TITLE:
A Novel Blind Channel Estimation for a 2x2 MIMO System
AUTHORS:
Xia LIU, Marek E. BIALKOWSKI, Feng WANG
KEYWORDS:
MIMO, Channel Estimation, Semi-Blind Channel Estimation, Phase Ambiguity
JOURNAL NAME:
International Journal of Communications, Network and System Sciences,
Vol.2 No.5,
August
21,
2009
ABSTRACT: A novel blind channel estimation method based on a simple coding scheme for a 2 by 2 multiple input multiple output (MIMO) system is described. The proposed algorithm is easy to implement in comparison with conventional blind estimation algorithms, as it is able to recover the channel matrix without performing singular value decomposition (SVD) or eigenvalue decomposition (EVD). The block coding scheme accompanying the proposed estimation approach requires only a block encoder at the transmitter without the need of using the decoder at the receiver. The proposed block coding scheme offers the full coding rate and reduces the noise power to half of its original value. It eliminates the phase ambiguity using only one additional pilot sequence.