Title :
Analysis of a concatenated coding scheme for a discrete multitone modulation system
Author :
Zogakis, T.N. ; Aslanis, J.T., Jr. ; Cioffi, J.M.
Author_Institution :
Inf. Syst. Lab., Stanford Univ., CA, USA
Abstract :
Discrete multitone (DMT) modulation partitions a band-limited transmission channel into a number of independent, parallel subchannels and maximizes performance by sending more bits over those subchannels with large signal-to-noise ratios. The combination of DMT modulation with powerful coding techniques results in a high-performance transceiver that may be used in a variety of high-speed applications. This study investigates the performance of a concatenated coding scheme consisting of an inner trellis code and outer Reed-Solomon code, when applied to a DMT system. Theoretical coding gain projections are derived for several band-limited channels that are representative of the asymmetric digital subscriber line (ADSL) application. Some laboratory test results obtained from a DMT prototype for ADSL are also presented
Keywords :
Reed-Solomon codes; concatenated codes; modulation; subscriber loops; telecommunication channels; transceivers; trellis codes; ADSL; DMT modulation; DMT system; asymmetric digital subscriber line; band-limited transmission channel; coding gain; concatenated coding; discrete multitone modulation system; high-performance transceiver; high-speed applications; inner trellis code; laboratory test results; outer Reed-Solomon code; parallel subchannels; signal-to-noise ratios; Concatenated codes; Convolutional codes; DSL; Laboratories; Modulation coding; OFDM modulation; Reed-Solomon codes; Signal to noise ratio; Testing; Transceivers;
Conference_Titel :
Military Communications Conference, 1994. MILCOM '94. Conference Record, 1994 IEEE
Conference_Location :
Fort Monmouth, NJ
Print_ISBN :
0-7803-1828-5
DOI :
10.1109/MILCOM.1994.474003
