Author/Authors :
Elghafar، نويسنده , , Samir Abd and Diab، نويسنده , , Salaheldin M. and Sallam، نويسنده , , Bassiouny M. and Hassan، نويسنده , , Emad S. and Shokair، نويسنده , , Mona and Al-Nauimy، نويسنده , , Waleed and Dessouky، نويسنده , , Moawad I. and El-Rabaie، نويسنده , , El-Sayed M. and Alshebeili، نويسنده , , Saleh and Abd El-Samie، نويسنده , , Fathi E. Abd El-Samie، نويسنده ,
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
