Optimization of Tone Reservation-Based PAPR Reduction for OFDM Systems

Botlik, B.; Horváth, Balint

doi:10.13164/re.2017.0791

Cited by 5 publications

(6 citation statements)

References 10 publications

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“…Many papers work on TR method improvement, where Horvath and Botlik made optimization for TR by changing clipping ratio in each iteration to make limits for the peak values. In our work, we make clipping for the maximum values and amplification for minimum values, the PAPR reduction in this work increases with increasing the number of iterations but in our work the increasing of number of iteration is not useful [12]. Ali et al decrease the complexity of TR technique.…”

mentioning

confidence: 78%

“…where is the clipping amplitude and ( ) is the circularly shifted kernel, then the PAPR value is calculated [12,22].…”

Section: Kernel Based (Tr-k) Methodsmentioning

confidence: 99%

“…An OFDM systems use orthogonal and independent subcarriers, where the modulation process can be easily implemented using simple N-point inverse fast Fourier transform (IFFT) operation, the output signal is a summation of modulated complex harmonics [12] that can be expressed as [13,18]:…”

Section: Ofdm Signal Model and Peak To Average Power Ratio (Papr)mentioning

confidence: 99%

“…The clipped signal ′ is added to the original OFDM signal with weight parameter µ and this operation is repeated for several iterations until minimum PAPR is obtained for the resulting signal , the symbol denotes for each iteration [12,22].…”

Section: ′ = Ifft( ′ )mentioning

confidence: 99%

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OFDM PAPR reduction for image transmission using improved tone reservation

Ghanim

Omran

2021

IJECE

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High peak to average power ration (PAPR) in orthogonal frequency division multiplexing (OFDM) is an important problem, which increase the cost and complexity of high power amplifiers. One of the techniques used to reduce the PAPR in OFDM system is the tone reservation method (TR). In our work we propose a modified tone reservation method to decrease the PAPR with low complexity compared with the conventional TR method by process the high and low amplitudes at the same time. An image of size 128×128 is used as a source of data that transmitted using OFDM system. The proposed method decrease the PAPR by 2dB compared with conventional method with keeping the performance unchanged. The performance of the proposed method is tested with several numbers of subcarriers; we found that the PAPR is reduced as the number of subcarriers decreased.

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mentioning

confidence: 78%

“…where is the clipping amplitude and ( ) is the circularly shifted kernel, then the PAPR value is calculated [12,22].…”

Section: Kernel Based (Tr-k) Methodsmentioning

confidence: 99%

Section: Ofdm Signal Model and Peak To Average Power Ratio (Papr)mentioning

confidence: 99%

Section: ′ = Ifft( ′ )mentioning

confidence: 99%

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OFDM PAPR reduction for image transmission using improved tone reservation

Ghanim

Omran

2021

IJECE

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“…Many techniques have been proposed to reduce the PAPR value and they can be classified into two categories, the first category consists of signal distortion techniques such as clipping [30], clipping and filtering [31], [32], peak windowing [33], active constellation extension (ACE) [34], non-linear companding transforming [35]- [37], and trellis assisted constellation subset selection (TACSS) [38]. The second category includes of signal scrambling techniques such as selective mapping (SLM) [39]- [41], partial transmit sequence (PTS) [42], [43], block coding [44], interleaving technique [45], tone reservation (TR) [46], [47], and tone injection [48].…”

Section: Introductionmentioning

confidence: 99%

A Review of Partial Transmit Sequence for PAPR Reduction in the OFDM Systems

et al. 2019

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Orthogonal frequency division multiplexing (OFDM) is a superior technology for the high-speed data rate of wire-line and wireless communication systems. The OFDM has many advantages over other techniques such as its high capacity and immunity against multipath fading channels. However, one of the main drawbacks of the OFDM system is the high-peak-to-average power ratio (PAPR) that leads the system to produce in-band distortion and out-of-band radiation because of the non-linearity of the high-power amplifiers. Therefore, numerous techniques have been proposed to overcome the PAPR problem such as selective mapping, partial transmit sequence (PTS), clipping, and nonlinear companding. In this paper, the PTS technique was analytically reviewed as one of the important methods to reduce the high PAPR problem. The PAPR performance and the computational complexity level are discussed in terms of modifying the PTS technique in the frequency domain, time domain and modulation stage (inverse fast Fourier transform block). Moreover, the numerical statistic comparison of the current modified-PTS methods is introduced, and the criteria for selecting the suitable modified-PTS method in the OFDM system are also given. The simulation and the numerical calculations results show that the rows exchange-interleaving PTS scheme is the best method for reducing the PAPR value with low complexly in the frequency domain, and the cooperative PTS method is the best among the modulation stage methods, while the cyclic shift sequence PTS method achieves the superior performance in PAPR reduction and computational complexity for the time domain methods.

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