PAPR reduction using genetic algorithm in lifting-based wavelet packet modulation systems

Taşpınar, Necmi; Bozkurt, Yüksel Tokur

doi:10.3906/elk-1306-236

Cited by 15 publications

(9 citation statements)

References 25 publications

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“…In this study, it is recommended to combine Walsh–Hadamard transform (WHT) [ 16 ] and Lifting Wavelet Transformation (LWT) [ 17 ] with GFDM waveform to increase the achievement of multi-carrier wireless telecommunication schemes using GFDM scheme. To examine the performance of the proposed WHT-LWT-GFDM waveform and to compare with waveforms such as conventional OFDM, GFDM and WHT-GFDM [ 18 ], using WHT, the computer simulation studies are performed over additive white Gaussian noise (AWGN) and frequency flat Rayleigh fading channels.…”

Section: Introductionmentioning

confidence: 99%

A Novel GFDM Waveform Design Based on Cascaded WHT-LWT Transform for the Beyond 5G Wireless Communications

Maras

Ayvaz

Gomec³

et al. 2021

Sensors

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In this paper, a new WHT-LWT-GFDM waveform obtained by combining Walsh–Hadamard Transform (WHT), Lifting Wavelet Transform (LWT), and Generalized Frequency Division Multiplexing (GFDM) is presented for use in next-generation wireless communication systems. The proposed approach meets the requirement of 5th-generation (5G) and beyond communication schemes in terms of low latency, low peak-to-average-power ratio (PAPR), and low bit-error rate (BER). To verify the performance of the presented waveform, PAPR and BER simulation results were obtained in additive white Gaussian noise (AWGN) and flat Rayleigh fading channels, and the performance of the proposed system was compared with conventional Orthogonal Frequency Division Multiplexing (OFDM), GFDM, and Walsh–Hadamard transform-based GFDM (WHT-GFDM). Simulation results show that the proposed waveform achieves the best BER and PAPR performances and it provides considerable performance gains over the conventional waveforms.

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Section: Introductionmentioning

confidence: 99%

A Novel GFDM Waveform Design Based on Cascaded WHT-LWT Transform for the Beyond 5G Wireless Communications

Maras

Ayvaz

Gomec³

et al. 2021

Sensors

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“…In 2015, Taspinar and Yildirim [52] returned again and introduced the Parallel Artificial Bee Colony (P-ABC) Algorithm to reduce the mathematical complexity performance of his previous method. Other solutions for reducing the computational complexity were described in [53]- [55] so that the authors improved the computational complexity with a bit degradation in PAPR performance by applying Parallel Tabu Search (Parallel TS) algorithm, Backtracking Search Algorithm (BSA), and Genetic Algorithm (GA), respectively. Recently, several authors have proposed new methods to enhance the PTS technique, for example, Joo et al [56] proposed a PTS method without side information (SI) by applying phase offset to the rotation vectors, while Tokur et al [57] developed the PAPR reduction performance with low computational complexity using differential evolution algorithm-based PTS scheme in lifting-based wavelet packet modulation (LBWPM) system.…”

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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“…Although GWO has a high convergence rate, it cannot significantly reduce PAPR. Also, several optimization approaches based on the genetic algorithm (GA), 25,26 hybrid GA (HGA), 27 particle swarm optimization (PSO), 28 tabu search, 29 differential evolution algorithm, 30 backtracking search algorithm 31,32 have been developed for PAPR reduction so far.…”

Section: Introductionmentioning

confidence: 99%

A novel ant colony optimization algorithm for PAPR reduction of OFDM signals

Aghdam

Sharifi

2020

Int J Communication

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SummaryThe high peak‐to‐average power ratio (PAPR) is the main challenge of orthogonal frequency division multiplexing (OFDM) systems. Partial transmit sequence (PTS) is a useful approach to diminish the PAPR. Although the PTS approach significantly decreases the PAPR, it requires to explore all possible sequences of phase weighting factors. Hence, the computational cost exponentially increases with the number of divided subblocks. This paper proposes a novel PTS technique based on ant colony optimization (ACO) to diminish the high PAPR and computational cost of OFDM systems. By the new representation of phase factors as a graph, the improved ACO algorithm is combined with the PTS method to explore the optimal compound of the phase rotation factors. Simulation results represent that the proposed ACO‐based PTS approach significantly reduces the PAPR and improves the computational cost at the same time. A comparative analysis of the other meta‐heuristics shows that the ACO‐PTS approach outperforms the genetic algorithm, particle swarm optimization, and gray wolf optimization in terms of reducing PAPR.

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PAPR reduction using genetic algorithm in lifting-based wavelet packet modulation systems

Cited by 15 publications

References 25 publications

A Novel GFDM Waveform Design Based on Cascaded WHT-LWT Transform for the Beyond 5G Wireless Communications

A Novel GFDM Waveform Design Based on Cascaded WHT-LWT Transform for the Beyond 5G Wireless Communications

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

A novel ant colony optimization algorithm for PAPR reduction of OFDM signals

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