Open Access Open Access  Restricted Access Subscription Access
Open Access Open Access Open Access  Restricted Access Restricted Access Subscription Access

Wavelet Transform for Performance Enhancement of Discrete Multi-Tone Systems


Affiliations
1 Jazan University, Saudi Arabia
2 Helwan University, Cairo, Egypt
3 Menoufia University, Menou, Egypt
4 Menoufia University, Egypt
5 Dept. Electronics and Electrical Communications, Menoufia University, Egypt
6 Menoufia University, Menouf, Egypt
     

   Subscribe/Renew Journal


This paper presents a new implementation of Discrete Multi-Tone (DMT) systems based on the Discrete Wavelet Transform (DWT) and time-domain equalization to maximize the bit rate. The objective of the proposed DWT-DMT system is to make use of the sub-band decomposition property of the DWT to reduce the channel effects on the transmitted signals. The mathematical model of the Time-domain Equalizer (TEQ) utilized in this paper is presented. This equalizer is tested in the Fast Fourier Transform Discrete Multi-Tone (FFT-DMT) system, and in the proposed DWT-DMT system for comparison. Simulation experiments shows that the performance of the proposed DWT-DMT system with the TEQ filter bank is better than that of the FFT-DMT system with the TEQ filter bank over the eight standard Carrier Serving Area (CSA) loops. The results show that employing the TEQ filter bank in the proposed DWT-DMT system can achieve high bit rates ranging from 2.899 Mbps to 5.369 Mbps.


Keywords

DMT System, DWT, FFT, TEQ.
User
Subscription Login to verify subscription
Notifications
Font Size


  • Wavelet Transform for Performance Enhancement of Discrete Multi-Tone Systems

Abstract Views: 289  |  PDF Views: 8

Authors

Samir Abd Elghafar
Jazan University, Saudi Arabia
Salaheldin M. Diab
Helwan University, Cairo, Egypt
Bassiouny M. Sallam
Menoufia University, Menou, Egypt
S. El-Rabaie
Menoufia University, Egypt
Moawad I. Dessouky
Dept. Electronics and Electrical Communications, Menoufia University, Egypt
Fathi E. Abd El-Samie
Menoufia University, Menouf, Egypt

Abstract


This paper presents a new implementation of Discrete Multi-Tone (DMT) systems based on the Discrete Wavelet Transform (DWT) and time-domain equalization to maximize the bit rate. The objective of the proposed DWT-DMT system is to make use of the sub-band decomposition property of the DWT to reduce the channel effects on the transmitted signals. The mathematical model of the Time-domain Equalizer (TEQ) utilized in this paper is presented. This equalizer is tested in the Fast Fourier Transform Discrete Multi-Tone (FFT-DMT) system, and in the proposed DWT-DMT system for comparison. Simulation experiments shows that the performance of the proposed DWT-DMT system with the TEQ filter bank is better than that of the FFT-DMT system with the TEQ filter bank over the eight standard Carrier Serving Area (CSA) loops. The results show that employing the TEQ filter bank in the proposed DWT-DMT system can achieve high bit rates ranging from 2.899 Mbps to 5.369 Mbps.


Keywords


DMT System, DWT, FFT, TEQ.