Performance analysis of the Wavelet-OFDM new scheme in AWGN channel

Ghaith, Alaa; Mrad, Hiba; Alaeddine, Ali

doi:10.1109/iccitechnology.2013.6579554

Cited by 13 publications

(6 citation statements)

References 4 publications

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“…However, the limitation of this approach is that we still use the signal pulse shaping depending on the IFFT/FFT transform for estimating the pulse shape and the band filtering. Hence, researchers in [18] proposed an alternative OFDM-based method by replacing the FFT algorithm with the wavelet transform.…”

Section: Related Workmentioning

confidence: 99%

OFDM synchronization system using wavelet transform for symbol rate detection

et al. 2020

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In radio communications, using wavelet signal analysis to recover the symbol rate timing clock of orthogonal frequency-division multiplexing (OFDM) is a new approach that can tolerate signal distortion from intersymbol interference (ISI) and intercarrier interference of encoding digital data on multiple carrier frequencies. Typically, the reception synchronization with wavelet signal analysis in OFDM can improve the performance over the fourier transform-based OFDM. However, a synchronization procedure that is stable against distortion and noise is essential to diminish the symbol synchronization establishment and operation sampling period. In this paper, we propose an OFDM synchronization system and analyze the impact of the wavelet denoise procedure on the OFDM system, which extracts the symbol rate of the OFDM frame. The evaluation results show that the proposed system can optimize the frequency window size to enable an efficient timing and frequency offset estimation with high and stable performance in terms of bit error rate (BER) and Frame Error Rate (FER) especially when the value of EbN0 (a normalized signal-to-noise ratio SNR measure) is greater than 8 dB, thanks to the wavelet transform.

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Section: Related Workmentioning

confidence: 99%

OFDM synchronization system using wavelet transform for symbol rate detection

et al. 2020

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“…As mentioned before, FFT based OFDM system divides the bandwidth into subcarriers. These subcarriers are orthogonal and overlapped but in wavelet based OFDM system the principle is different; the data is transmitted depending on multiplexing fundamentals therefore each subcarrier will have its own time and frequency resolution [17] and the system will depend on filter bank instead ofFourier transform to generate the orthogonal subcarriers [18]. The block diagram of wavelet based OFDM system is shown in Figure 3.…”

Section: Wavelet Based Ofdm Systemmentioning

confidence: 99%

Performance investigation of WOFDM for 5G wireless networks

Ghanim¹

2019

IJECE

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<p>Nowadays, emerging wireless networks scenarios such as the proposed systems for 5G is discussed widely with diverse requirements. Orthogonal Frequency Division Multiplexing (OFDM) is a conservative proposal which is used to build 5G WOFDM system (Wavelet OFDM system). The simulation of the system is initialized with BPSK then with QAM and 64-QAM the system is improved by increasing the number of levels of Discrete Wavelet Transform to five levels and finally compared with original system to prove that the it is convenient for 5G Wireless networks.</p>

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“…Many authors use computer simulations to analyze and compare FFT and DWT based OFDM system using different modulation techniques such as M-PSK and M-QAM considering to three distortion channels: AWGN-additive white Gaussian noise (Dawalbait and Bilal, 2016;Shadab and Madhav, 2015;Oksuz et al, 2016;Parihar and Singh, 2017;Chauhan and Tyagi, 2014;Goyani and Shah, 2015;Ghaith et al, 2013;Gupta and Tiwari. 2013;Kattoush, Mahmoudb and Nihadc, 2010.…”

Section: Orthogonal Frequency Multicarrier Modulation Techniquesmentioning

confidence: 99%

The Manchester Coded Data Based OFDM (MCOFDM)

Mazić

Bonković

Bjelopera

2018

ToMS

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This paper shows a new DWT based OFDM algorithm which significantly simplifies signal processing in the transmitter and receiver. Unlike conventional DWT based OFDM a new algorithm does not use digital modulation of subcarriers either IDWT in the transmitter. The output signal from the transmitter is formed by summing the signals on the individual subchannels, encoded with the Manchester code and sampled at appropriate frequencies. In the receiver, the channel signal and data is reconstructed using DWT and Haar wavelet. Although the signal transmission is achieved using amplitude modulation, the paper shows that BER performance is commensurable to BPSK or DMWT based OFDM in the presence of AWGN.

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Performance analysis of the Wavelet-OFDM new scheme in AWGN channel

Cited by 13 publications

References 4 publications

OFDM synchronization system using wavelet transform for symbol rate detection

OFDM synchronization system using wavelet transform for symbol rate detection

Performance investigation of WOFDM for 5G wireless networks

The Manchester Coded Data Based OFDM (MCOFDM)

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