Improved Selected Mapping Technique for Reduction of PAPR in OFDM Systems

Gupta, S.C.; Goel, Ashish

doi:10.14569/ijacsa.2020.0111016

Cited by 3 publications

(3 citation statements)

References 18 publications

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“…Where T is the symbol period and B is the bandwidth. To calculate a conversion: (5) Then, the program will calculate the PAPR value for each candidate using the formula: (6) where C is a potential waveform and N is a subcarrier. SLM's C is U, Green OFDM's C is U^2/4 and Green OFDM v2's C is U^2.…”

Section: Where (4)mentioning

confidence: 99%

An Improved PAPR Reduction Scheme using Green OFDM

Aeizaal Azman Abdul Wahab,

Nur Qamarina Muhammad Adnan,

Syed Sahal Nazli Alhady

et al. 2024

ARASET

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OFDM has become popular method to be applied in data communication as it has high data rate. Selective Mapping OFDM (SLM OFDM) is introduced to over-come the OFDM’s disadvantage which is high PAPR. SLM OFDM offers PAPR reduction by selecting OFDM waveform with the lowest PAPR among many copies of waveform candidates, U. As the world become more digitalized and demanding, Green OFDM shows up with more candidates, U^2/4, without making computation more complex. More candidates will promote more choices with lower PAPR values compare to the SLM OFDM. In the recent years, re-searchers have come out with a new improved Green OFDM version 2 with more waveform candidates to be chosen, U^2. The improved Green OFDM ver-sion 2 scheme will produce lower PAPR values compare to the SLM OFDM and the original Green OFDM. Thus, technologies with higher data transmission are able to be created.

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Section: Where (4)mentioning

confidence: 99%

An Improved PAPR Reduction Scheme using Green OFDM

Aeizaal Azman Abdul Wahab,

Nur Qamarina Muhammad Adnan,

Syed Sahal Nazli Alhady

et al. 2024

ARASET

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“…OFDM is a multicarrier orthogonal digital communication scheme [8]. The binary data is encoded into symbols using one of the digital modulation schemes [9], and the modulated symbols are loaded over carrier frequencies. The available channel bandwidth is divided into bands that are called frequency subcarriers, where each one is exploited for transmitting modulated symbols.…”

Section: Introductionmentioning

confidence: 99%

A Novel Quantum Orthogonal Frequency-Division Multiplexing Transmission Scheme

Almasaoodi,

Sabaawi,

Gaily

et al. 2024

ijacsa

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Recently, extensive research attention has been dedicatedto enabling Orthogonal Frequency-Division Multiplexing (OFDM) waveforms to be compatible with a modern communication system. Encoding data as OFDM wavelengths still has a lot of problems, like the peak-to-average power ratio (PAPR) and the cyclic prefix (CP), which are important factors that affect how efficiently the spectrum is used. To meet the quality-of-service requirements imposed by communication system applications, this paper proposes to replace the classical encoding and decoding schemes, classical channel, discrete Fourier transform (DFT), and inverse discrete Fourier transform (IDFT) with their classical counterparts. This new quantum OFDM transmission scheme allows for the preparation of a quantum OFDM symbol without the need to incorporate a CP. To validate the accuracy of the suggested quantum OFDM transmission scheme, we compared it with the most widely recognised reference quantum transmission scheme. We have demonstrated that increasing the channel resistivity results in a higher probability of correctly measuring the quantum state in the quantum OFDM transmission scheme compared to the reference quantum transmission scheme. The results are verified by IBM's Qiskit.

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“…Several approaches to resolving this problem have been offered, the most widely utilized approaches are: Selective Mapping Technique (SLM) [11], Partial Transmit Sequences (PTS) [12], [13], companding [14], [3], Clipping [15], Palm Clipping [16], Peak Insertion (PI) [17] and Tone reservation [18]. In [19], [20], the authors compare some PAPR reduction methods in terms of PAPR and BER.…”

Section: Introductionmentioning

confidence: 99%

A New Algorithm to Reduce Peak to Average Power Ratio in OFDM Systems based on BCH Codes

Bakkas¹,

Benkhouya²,

Chaayra³

et al. 2021

IJACSA

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Orthogonal Frequency Division Multiplexing (OFDM) has a great peak-to-average power ratio (PAPR). This will reduce the performance of the power amplifier (PA). Therefore, PAPR deteriorates the overall energy efficiency of an OFDM system. Peak Insertion (PI) is one of the most commonly used methods to reduce PAPR, it gives the best reduction in PAPR. Therefore, it causes a strong degradation in Bit Error Rate (BER). To solve this problem, we propose a new algorithm called BCB-OFDM based on Bose Chaudhuri Hocquenghem Codes (BCHs) and PI. BCB is implemented in OFDM system with Quadrature Amplitude Modulation (QAM) and two coding rates 1/2 and 1/4 over an Additive White Gaussian Noise (AWGN) channel. Simulation results show that the BCB is very interesting and achieve a good value in terms of PAPR reduction with keeping good performance compared with PI and normal OFDM. In addition, BCB algorithm is simple, robust, and leaves no requirement side information with more flexibility to choose between PAPR reduction and BER performances.

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Improved Selected Mapping Technique for Reduction of PAPR in OFDM Systems

Cited by 3 publications

References 18 publications

An Improved PAPR Reduction Scheme using Green OFDM

An Improved PAPR Reduction Scheme using Green OFDM

A Novel Quantum Orthogonal Frequency-Division Multiplexing Transmission Scheme

A New Algorithm to Reduce Peak to Average Power Ratio in OFDM Systems based on BCH Codes

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