Combined coding and shaping over a multitone channel

Author

Khandani, A.K. ; Kabal, P. ; Leib, H.

Author_Institution

McGill Univ., Montreal, Que., Canada

fYear

1991

fDate

2-5 Dec 1991

Firstpage

1182

Abstract

The idea of combined shaping and coding of a signal constellation over a multitone channel is introduced. Two joint optimization methods, partly integer, for distributing the rate and the energy are introduced. In the first method, the minimum distance to noise ratio (protection) along all the dimensions is the same. The proposed method maximizes this protection. In the second method, this restriction is relaxed. The second method outperforms the first. As part of the calculations, a closed-form formula has been found for the weight distribution of the scaled E₈ lattice

Keywords

encoding; modulation; optimisation; telecommunication channels; closed-form formula; combined coding/shaping; joint optimization methods; minimum distance to noise ratio; multitone channel; scaled E₈ lattice; signal constellation; weight distribution; Additive noise; Business; Constellation diagram; Error probability; Gaussian noise; Lattices; Noise shaping; Optimization methods; Protection; Signal to noise ratio;

fLanguage

English

Publisher

ieee

Conference_Titel

Global Telecommunications Conference, 1991. GLOBECOM '91. 'Countdown to the New Millennium. Featuring a Mini-Theme on: Personal Communications Services

Conference_Location

Phoenix, AZ

Print_ISBN

0-87942-697-7

Type

conf

DOI

10.1109/GLOCOM.1991.188560

Filename

188560