Improved super-orthogonal codes through generalized rotations

Author

Janani, Mohammad ; Hedayat, Ahmadreza ; Nosratinia, Aria

Author_Institution

Multimedia Commun. Lab., Texas Univ., Richardson, TX, USA

Volume

6

fYear

2004

fDate

29 Nov.-3 Dec. 2004

Firstpage

3773

Abstract

Orthogonal space-time block codes (OSTBC) enjoy simple decoding, but have limited coding gain, if any. By concatenating OSTBC with an outer trellis, simple and powerful codes have been constructed, known as super-orthogonal codes or STB-TCM. In this work, we generalize these codes by exploring new code supersets, through mappings that do not induce any instantaneous modulation constellation expansion. By finding new mappings and establishing the properties of the resulting set partitions, we provide design guidelines for the labeling of the generalized code trellises. Simulations demonstrate significant coding gains resulting from our codes.

Keywords

block codes; set theory; space-time codes; trellis coded modulation; OSTBC; STB-TCM; code mappings; code supersets; coding gain; design guidelines; generalized code trellis labeling; generalized rotations; modulation constellation expansion; orthogonal space-time block codes; outer trellis concatenated OSTBC; set partitions; simulations; super-orthogonal codes; Block codes; Convolutional codes; Decoding; Electronic mail; Guidelines; Laboratories; Modulation coding; Multimedia communication; Signal mapping; Space time codes;

fLanguage

English

Publisher

ieee

Conference_Titel

Global Telecommunications Conference, 2004. GLOBECOM '04. IEEE

Print_ISBN

0-7803-8794-5

Type

conf

DOI

10.1109/GLOCOM.2004.1379074

Filename

1379074