A class of block codes with expanded signal-sets for PSK-modulation

Author

Isaksson, Magnus ; Zetterberg, Lars H.

Author_Institution

R. Inst. of Technol., Stockholm, Sweden

fYear

1988

fDate

13-17 Jun 1988

Firstpage

181

Lastpage

184

Abstract

The authors deal with a block coding approach to channel codes in which the redundancy is obtained not from parity symbols, but by expanding the channel signal constellation. Such codes are well suited for the bandlimited channel because the data rate and the bandwidth are unaffected. For transmission of m information bits/symbol they use the signal set 2^m+1-PSK. The signal set is given the structure of the finite field GF(2^m+1). The code is defined by a square generator matrix over the finite field. A good subclass of codes is obtained by giving the matrix a cyclic structure. A computer search results in codes with coding gains of the order of 0.2-6.0 dB over uncoded modulation for code lengths up to 12 symbols

Keywords

codes; phase shift keying; redundancy; telecommunication channels; 0.2 to 6 dB; PSK-modulation; bandlimited channel; block codes; channel codes; channel signal constellation; coding gains; cyclic structure; expanded signal-sets; redundancy; square generator matrix; uncoded modulation; AWGN; Bandwidth; Block codes; Constellation diagram; Galois fields; Gaussian noise; Modulation coding; Paper technology; Phase shift keying; Quadrature amplitude modulation;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrotechnics, 1988. Conference Proceedings on Area Communication, EUROCON 88., 8th European Conference on

Conference_Location

Stockholm

Type

conf

DOI

10.1109/EURCON.1988.11135

Filename

11135