Title :
Efficient implementation of discrete wavelet multitone in DSL communications
Author :
Couturier-Doux, V. ; Lienard, J. ; Conq, B. ; Gallay, P.
Author_Institution :
DIH/OCF Lab., Meylan, France
Abstract :
The improvement of DSL technologies has led us to study of new multicarrier modulation techniques such as filtered multitone (FMT) or discrete wavelet multitone (DWMT), as alternatives of discrete multitone (DMT) and carrierless amplitude phase modulation (CAP). We first introduce the basics of the DWMT modulation as a multicarrier evolution with overlapping frames. Then this modulation is detailed and a new fast algorithm presented to perform it. Finally we study the performances of a DWMT transmission scheme in a VDSL environment, with the usual perturbations induced by the wire line as AWGN and radio interferences (RFI).
Keywords :
channel bank filters; digital subscriber lines; discrete wavelet transforms; modulation; CMFBs; DSL communications; DSL technologies; VDSL environment; carrierless amplitude phase modulation; discrete multitone; discrete wavelet multitone modulation; discrete wavelet multitone transmission scheme; filtered multitone; multicarrier modulation techniques; twisted pair lines; DSL; Discrete wavelet transforms; Filter bank; Finite impulse response filter; Interference; Laboratories; OFDM modulation; Phase modulation; Spectral shape; Wire;
Conference_Titel :
Video/Image Processing and Multimedia Communications, 2003. 4th EURASIP Conference focused on
Print_ISBN :
953-184-054-7
DOI :
10.1109/VIPMC.2003.1220493
