PAPR Reduction of an OFDM Signal by Use of PTS With Low Computational Complexity

Yang, Lin; Chen, R.S.; Siu, Y.M.; Soo, K.K.

doi:10.1109/tbc.2005.856727

Cited by 140 publications

(65 citation statements)

References 13 publications

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“…CCDF [12,13] of the PAPR denotes the probability that the PAPR of a data block exceeds a given threshold. CCDF is the most frequently used performance metric for PAPR reduction methods.…”

Section: Resultsmentioning

confidence: 99%

Peak-to-average power ratio reduction in OFDM systems using an adaptive differential evolution algorithm

Ghosh

Roy

Das

et al. 2011

2011 IEEE Congress of Evolutionary Computation (CEC)

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Abstract-Orthogonal Frequency Division Multiplexing (OFDM) has emerged as very popular wireless transmission technique in which digital data bits are transmitted at a high speed in a radio environment. But the high peak-to-average power ratio (PAPR) is the major setback for OFDM systems demanding expensive linear amplifiers with wide dynamic range. In this article, we introduce a low-complexity partial transmit sequence (PTS) technique for diminishing the PAPR of OFDM systems. The computational complexity of the exhaustive search technique for PTS increases exponentially with the number of sub-blocks present in an OFDM system. So we propose a modified Differential Evolution (DE) algorithm with novel mutation, crossover as well as parameter adaptation strategies (MDE_pBX) for a sub-optimal PTS for PAPR reduction of OFDM systems. MDE_pBX is utilized to search for the optimum phase weighting factors and extensive simulation studies have been conducted to show that MDE_pBX can achieve lower PAPR as compared to other significant DE and PSO variants like JADE, SaDE and CLPSO.

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“…CCDF [12,13] of the PAPR denotes the probability that the PAPR of a data block exceeds a given threshold. CCDF is the most frequently used performance metric for PAPR reduction methods.…”

Section: Resultsmentioning

confidence: 99%

Peak-to-average power ratio reduction in OFDM systems using an adaptive differential evolution algorithm

Ghosh

Roy

Das

et al. 2011

2011 IEEE Congress of Evolutionary Computation (CEC)

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“…After that, each subblock rotates by phase weighting vectors b v , and combines with other subblocks to generate a set of candidates. The candidate sequence which achieves the minimum PAPR value is selected for transmission [32]. Therefore, the time domain signal after combining the subblocks is given by…”

Section: Conventional Partial Transmit Sequence (C-pts)mentioning

confidence: 99%

An Enhanced Partial Transmit Sequence Segmentation Schemes to Reduce the PAPR in OFDM Systems

Al‐Jawhar¹,

Shah²,

Taher³

et al. 2016

ijacsa

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Abstract-Although the orthogonal frequency division multiplexing system (OFDM) is widely used in high-speed data rate wire and wireless environment, the peak-to-average-powerratio (PAPR) is one of its major obstacles for the real applications. The high PAPR value leads some devices of the OFDM system such as power amplifiers and analog to digital converters to work out of band of these devices. Thus the system efficiency is degraded. Many techniques have been proposed to overcome the high PAPR in OFDM systems such as partial transmit sequences (PTS), selected mapping and interleaving technique. PTS is considered as one of the effective PAPR reduction methods; this scheme depends on segmentation of the input data into several subblocks and then combined again. The three well-known segmentation schemes are pseudo-random, adjacent and interleaving; each scheme has PAPR reduction performance, and computational complexity differs from one to another. In this paper, five types of segmentation schemes are proposed to improve the PAPR reduction execution including sine and cosine shape as well as hybrid interleaving and adjacent schemes in new approaches. From the simulation results, the proposed methods can achieve PAPR reduction performance greater than that of the adjacent and interleaving partition schemes, without increasing the computational complexity of the system. Moreover, the enhanced schemes can realize better PAPR performance with any number of subcarriers.

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“…However, the ESA requires an exhaustive search over all combinations of the allowed phase factors and has exponential search complexity with the number of subblocks. To reduce the computational complexity, some simplified search techniques have been proposed such as the Iterative Flipping Algorithm (IFA) [21]. Although the IFA significantly reduces the search complexity, there has been some gap between its PAPR reduction performance and that of the ESA.…”

Section: Partial Transmit Sequences (Pts)mentioning

confidence: 99%

Performance Analysis of Peak-to-Average Power Ratio Reduction Techniques for Wireless Communication Using OFDM Signals

Sharma

Basu

2010

2010 International Conference on Advances in Recent Technologies in Communication and Computing

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Orthogonal Frequency Division Multiplexing (OFDM) has been currently under intense research for broadband wireless transmission due to its robustness against multipath fading. However OFDM signals have a problem with high Peak-toAverage power ratio (PAPR) and thus, a power amplifier must be carefully manufactured to have a linear input-output characteristic or to have a large input power back-off. In this paper, some of the important PAPR reduction techniques which have been compared based on computational complexity, bandwidth expansion, spectral spillage and performance.

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PAPR Reduction of an OFDM Signal by Use of PTS With Low Computational Complexity

Cited by 140 publications

References 13 publications

Peak-to-average power ratio reduction in OFDM systems using an adaptive differential evolution algorithm

Peak-to-average power ratio reduction in OFDM systems using an adaptive differential evolution algorithm

An Enhanced Partial Transmit Sequence Segmentation Schemes to Reduce the PAPR in OFDM Systems

Performance Analysis of Peak-to-Average Power Ratio Reduction Techniques for Wireless Communication Using OFDM Signals

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