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...
| Main Authors: | , |
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| Format: | Proceeding Paper |
| Language: | English |
| Published: |
2007
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/839/ http://irep.iium.edu.my/839/1/paper_conf1.pdf |
| _version_ | 1848775766142091264 |
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| author | Abdullah, Khaizuran M. Hussain, Zahir |
| author_facet | Abdullah, Khaizuran M. Hussain, Zahir |
| author_sort | Abdullah, Khaizuran |
| building | IIUM Repository |
| collection | Online Access |
| 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. |
| first_indexed | 2025-11-14T14:19:24Z |
| format | Proceeding Paper |
| id | iium-839 |
| institution | International Islamic University Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T14:19:24Z |
| publishDate | 2007 |
| recordtype | eprints |
| repository_type | Digital Repository |
| 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 Proceeding Paper 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 |
| 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 |
| title | 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_short | 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 |
| topic | TK5101 Telecommunication. Including telegraphy, radio, radar, television |
| url | http://irep.iium.edu.my/839/ http://irep.iium.edu.my/839/ http://irep.iium.edu.my/839/1/paper_conf1.pdf |