Performance Evaluation of Modified SLM Technique in OFDM System Using Selected Codeword Shift

Abdullah, Ezmin; Idris, Azlina; Saparon, Azilah

doi:10.1051/matecconf/20167506003

Cited by 6 publications

(5 citation statements)

References 7 publications

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“…Peak windowing, selective mapping (SLM), clipping and filtering, block coding approaches, and others are all mentioned by Shukla [5]. In terms of PAPR reduction, various strategies have been proposed by researchers which is Selective Mapping (SLM) [6][7], Partial Transmit Sequence (PTS) [8][9][10][11] and codeword shifting [12][13][14][15][16][17][18][19]. These are some implementations of the multiple signaling approach and the probabilistic method.…”

Section: Introductionmentioning

confidence: 99%

Performance of PAPR for Different Modulation Technique Using Cluster Scrambling Codeword Shifting Technique in F-OFDM Systems

Aidatul Julia,

Azlina Idris,

Nur Asfarina Idrus

et al. 2023

ARASET

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Filtered-OFDM (F-OFDM) is one of the proposed 5G system candidates. In order to achieve service diversification, it must be able to support a large number of asynchronous subband transmissions. However, the transmitted signal in a multi-carrier transmission system with different subcarriers has a high peak-to-average power ratio (PAPR). Therefore, the main problem of F-OFDM systems is the high PAPR in the system, which leads to poor performance and excessive power consumption due to numerous distortions. This study introduces a technique based on codeword structure manipulation known as Cluster Scrambling Codeword (CSC) to achieve better reduction of PAPR with the evaluation of the performance of QAM and APSK modulation. This is a new formulation of the bit data sequence shifting approach that can reduce PAPR more effectively than the conventional scheme. Simulation results show that CSC with 256 QAM modulation scheme provides a PAPR reduction better than the conventional F-OFDM system.

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Section: Introductionmentioning

confidence: 99%

Performance of PAPR for Different Modulation Technique Using Cluster Scrambling Codeword Shifting Technique in F-OFDM Systems

Aidatul Julia,

Azlina Idris,

Nur Asfarina Idrus

et al. 2023

ARASET

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“…The transmit signal with the lowest PAPR is selected from a group of suitably distinct signals that all reflect the same data. The advantage of SLM is that no distortion is introduced and the number of carriers is independent, while the disadvantage is that side information is introduced and the BER performance is degraded [5][6][7]. Because of this drawback, PAPR has been reduced using a mix of SLM and clipping techniques [8].…”

Section: Introductionmentioning

confidence: 99%

PAPR reduction in CP-OFDM (5G) using hybrid technique

Yusof,

Idris,

Abdullah

2023

Acta Polytech

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The Cyclic Prefix Orthogonal Frequency Division Multiplexing (CP-OFDM) is a 5G multicarrier waveform that offers great data speeds and improvements in spectrum utilisation. The primary CP-OFDM’s weakness is its excessive peak-to-average power ratio (PAPR), which is a characteristic of all multicarrier modulation techniques. We study the application of a hybrid technique approach how to lower the peak to average power ratio (PAPR) in a CP-OFDM system. We also evaluated the outcomes of peak to average power ratio (PAPR) decrease in CP-OFDM, utilising a hybrid technique with Group Codeword Shift (GCS), Median Codeword Shift, Selective Codeword Shift (SCS), and Conventional CP-OFDM. When compared to the non-hybrid technique, the simulation results indicate that the hybrid approach is superior in reducing the peak PAPR by more than 65 percent.

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“…This technique actual transmit signal lowest PAPR is selected from set of sufficiently different signal which all represents the same information [4,9]. The advantage of SLM such as no distortion is introduced and Independent number of carrier while the disadvantage such as side information and degrade BER performance [10][11][12]. Due to this disadvantage the combination of SLM and clipping technique been applied to reduce PAPR [5].…”

Section: Introductionmentioning

confidence: 99%

PAPR Reduction in Cyclic Prefix OFDM (5G) System using Group Codeword Shifting Technique

Azlan Yusof,

Ezmin Abdullah,

Azlina Idris

et al. 2023

ARAM

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Cyclic Prefix Orthogonal Frequency Division Multiplexing (CPOFDM) is a 5G multicarrier waveform that enables high data rates and spectrum efficiency improvements. The primary drawback of CPOFDM is that it has a high peak to average power ratio (PAPR), which is a characteristic of all multicarrier modulation techniques. We study the application of a Group Codeword Shift (GCS) approach to reduce the peak to average power ratio (PAPR) in a CPOFDM system in this article. Additionally, we compared the results of peak to average power ratio (PAPR) reduction with low complexity in CPOFDM using a Group Codeword Shift (GCS) approach, Selective Codeword Shift (SCS), Median Codeword and Conventional CPOFDM.

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Performance Evaluation of Modified SLM Technique in OFDM System Using Selected Codeword Shift

Cited by 6 publications

References 7 publications

Performance of PAPR for Different Modulation Technique Using Cluster Scrambling Codeword Shifting Technique in F-OFDM Systems

Performance of PAPR for Different Modulation Technique Using Cluster Scrambling Codeword Shifting Technique in F-OFDM Systems

PAPR reduction in CP-OFDM (5G) using hybrid technique

PAPR Reduction in Cyclic Prefix OFDM (5G) System using Group Codeword Shifting Technique

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