recently, signal transformation has been combined with SLM [19], where the discrete cosine transform is incorporated with the conventional SLM scheme. Even if this modification resulted in PAPR reduction in the OFDM signal, it suffers from two main shortcomings.…”

Section: Introductionmentioning

confidence: 99%

Adaptive Hybrid PAPR Reduction in OFDM System

Omer¹,

Abdelreheem²

2013

IJFCC

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Abstract-High Peak to Average Power Ratio (PAPR) is still one of the most important challenges in Orthogonal Frequency Division Multiplexing (OFDM) system. In this paper, we propose a novel scheme based on Selected Mapping (SLM) technique for PAPR reduction in OFDM system. The proposed scheme is an adaptive hybrid scheme, which is based on the SLM technique and multiple transformation techniques. In the proposed scheme, instead of using only Discrete Fourier Transform (DFT) in OFDM system, we suggest to use Discrete Sine Transform (DST) and Discrete Cosine Transform (DCT) as well to get the lowest PAPR. In addition, the multiplied phase in the SLM is adapted to reduce the PAPR to an acceptable low PAPR level. Simulation results show that the proposed scheme technique can reduce the PAPR to about 4 dB in case of 256 sub-carriers and in case of 512 sub-carriers at clipping probability of 10 -3 .

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Section: Introductionmentioning

confidence: 99%

Adaptive Hybrid PAPR Reduction in OFDM System

Omer¹,

Abdelreheem²

2013

IJFCC

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“…Among them, schemes like phase optimization [5], constellation shaping [6], selective-mapping (SLM) [7], nonlinear companding transforms [8], tone-reservation (TR), tone-injection (TI) [9]- [10], partial-transmit-sequence (PTS) [11], clipping and filtering [12]- [13 ], precoding based techniques [14]- [17] precoding based selected mapping (PSLM) techniques [18]- [19] and phase modulation transform [20]- [21] are popular. The precoding based techniques shows great promise as they are simple linear techniques to implement without the need of any side information.…”

Section: Introductionmentioning

confidence: 99%

A Zadoff-Chu Matrix Transform Precoding Based Localized-Ofdma Uplink System: A Papr Analysis With RRC Pulse Shaping

Baig¹,

Jeoti²

2011

Acta Electrotechnica Et Informatica

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“…The discrete cosine transform (DCT) is known for its energy compaction and it has been used in many applications such as compressing images in the JPEG standard 11 . It is not the first time that DCT has been used to reduce PAPR [12][13][14][15] . Here the inverse DCT (IDCT) is used as a precoder for PAPR reduction where each value of the partial input data sequence is spread over all subcarriers using the IDCT.…”

Section: Orthogonalmentioning

confidence: 99%

A new precoded partial transit sequence method using the discrete cosine transform for peak-to-average power ratio reduction in an orthogonal frequency division multiplexing system

Sa'd¹,

Wahab²,

Sa'ad³

2016

ScienceAsia

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ABSTRACT:Orthogonal frequency division multiplexing (OFDM) is a well-known transmission technique that is adopted in a wide range of standards these days mainly because of its high data bit rate and spectral efficiency. However, OFDM has one major problem called the peak-to-average power ratio (PAPR). This paper will introduce a new method that uses the discrete cosine transform to enhance the PAPR reduction over that achieved in the partial transmit sequence (PTS) approach. The maximum achieved improvement of PAPR reduction compared to the conventional PTS approach is 257% with only 4 iterations and the maximum PAPR reduction achieved in the simulation is 5.7 dB.

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DCT precoded SLM technique for PAPR reduction in OFDM systems

Cited by 48 publications

References 15 publications

Adaptive Hybrid PAPR Reduction in OFDM System

Adaptive Hybrid PAPR Reduction in OFDM System

A Zadoff-Chu Matrix Transform Precoding Based Localized-Ofdma Uplink System: A Papr Analysis With RRC Pulse Shaping

A new precoded partial transit sequence method using the discrete cosine transform for peak-to-average power ratio reduction in an orthogonal frequency division multiplexing system

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