Title :
Application of shaping to discrete multitone modulation
Author :
Zogakis, T.N. ; Cioffi, J.M.
Author_Institution :
Inf. Syst. Lab., Stanford Univ., CA, USA
fDate :
28 Nov- 2 Dec 1994
Abstract :
The application of shaping to discrete multitone (DMT) modulation is investigated as a means for obtaining additional gain in applications requiring high-performance transceivers. DMT modulation differs from single-carrier modulation in that a number of parallel tones are used for transmission and the constellation sizes and transmit power vary across these tones. Shaping gains ranging from 0.5-1.0 dB are derived through simple extensions of existing single-carrier shaping techniques. Examples for the asymmetric digital subscriber line service illustrate the gains achieved by the DMT shaping techniques
Keywords :
digital communication; subscriber loops; trellis coded modulation; DMT modulation; asymmetric digital subscriber line service; constellation sizes; discrete multitone modulation; gain; high-performance transceivers; parallel tones; shaping; transmit power; Amplitude modulation; Communication channels; Constellation diagram; DSL; Information systems; Laboratories; Lattices; OFDM modulation; Quadrature amplitude modulation; Transceivers;
Conference_Titel :
Global Telecommunications Conference, 1994. GLOBECOM '94. Communications: The Global Bridge., IEEE
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-1820-X
DOI :
10.1109/GLOCOM.1994.513199
