Improved algorithm of space-time block code for DSP implementation

Author

Ge, Yunshan ; Zhao, Yaxing

Author_Institution

Sch. of Electron. Inf. Eng., Tianjin Univ., China

Volume

2

fYear

2002

fDate

26-30 Aug. 2002

Firstpage

1312

Abstract

The paper presents an improved, low power algorithm for the DSP implementation of space-time block codes (STBC) using the previous reported maximum likelihood algorithm (Tarokh, V., et al., IEEE J. Select. Area Commun. vol.17, p.451-60, 1998). The new algorithm arrives at the same decision with less computation and reduced power dissipation. It is easy to using this algorithm in low-rank STBC and hopefully in high-rank STBC for an actual DSP. Based on Tarokh´s algorithm, a more efficient algorithm is developed by utilizing the properties of the constellation signals and decision matrices. In most cases, the new algorithm results in more than 30% reduction in the computational complexity.

Keywords

block codes; computational complexity; diversity reception; matrix algebra; maximum likelihood detection; signal processing; space-time codes; DSP implementation; computational complexity; constellation signals; decision matrices; maximum likelihood detection; power dissipation; space-time block code; transmit diversity; Block codes; Constellation diagram; Digital signal processing; Maximum likelihood decoding; Power dissipation; Power engineering and energy; Power engineering computing; Receiving antennas; Slot antennas; Transmitting antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing, 2002 6th International Conference on

Print_ISBN

0-7803-7488-6

Type

conf

DOI

10.1109/ICOSP.2002.1180033

Filename

1180033