Efficient Selective Mapping PAPR Reduction Technique

Mhatre, Kavita; Khot, Uday Pandit

doi:10.1016/j.procs.2015.03.117

Cited by 47 publications

(33 citation statements)

References 8 publications

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“…Comparing with the methods in [21] and [22], PAPR reduction performance of the proposed method is better as shown in Table III. The achieving PAPR reduction performance of the proposed method is little better when comparing it with the method in [22].…”

Section: Not Discussedmentioning

confidence: 90%

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PAPR Reduction and Data Security Improvement for OFDM Technique Using Chaos System

Abdullah

Ibada

2019

JCOMSS

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Orthogonal Frequency Division Multiplexing (OFDM) is the most popular multicarrier technique because it produces several advantages such as higher spectral efficiency, high transmission rate, robustness to fading channel and etc.. In this technique, the data is carrying by multiple orthogonal subcarriers. If all subcarriers are adding together with the same phase, it will result high Peak to Average Power Ratio (PAPR). Higher value of PAPR makes low power efficiency, several degradation of performance in the transmit power amplifier and increase the complexity of converters. It is important to decrease PAPR for avoid these problems. Another requirement of the modern communication system is the security of transmission data. All these issues make strong motivation for building algorithm to improve performance and security of OFDM system. In this paper, a proposed algorithm is presented to both reduce PAPR and secure the OFDM signal by generating several Aperiodic PseudoRandom Binary Sequences (APRBSs) using chaos system. The proposed algorithm is scrambling the information by APRBSs, and one sequence is chosen for transmission which has smallest PAPR value. To inform receiver which sequence had been sent, a Side Information (SI) is enclosed with the transmitted sequence. Because SI very important at receiver, convolutional code with Viterbi-Soft Decision Decoding (V-SDD) is used to protect it against channel distortion. Simulation results state the proposed algorithm produces excellent PAPR reduction performance and approximately gives the same Bit Error Rate (BER) of the conventional OFDM system over AWGN and fading channels. In addition to get better performance, the proposed algorithm is providing a good data security due to chaos system. MATLAB program is used to build the proposed OFDM system and get the simulation results.

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Section: Not Discussedmentioning

confidence: 90%

“…6 shows CCDF of OFDM signal when N=128 and M=0 (original),2,4,6, and 8. Table III below shows the comparison between PAPR reduction performance of the proposed algorithm, the method in [21], and the method in [22].…”

Section: ) Papr Reduction Performancementioning

confidence: 99%

PAPR Reduction and Data Security Improvement for OFDM Technique Using Chaos System

Abdullah

Ibada

2019

JCOMSS

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“…In the time-domain, the OFDM signal is generated by summing multiple sinusoidal functions so that the instantaneous power of some samples may be increased much larger than the average power of the signal and may be up to N times of the average power [19]. Therefore, the ratio between the maximum powers of the signal and its average power is defined as the PAPR value of the signal and can be written as [20] PAPR = max |x(n)| 2 E{|x(n)| 2 }…”

Section: Papr In Ofdm Systemmentioning

confidence: 99%

Zero-Padding Techniques in OFDM Systems

Al‐Jawhar¹,

Ramli²,

Taher³

et al. 2018

IJEEI

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Although the OFDM system has been gaining importance in recent years, the high peak to average power ratio is considered the main limitation of the system. The oversampling operation in the frequency-domain plays an essential role in the PAPR calculations precisely. The main purpose of the paper to draw attention to zero-padding methods which are used to oversampled baseband OFDM signals. Moreover, to study the influence of the zero-padding methods on the accuracy of the PAPR calculations, and the spectral spreading of the OFDM signals. Simulation results show that the zero-padding method which inserts the zeros at the center of the baseband OFDM signal is better than the other zero-padding methods in terms of both accuracy PAPR calculations and spectral distribution. Electrical Engineering, College of Engineering at University of AL-Mustansiriya Baghdad, Iraq in 1998. He received his M.S. degree from Faculty of Electrical and Electronic Engineering, University Tun Hussein Onn Malaysia in 2015. He is currently working toward his Ph.D. degree at Faculty of Electrical and Electronic Engineering, University Tun Hussein Onn Malaysia. His research interests mainly focus on signal processing in communication, OFDM, PAPR reduction in Multicarrier system, 5G waveform design, and wireless network. Khairun Nidzam Ramli is a Senior Lecturer of Faculty of Electrical and Electronic Engineering at Universiti Tun Hussein Onn Malaysia (UTHM), Johor, Malaysia. He obtained his BEng in Electronic Engineering from the University of Manchester Institute of Science and Technology (UMIST), United Kingdom, in 1997, and the MEng at the Universiti Kebangsaan Malaysia (UKM), Malaysia, in 2004. He worked within the antennas and applied electromagnetic research group at University of Bradford, United Kingdom since 2007, on a number of projects, concentrating on antenna design and computational electromagnetics. Later, he obtained his PhD for research in electromagnetic analysis using hybrid computational techniques from the University of Bradford in 2011. His typical academic interests include wireless technologies, antennas, electromagnetics, and engineering computing. He is a member of the IEEE. Montadar Abas Taher received the B.

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“…Then, the transmitted complex envelope s(t) in an OFDM system can be represented in equation (1) as defined in (Mhatre and Khot, 2015),…”

Section: Papr In (Ofdm and Wp-ofdm) MCM Schemesmentioning

confidence: 99%

PAPR reduction in wavelet packet-based OFDM using PSO-based PTS technique

Singh

Sood

Pal

2017

IJSCC

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Abstract:In multicarrier modulation scheme, PAPR reduction is the main problem. Techniques mentioned in literature are either too complex or not optimal. In this paper, an attempt has been made to reduce the PAPR of multi carrier modulation with the much less complexity. Wavelet packet-based orthogonal frequency division multiplexing has been employed with orthogonal subcarriers and similarly to OFDM high spectral efficiency is achieved in WP-OFDM by the overlapping subcarriers spectra. Further, PSO-based PTS techniques have been used to reduce the PAPR with much less complexity as compared to conventional optimal PTS technique in which search complexity increases exponentially. The performance of WP-OFDM for PTS technique and PSO-based PTS techniques have been implemented in this paper. Also, the simulation results are obtained shows that the PAPR is reduced significantly with much less search complexity.Keywords: orthogonal frequency division multiplexing; OFDM; peak to average power ratio; PAPR; partial transmit sequence; PTS; multi carrier modulation; MCM; particle swarm optimisation; PSO; wavelet packet-based orthogonal frequency division multiplexing; WP-OFDM. 90 P. Singh et al.Reference to this paper should be made as follows: Singh, P., Pal, S. and Sood, N. (2017) 'PAPR reduction in wavelet packet-based OFDM using PSO-based PTS technique', Int.

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Efficient Selective Mapping PAPR Reduction Technique

Cited by 47 publications

References 8 publications

PAPR Reduction and Data Security Improvement for OFDM Technique Using Chaos System

PAPR Reduction and Data Security Improvement for OFDM Technique Using Chaos System

Zero-Padding Techniques in OFDM Systems

PAPR reduction in wavelet packet-based OFDM using PSO-based PTS technique

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