Title :
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
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;
Conference_Titel :
Vehicular Technology Conference, 2004. VTC 2004-Spring. 2004 IEEE 59th
Print_ISBN :
0-7803-8255-2
DOI :
10.1109/VETECS.2004.1388925
