Multilevel coding: aspects from information theory

Author

Fischer, Robert F H ; Huber, Johannes B. ; Wachsmann, Udo

Author_Institution

Lehrstuhl fur Nachrichtentech., Erlangen-Nurnberg Univ., Germany

fYear

1996

fDate

18-22 Nov 1996

Firstpage

26

Lastpage

30

Abstract

Important issues for coded modulation in practice are derived from information theoretic parameters. Optimality of multilevel coding as well as various rules to assign rates to the individual component codes are discussed. Moreover, suitable dimensionality of the signal constellation used for coding is considered. All phenomena predicted from information theory are confirmed by simulation results. Finally, optimum combination of coding and signal shaping is derived. Noticeable shaping gains are only achievable if presented rules are taken into account

Keywords

amplitude shift keying; block codes; channel capacity; convolutional codes; information theory; modulation coding; quadrature amplitude modulation; ASK; QAM; block codes; coded modulation; convolutional codes; equivalent channels; individual component codes; information theory; multilevel coding; optimality; random coding; rate assignment; signal constellation dimensionality; signal shaping; simulation results; Block codes; Constellation diagram; Convolutional codes; Decoding; Information theory; Modulation coding; Multidimensional systems; Predictive models; Signal mapping; World Wide Web;

fLanguage

English

Publisher

ieee

Conference_Titel

Global Telecommunications Conference, 1996. GLOBECOM '96. 'Communications: The Key to Global Prosperity

Conference_Location

London

Print_ISBN

0-7803-3336-5

Type

conf

DOI

10.1109/GLOCOM.1996.586754

Filename

586754