VBLAST-OFDM system with linear constellation precoding

Author

Gui, Bo ; Qu, Daiming

Author_Institution

Dept. of Electron. & Inf. Eng., Huazhong Univ. of Sci. & Technol., Hubei, China

Volume

2

fYear

2004

fDate

17-19 May 2004

Firstpage

733

Abstract

A VBLAST-OFDM system with linear constellation precoding (LCP) tool is proposed for wideband wireless communications. Frequency diversity is obtained through the linear constellation precoding over OFDM subcarriers. And a joint VBLAST-LCP decoder is also proposed. The decoder combines classical VBLAST successive cancellation with maximum likelihood decoding. Computer simulation shows that VBLAST-OFDM-LCP has a performance gain of at least 8.5 dB compared with VBLAST-OFDM.

Keywords

MIMO systems; OFDM modulation; channel capacity; diversity reception; maximum likelihood decoding; space-time codes; 8.5 dB; Bell Laboratories layered space time system; MIMO; OFDM subcarriers; VBLAST-LCP decoder; VBLAST-OFDM-LCP system; frequency diversity gain; linear constellation precoding; maximum likelihood decoding; space-time transmission; spectral efficiency; successive cancellation decoding; wideband wireless communications; wireless channel capacity; Computer simulation; Electrons; Encoding; Fading; Frequency diversity; Maximum likelihood decoding; OFDM; Performance gain; Receiving antennas; Transmitting antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 2004. VTC 2004-Spring. 2004 IEEE 59th

ISSN

1550-2252

Print_ISBN

0-7803-8255-2

Type

conf

DOI

10.1109/VETECS.2004.1388925

Filename

1388925