Simple nonorthogonal 4×4 space-time block codes with rate one and full diversity

Author

Shi, Qinghua ; Zhang, Q.T.

Author_Institution

Dept. of Electron. Eng., City Univ. of Hong Kong, Kowloon, China

Volume

4

fYear

2004

fDate

26-29 Sept. 2004

Firstpage

2449

Abstract

In this paper, we present two 4-by-4 nonorthogonal space-time block codes (STBCs) of rate one and full diversity. Constructed via a very simple circulant vector-to-matrix mapping, they are obtained by using a genetic algorithm (GA)-based search procedure to minimize the union bound of average block error probability. The resulting STBCs are comparable to the improved quasi-orthogonal STBC but outperform other counterparts in terms of error performance while retaining the advantages of encoding simplicity and least envelope variations of transmitted signals.

Keywords

block codes; diversity reception; error statistics; genetic algorithms; space-time codes; GA-based search procedure; average block error probability union bound minimization; block codes; circulant vector-to-matrix mapping; full diversity STBC; genetic algorithm; nonorthogonal space-time codes; rate one STBC; transmitted signal envelope variation minimization; Block codes; Encoding; Error probability; Genetic algorithms; Linearity; MIMO; Maximum likelihood decoding; Quadrature phase shift keying; Solids; Upper bound;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 2004. VTC2004-Fall. 2004 IEEE 60th

ISSN

1090-3038

Print_ISBN

0-7803-8521-7

Type

conf

DOI

10.1109/VETECF.2004.1400493

Filename

1400493