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

The main drawback of the Orthogonal Frequency Division Multiplexing (OFDM) with Differential Chaos Shift Keying (DCSK) that is named (OFDM-DCSK) is the high Peak to Average Power Ratio (PAPR). In this paper, clipping and companding techniques are suggested to overcome the PAPR problem in the OFDM-DCSK system. For the clipping technique, the clipping function is applied before transmitting the signal without the need for an inverse function at the receiver side. While for companding techniques, the commanding function is applied at the end of the transmitter side and the corresponding decompanding function is applied at the receiver to recover the original signal. Different companding techniques are investigated including Hyperbolic, A-Law, and Mu-Law companding function that are compared with the Palm clipping technique. The MATLAB simulation result shows that the Mu-Law technique has the best PAPR reduction (7.22 dB) with a good bit error rate (BER) performance when the number of subcarriers is equal to 512.

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“…At the end of the transmitter, the PC block is added before transmitting the signal. The function of the Palm Clipping is described below [25]:…”

Section: Palm Clipping (Pc) Techniquementioning

confidence: 99%

Palm Clipping and Nonlinear Companding Techniques Based Papr Reduction in Ofdm-DCSK System

Abdulridha

Hasan

2022

jeasd

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“…At the end of the transmitter, the PC block is added before transmitting the signal. The function of the palm clipping is described in (6) [25]:…”

Section: Clipping and Companding Techniques 31 Palm Clipping (Pc) Tec...mentioning

confidence: 99%

Hybrid clipping and companding techniques based peak to average power ratio reduction in orthogonal frequency division multiplexing based differential chaos shift keying system

Alqassab

Hasan

2022

IJECE

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In this paper, a hybrid approach using clipping and companding techniques is introduced to reduce the peak to average power ratio (PAPR) of orthogonal frequency division multiplexing based differential chaos shift keying (OFDM-DCSK), which is the major drawback of the OFDM-DCSK. The hybrid function is processed at the end of the transmitter before transmitting the signal. However, there is no need for an inverse function at the receiver, which decreases the system complexity. Several techniques have been proposed in the literature for decreasing the PAPR value. Clipping and companding are active methods in terms of reducing the PAPR. Finally, the PAPR reduction and bit error rate (BER) performances are evaluated. The simulation results show that this technique gives better performance as compared with the clipping and companding techniques.

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“…They insert dummy sequences in accordance with the inverse fast fourier transform (IFFT) [10] needs no receiver modifications. Also, several techniques were suggested to overcome the issue of PAPR for OFDM systems, like palm date leaf clipping [11] and partial transmit sequences (PTS) [12]. A standard block code [13] was used for error correction and for OFDM PAPR reduction.…”

Section: Introductionmentioning

confidence: 99%

Enhanced SLM based OFDM-DCSK communication system for PAPR reduction

Abdulridha

Hasan

2022

Bulletin EEI

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In this research, a selective mapping (SLM) technique using the Walsh Hadamard (WH) matrix, the Riemann matrix, and the new enhanced Riemann matrix were introduced to reduce the peak to average power ratio (PAPR) of orthogonal frequency division multiplexing based differential chaos shift keying (OFDM-DCSK). Using a new algorithm to reduce the size of the Riemann matrix, which in turn enhances the computational complexity of the SLM system without affecting the performance of PAPR in the main method. The simulation results show that the SLM technique using the Riemann matrix gives better PAPR performance than WH and conventional techniques by gaining about (6.3, 6.15) dB, respectively, for complementary cumulative distribution function (CCDF)=10-3 and the number of candidates U=16. Also, the results show that the SLM technique based enhanced Riemann matrix gives a reduction in computational complexity by reducing the number of candidates U to 4, while maintaining the same PAPR performance.

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

Cited by 17 publications

References 30 publications

Palm Clipping and Nonlinear Companding Techniques Based Papr Reduction in Ofdm-DCSK System

Palm Clipping and Nonlinear Companding Techniques Based Papr Reduction in Ofdm-DCSK System

Hybrid clipping and companding techniques based peak to average power ratio reduction in orthogonal frequency division multiplexing based differential chaos shift keying system

Enhanced SLM based OFDM-DCSK communication system for PAPR reduction

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