Performance comparison between DWT-OFDM and FFT-OFDM using time domain zero forcing equalization

Asif, Rameez; Abd‐Alhameed, Raed A.; Oanoh, O.; Dama, Y. A. S.; Migdadi, Hassan; Noars, J. M.; Hussaini, Abubakar Sadiq; Rodriguez, Jonathan

doi:10.1109/temu.2012.6294712

Cited by 20 publications

(11 citation statements)

References 11 publications

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“…A wavelet-based OFDM system that satisfies the impeccable reconstruction property by virtue of their properties of orthonormal bases was proposed. Due to the orthogonal basis and accurate reconstruction of the symbols, the OFDM system incorporating the wavelet transforms, i.e., DWT-OFDM and WPM-OFDM exhibits a significant improvement in BER, was in contrast to Fourier-based OFDM [13,14]. In addition to the wavelets, the BER assessment of the OFDM system was also be improved by using other transforms like discrete cosine transforms (DCT) and discrete sine transforms (DST) in comparison to FFT.…”

Section: Related Workmentioning

confidence: 99%

Performance Analysis of WOFDM‐WiMAX Integrating Diverse Wavelets for 5G Applications

Kansal

Gaba

Sharma

et al. 2021

Wireless Communications and Mobile Computing

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In the 5th generation (5G) and 6th generation (6G) of wireless mobile telecommunication networks, the requests for an elevated data rate with access to stationary as well as portable customers are going to be overwhelming. Mobile worldwide interoperability for microwave access (WiMAX) comes out as a favourable alternative that is intelligibly developed and more matured than wireless fidelity (Wi-Fi). Mobile WiMAX makes use of the orthogonal frequency division multiple access (OFDMA) technology for its two-way communication to enhance the system performance in fading environments making it more suitable for 5G applications. The diverse OFDM forms deliberated here are the fast Fourier transform- (FFT-) based WiMAX and discrete wavelet transform- (DWT-) based WiMAX. The suggested study exhibits the bit error rate (BER) and peak to average power ratio (PAPR) reduction by integrating different wavelet families, i.e., Haar, symlet, coiflet, and reverse biorthogonal over Rayleigh fading channel. The simulation results obtained by MATLAB depicts an improvement in PAPR reduction, and signal to noise ratio (SNR) requirement is also reduced by 6-12 dB by using DWT-incorporated WiMAX at a BER of 10-4.

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Section: Related Workmentioning

confidence: 99%

Performance Analysis of WOFDM‐WiMAX Integrating Diverse Wavelets for 5G Applications

Kansal

Gaba

Sharma

et al. 2021

Wireless Communications and Mobile Computing

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“…After that the cyclic prefix is removed and data is demapped to reconstruct the transmitted data. Equation 2shows the output of the FFT block [11] ( ) ( ) (2)…”

Section: Ofdm Techniquementioning

confidence: 99%

Bit Error Optimization of Coded Ofdm System Over Rayleigh Fading Channel

Jafaar¹,

Abid²

2019

JEASD

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Low Density Parity-Check (LDPC) codes are one of the hottest topics in coding theory today. This code invented in the early 1960's, and it having an amazing comeback in the last few years. In this paper, a scheme is proposed to analyze the performance of LDPC which is considered important rival to turbo codes, Convolutional Code (CC) and Read Solomon (RS) in terms of performance and complexity. This code is utilized in Orthogonal Frequency Division Multiplexing (OFDM) system to evaluate the improvement in the Bit Error Rate (BER) performance of the system. Comparison is done between turbo code and LDPC code through Additive White Gaussian Noise (AWGN) and fading channels. The effect of varying the code rate channel, number of iteration and the code length on the performance of the scheme are also explained.

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“…A MIMO-OFDM system used DWT algorithm is simply implemented by the replacement of the FFT/IFFT with DWT/IDWT blocks and there is no need to add CP due to the properties of Wavelet Transform [1] offers a high suppression sides lobes and provides the analysis of the signal in both time and frequency domain. The Bit Error Rate (BER) according to Signal Noise Ratio (SNR) performance of this method is better than the conventional MIMO-OFDM [2,3]. Bit error rate (BER) is a measure of the number of bit errors that occur in a given number of bit transmissions.…”

Section: Introductionmentioning

confidence: 99%

Wavelet Transform Application Based on Matlab Simulation

Minh¹,

Chen²,

Giap³

et al. 2020

MaP

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Multiple Input Multiple Output (MIMO) and Orthogonal Frequency Division Multiplexing (OFDM) are two combined technologies to provide the spectral efficiency and high data rate required for 4G, 5G wireless systems. Discrete Wavelet Transform (DWT) is presented as an alternative for Fast Fourier Transform (FFT) since there is no necessity for Cyclic Prefix (CP) due to the overlapping properties of DWT. By a simple replacement of the FFT with DWT in MIMO OFDM system, an improvement of performances has been detected which leads to a new system scenario DWT-based MIMO-OFDM. In this thesis, such a system is simulated and the performance of Bit Error Rate (BER) is analyzed to determine the different types of wavelets in various channel condition with different modulations (4, 16, 64 -QAM). Therefore, DWT-based MIMO-OFDM in comparison with DFT-based MIMO-OFDM system was investigated using MATLAB simulation software. And besides, I would like to refer to use Neural Network algorithms to replace Wavelet transform in the next research.

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Performance comparison between DWT-OFDM and FFT-OFDM using time domain zero forcing equalization

Cited by 20 publications

References 11 publications

Performance Analysis of WOFDM‐WiMAX Integrating Diverse Wavelets for 5G Applications

Performance Analysis of WOFDM‐WiMAX Integrating Diverse Wavelets for 5G Applications

Bit Error Optimization of Coded Ofdm System Over Rayleigh Fading Channel

Wavelet Transform Application Based on Matlab Simulation

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