PAPR reduction in OFDM systems: An efficient PTS approach based on particle swarm optimization

Aghdam, Mehdi Hosseinzadeh; Sharifi, Abbas Ali

doi:10.1016/j.icte.2018.10.003

Cited by 77 publications

(23 citation statements)

References 4 publications

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“…In this subsection, we compare the proposed method with PTS and some of its variants: Hybrid Genetic Algorithm PTS (HGA-PTS) [15], Genetic Algorithm PTS (GA-PTS) [34], Random Search PTS (RS) [38], Iterative flipping PTS (IPTS) [38], PSO-PTS [16], and Optimal PTS (OPTS) with an exhaustive search [15]. The parameters of PTS are as follows: The performance in terms of the PAPR is depicted in Figure 19.…”

Section: Papr Comparison With Pts Variantsmentioning

confidence: 99%

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Palm Date Leaf Clipping: A New Method to Reduce PAPR in OFDM Systems

et al. 2020

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Orthogonal frequency division multiplexing (OFDM) is the key technology used in high-speed communication systems. One of the major drawbacks of OFDM systems is the high peak-to-average power ratio (PAPR) of the transmitted signal. The transmitted signal with a high PAPR requires a very large linear range of the Power Amplifier (PA) on the transmitter side. In this paper, we propose and study a new clipping method named Palm Clipping (Palm date leaf) based on hyperbolic cosine. To evaluate and analyze its performance in terms of the PAPR and Bit Error Rate (BER), we performed some computer simulations by varying the Clipping Ratio (CR) and modulation schemes. The obtained results show that it is possible to achieve a gain of between 7 and 9 dB in terms of PAPR reduction depending on the type of modulation. In addition, comparison with several techniques in terms of PAPR and BER shows that our method is a strong alternative that can be adopted as a PAPR reduction technique for OFDM-based communication systems.

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Section: Papr Comparison With Pts Variantsmentioning

confidence: 99%

“…It is known that PTS is a popular method used to reduce PAPR in OFDM systems. Several variants of PTS have been proposed, such as Hybrid Genetic Algorithm Partial Transmit Sequences (HGA-PTS) [15], Particle Swarm Optimization Partial Transmit Sequences (PSO-PTS) [16], and Genetic Algorithm Partial Transmit Sequences (GA-PTS) [17].…”

Section: Introductionmentioning

confidence: 99%

Palm Date Leaf Clipping: A New Method to Reduce PAPR in OFDM Systems

et al. 2020

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“…In addition, IoT needs to have a low power system, so we limit the real tests up to 5 W of average power. Different studies such as [28][29][30] show that OFDM IBOs are typical between 6 and 14 dBs. In Table 4, we can see the transmitted PAPR in terms of IBOs and the average power that is transmitted.…”

Section: Ber Cdf Vs Ibomentioning

confidence: 99%

NVIS Multicarrier Modulations for Remote-Sensor Applications

Maso

Gonzalez

Male

et al. 2020

Sensors

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The number of Internet of Things (IoT) devices has experienced a large growth during the last decade, as well as the data volume gathered from remote sensors. Satellites are still a suitable communication method and may be preferable for a remote ubiquitous sensor network (USN), which sometimes are located in places without much communications infrastructure where coverage is the principal drawback. Alternatively, the proposed solution for this article aims at a near-vertical incidence skywave (NVIS) channel for high frequencies (HF) with a low-cost platform, allowing a low-power transmissions coverage area up to 250 km for USN. The HF standards are focused on generic communication channels not being robust for NVIS communications. In this article we study and test an alternative based on orthogonal frequency-division multiplexing (OFDM) modulations to make them more robust and less dependent on the channel NVIS communications. For that purpose, we test the HF standard modulations and a designed OFDM modulation to prove the robustness of each. This study has been tested between Barcelona and Tarragona, using different transmission power levels and modulation orders.

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“…Please note that the first paragraph of a section or subsection is not A lot of latest wireless standards have been using OFDM as a communication form of multicarrier modulation technique [1][2][3][4][5][6]. A lot of broadcast levels for example 3GPP, Digital Video Broadcasting (DVB) standards, Digital Audio Broadcasting (DAB) standards, Terrestrial Digital Video Broadcasting (DVB-T) and smart grid system have been implementing in this system [1,7].…”

Section: Introductionmentioning

confidence: 99%

“…Cellular telecommunication standard, Long Term Evolution (LTE) are no exception from using OFDM [1]. In conclusion, it is commonly applied to gain high-speed transmission above frequencyselective fading [2]. Data transmitted are spread from a big number of orthogonal carriers that are closely spaced and every carrier are modulated at a very low data rate.…”

Section: Introductionmentioning

confidence: 99%

PAPR Reduction of OFDM System Using Selective Mapping (SLM) and Firefly Algorithm (FA)

Qamarina

Wahab

Othman

et al. 2021

Lecture Notes in Electrical Engineering

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Orthogonal Frequency Division Multiplexing (OFDM) is an encoding method that are hugely utilized in wireless communication due to its high number of advantages such as tolerance for multipath delay spread, frequency selective fading channels immune and also power efficiency. The bad side of this method is it has high Peak Average Power Ratio (PAPR) that will generate nonlinear distortions and severe power penalty. In this research, Selective Mapping (SLM) method is proposed to solve the problem of high PAPR but from previous researches, it could be seen that in SLM, the search complexity increases as the number of phase sequence increase. To solve this issue, Firefly Algorithm (FA) is applied to optimize the function of SLM. The modulation method used is Quadrature Phase Shift Keying (QPSK). By the end of the process, CCDF and BER plots are computed. The performance of PAPR reduction in OFDM system are analyzed by different number of subcarriers, phase sequences, randomization parameters and iterations using CCDF graphs. The performance of OFDM channel through AWGN channel is studied with different number of subcarriers. By using SLM method only, the PAPR values manage to be reduced by 0.4-3 dB but with FA-SLM algorithm, the PAPR values can be reduced by 5-9.5 dB. With these results, it is concluded that the combination of SLM with FA can help to improve computational complexity in SLM and eventually reduce PAPR value in OFDM system.

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PAPR reduction in OFDM systems: An efficient PTS approach based on particle swarm optimization

Cited by 77 publications

References 4 publications

Palm Date Leaf Clipping: A New Method to Reduce PAPR in OFDM Systems

Palm Date Leaf Clipping: A New Method to Reduce PAPR in OFDM Systems

NVIS Multicarrier Modulations for Remote-Sensor Applications

PAPR Reduction of OFDM System Using Selective Mapping (SLM) and Firefly Algorithm (FA)

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