Utilization of discrete transforms to conquer the problems of multi-tone systems |
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| Authors: | Samir Abd Elghafar Salaheldin M Diab Bassiouny M Sallam Emad S Hassan Mona Shokair Waleed Al-Nauimy Moawad I Dessouky El-Sayed M El-Rabaie Saleh Alshebeili Fathi E Abd El-Samie |
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| Institution: | 1. Department of Electronics and Electrical Communications, Faculty of Electronic Engineering, Menoufia University, Menouf 32952, Egypt;2. Department of Electrical Engineering, Jazan University, Jazan, Saudi Arabia;3. Department of Electrical Engineering and Electronics, The University of Liverpool, Liverpool L69 3GJ, UK;4. Electrical Engineering Department, KACST-TIC in Radio Frequency and Photonics for the e-Society (RFTONICS), King Saud University, Riyadh, Saudi Arabia;5. KACST-TIC in Radio Frequency and Photonics for the e-Society (RFTONICS), King Saud University, Riyadh, Saudi Arabia |
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| Abstract: | This paper presents a new implementation of discrete multi-tone (DMT) systems based on different discrete transforms that include the discrete sine transform (DST), discrete cosine transform (DCT), and discrete wavelet transform (DWT). The implementation also considers time-domain equalization to mitigate channel distortion. Compared to the fast Fourier transform discrete multi-tone (FFT-DMT) system, the proposed implementations have an advantage in that their energy-compaction property helps in reducing the channel effects. The performance of the DST-DMT, DCT-DMT, DWT-DMT, and FFT-DMT systems, employing a time-domain equalizer (TEQ), is investigated in the paper. It has been demonstrated by computer simulations that the proposed implementations outperform the FFT-DMT system and that the utilization of the TEQ can lead to higher bit rates |
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