Enhancement the Performance of OFDM based on Multiwavelets Using Turbo Codes

Dawood, Sameer A.; Malek, F.; Anuar, M. S.; Rahim, HA

doi:10.12928/telkomnika.v13i4.1846

Cited by 4 publications

(3 citation statements)

References 11 publications

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“…A new approach system of OFDM based on Discrete Multiwavelet Transform (DMWT) and Critical-Sampling Transform (CST) as a turbo codes effectiveness and how useful of providing good BER performance at higher data is discussed by Dawood et al (2015) with their teams Kattoush et al (2013), Anusuya et al (2013) proposes DMWT based orthogonal modulator. By DMWT implementing, a good spectral efficiency and BER can be achieved compare to FFT and DWT.…”

Section: Introductionmentioning

confidence: 99%

Modeling of Water Quality Parameters using Data-Driven Models, A Case Study Abo-Ziriq Marsh in South of Iraq

Al-Mukhtar¹,

Al-Yaseen²

2019

J. Eng. Appl. Sci.

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The performance of Discrete Wavelet and Fast Fourier Transform (DWT and FFT) is examined in Orthogonal Frequency-Division Multiplexing (OFDM) that uses in the Long-Term Evolution (LTE) system. The DWT has some advantages compared to FFT which enables the operation of a time frequency range that allows accuracy and optimal flexibility. Wavelet has been implemented satisfactorily in the all areas of systems that depend on wireless communication of LTE utilization. In this resaerch, the performance of the LTE system was improved using multiple antenna technology via. the Riley channel. LTE-Based wavelets outperform LTE-based FFT in all scenarios. The Bit Error Rate (BER) is an important thing with the Signal to Noise Ratio (SNR) is founded for the proposed and general system and then a suitable comparison is made between them when using the feed forward neural network equalizer instead of the traditional one. The proposed structure aim to improve the LTE system performance under different channel conditions, so that, a high data rate and a low BER are satisfied. All LTE system Models are employed in MATLAB 2017b to have the ability of varying the system parameters like channel types, channel's parameters, SNR and BER.

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Section: Introductionmentioning

confidence: 99%

Modeling of Water Quality Parameters using Data-Driven Models, A Case Study Abo-Ziriq Marsh in South of Iraq

Al-Mukhtar¹,

Al-Yaseen²

2019

J. Eng. Appl. Sci.

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“…However, for more contribution Bit-Error-Rate (BER) performance for proposed problem mast be simulated [2830]. Findlay, Message Authentication Code (MAC) hash function are a suitable method for data authentication during false data infection [31][32][33][34]. In this paper, an enclosure including transmission conductor is studied during IEMI.…”

Section: Introductionmentioning

confidence: 99%

Presentation of an Algorithm for Secure Data Transmission based on Optimal Route Selection during Electromagnetic Interference Occurrence

Mohammadi

Amirani

Faghihi

2018

IJECE

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This paper proposes a comprehensive algorithm for secure data transmission via communication conductors considering route optimization, shielding and data authentication. Using of appropriate coding method causes more efficiency for suggested algorithm during electromagnetic field attack occurrence. In this paper, MOM simulation via FIKO software is done for field distribution. Due to critical situation of malfunctioning of data transferring, appropriate shield is designed and examined by shielding effectiveness (SE) criterion resulted of MOM simulation; finally to achieve reliability of data security, MAC hash function is used for space with field attack probability, turbo code is employed.

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“…However, its sensibility to inter carrier interference ICI is a real obstacle that prevents its use. Although the very large number of works dealing with the problem of synchronization [29][30][31], the OFDM still requires additional research to overcome this disadvantage which penalizes the use of its capabilities in the fifth generation. Due to foregoing problem, our contribution in this paper focalizes on the problem of ICI.…”

mentioning

confidence: 99%

Blind frequency offset estimator for OFDM systems

2019

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Orthogonal Frequency Division Multiplexing (OFDM) is of great interest for the development of the fifth-generation technology. It is the cornerstone of Multiple-input multiple-output (MIMO) systems.Even though inter carrier interference (ICI) and inter symbol interference (ISI) have been processed for the fourth-generation standards, they still present a huge problem for the fifth-generation standards. This paper explores the tradeoff between the length of the cyclic prefix and the performances of the OFDM system. It also studies the effect of carrier frequency offset (CFO) on OFDM systems. A blind frequency offset estimator that uses the correlations between the remodulated sequence in the receiver side and the conventional received symbol is presented and a closed form solution is derived. The proposed estimator is derived under short interval when the correlation is high, so it has low computational complexity. Lin and Beek's estimators are used for comparison. Simulations demonstrate the effectiveness of the proposed estimator under Rayleigh fading channel.

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Enhancement the Performance of OFDM based on Multiwavelets Using Turbo Codes

Abstract: Abstract

Cited by 4 publications

References 11 publications

Modeling of Water Quality Parameters using Data-Driven Models, A Case Study Abo-Ziriq Marsh in South of Iraq

Modeling of Water Quality Parameters using Data-Driven Models, A Case Study Abo-Ziriq Marsh in South of Iraq

Presentation of an Algorithm for Secure Data Transmission based on Optimal Route Selection during Electromagnetic Interference Occurrence

Blind frequency offset estimator for OFDM systems

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