Performance of fourier-based and wavelet-based OFDM for DVB-T systems

Performance of fourier-based and wavelet-based OFDM for DVB-T systems

We present a comparative study on Fourier-based OFDM (FFT-OFDM) and wavelet-based OFDM (DWT-OFDM)in DVB-T system (DWT being the discrete wavelet transform). We found that the DWT-OFDM outperforms FFT-OFDM in AWGN and Rayleigh fading channels. For AWGN channel, the gain in term of energy per bit to n...

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Main Authors: Abdullah, Khaizuran, M. Hussain, Zahir
Format: Conference or Workshop Item
Language:English
Published: 2007
Subjects:
TK5101 Telecommunication. Including telegraphy, radio, radar, television
Online Access:http://irep.iium.edu.my/839/
http://irep.iium.edu.my/839/
http://irep.iium.edu.my/839/1/paper_conf1.pdf
id iium-839
recordtype eprints
spelling iium-8392011-08-01T03:36:07Z http://irep.iium.edu.my/839/ Performance of fourier-based and wavelet-based OFDM for DVB-T systems Abdullah, Khaizuran M. Hussain, Zahir TK5101 Telecommunication. Including telegraphy, radio, radar, television We present a comparative study on Fourier-based OFDM (FFT-OFDM) and wavelet-based OFDM (DWT-OFDM)in DVB-T system (DWT being the discrete wavelet transform). We found that the DWT-OFDM outperforms FFT-OFDM in AWGN and Rayleigh fading channels. For AWGN channel, the gain in term of energy per bit to noise ratio Eb/No was improved by about 5 dB when the system used Haar wavelet compared to FFT-OFDM with a cyclic prefix (CP) of 1/4-th the total OFDM symbol period, for the same BER of 0.001. Other members of Daubechies families such as db8, db16 and db32 also outperformed by the gains of 7 dB, 10 dB and 11 dB, respectively, at the same BER. We also considered Daubechies wavelet db32 and FFT-OFDM with a CP of 1/4-th the total OFDM symbol period in the presence of narrowband interference. In terms of Eb/No, DWT-OFDM surpassed FFT-OFDM by 9 dB at 0.02 BER. It is also shown that the DWT-OFDM of Daubechies db8 and db1 outperform FFT-OFDM in Rayleigh fading, both in multipath flat fading and multipath frequency selective fading. The DWT-OFDM’s with db8 and Haar outperformed FFT-OFDM by 7 and 2 dB, respectively, at BER of 0.01 in the flat fading channel. In addition, DWT-OFDM and FFT-OFDM showed about the same performance below 10 dB of Eb/No in frequency selective fading. However, the wavelet-based OFDM showed significant improvement of performance at higher than 10 dB of Eb/No. 2007-12-05 Conference or Workshop Item PeerReviewed application/pdf en http://irep.iium.edu.my/839/1/paper_conf1.pdf Abdullah, Khaizuran and M. Hussain, Zahir (2007) Performance of fourier-based and wavelet-based OFDM for DVB-T systems. In: Australasian Telecommunication Networks and Applications Conference (ATNAC), 2nd to 5th of December, 2007, Christchurch, New Zealand. http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=4665248&tag=1
repository_type Digital Repository
institution_category Local University
institution International Islamic University Malaysia
building IIUM Repository
collection Online Access
language English
topic TK5101 Telecommunication. Including telegraphy, radio, radar, television
spellingShingle TK5101 Telecommunication. Including telegraphy, radio, radar, television
Abdullah, Khaizuran
M. Hussain, Zahir
Performance of fourier-based and wavelet-based OFDM for DVB-T systems
description We present a comparative study on Fourier-based OFDM (FFT-OFDM) and wavelet-based OFDM (DWT-OFDM)in DVB-T system (DWT being the discrete wavelet transform). We found that the DWT-OFDM outperforms FFT-OFDM in AWGN and Rayleigh fading channels. For AWGN channel, the gain in term of energy per bit to noise ratio Eb/No was improved by about 5 dB when the system used Haar wavelet compared to FFT-OFDM with a cyclic prefix (CP) of 1/4-th the total OFDM symbol period, for the same BER of 0.001. Other members of Daubechies families such as db8, db16 and db32 also outperformed by the gains of 7 dB, 10 dB and 11 dB, respectively, at the same BER. We also considered Daubechies wavelet db32 and FFT-OFDM with a CP of 1/4-th the total OFDM symbol period in the presence of narrowband interference. In terms of Eb/No, DWT-OFDM surpassed FFT-OFDM by 9 dB at 0.02 BER. It is also shown that the DWT-OFDM of Daubechies db8 and db1 outperform FFT-OFDM in Rayleigh fading, both in multipath flat fading and multipath frequency selective fading. The DWT-OFDM’s with db8 and Haar outperformed FFT-OFDM by 7 and 2 dB, respectively, at BER of 0.01 in the flat fading channel. In addition, DWT-OFDM and FFT-OFDM showed about the same performance below 10 dB of Eb/No in frequency selective fading. However, the wavelet-based OFDM showed significant improvement of performance at higher than 10 dB of Eb/No.
format Conference or Workshop Item
author Abdullah, Khaizuran
M. Hussain, Zahir
author_facet Abdullah, Khaizuran
M. Hussain, Zahir
author_sort Abdullah, Khaizuran
title Performance of fourier-based and wavelet-based OFDM for DVB-T systems
title_short Performance of fourier-based and wavelet-based OFDM for DVB-T systems
title_full Performance of fourier-based and wavelet-based OFDM for DVB-T systems
title_fullStr Performance of fourier-based and wavelet-based OFDM for DVB-T systems
title_full_unstemmed Performance of fourier-based and wavelet-based OFDM for DVB-T systems
title_sort performance of fourier-based and wavelet-based ofdm for dvb-t systems
publishDate 2007
url http://irep.iium.edu.my/839/
http://irep.iium.edu.my/839/
http://irep.iium.edu.my/839/1/paper_conf1.pdf
first_indexed 2023-09-18T20:08:01Z
last_indexed 2023-09-18T20:08:01Z
_version_ 1777407289547816960

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