Linear Precoding for V-BLAST Systems in the Presence of Fading Correlations

Tingting SHI  Shidong ZHOU  Yan Yao   Ming ZHAO  

IEICE TRANSACTIONS on Communications   Vol.E89-B   No.11   pp.3136-3138
Publication Date: 2006/11/01
Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e89-b.11.3136
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Wireless Communication Technologies
vertical Bell laboratories layered space-time (V-BLAST),  linear precoding,  fading correlation,  channel state information (CSI),  bit error rate (BER),  

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This letter proposed a linear precoding scheme for the V-BLAST system that requires only knowledge of the statistical CSI; the transmitter does not need the instantaneous CSI. Power allocation on the eigenmodes of the transmit correlation matrix is one way to minimize bit error rate (BER). Simulation results show that the proposed precoding V-BLAST system provides a significant reduction in the BER compared with the conventional V-BLAST systems.