JSE_V2_N3_RP1 Samah A.B. Mustafa Velar Hikmat Journal on Software Engineering 2230 – 7168 2 3 1 5 discrete multi tone, discrete wavelet transform, extensive simulation This paper investigates multi-carrier wire line communication system, focusing on the physical layer in discrete multi-tone DMT modulation system. DMT system has received much attention in modern communication technology and is finding attractive applications. The paper introduces and discusses the discrete wavelet transform DWT-based DMT. Extensive simulation has been applied to compare the performance of the new scheme with that of the traditional one. It has been found that the performance over AWGN channel can be enhanced also the transmission efficiency can be enlarged using DWT. January - March 2008 Copyright © 2008 i-manager publications. All rights reserved. i-manager Publications http://www.imanagerpublications.com/Article.aspx?ArticleId=491