Blind channel estimator for MIMO-OFDM systems based on linear non-redundant precoding

Author

Guo, Jianxin ; Jiang, Lei ; Gou, Yanxin ; Meng, Xiangru

Author_Institution

Inst. of Telecommun. Eng., Air Force Eng. Univ., Xi´´an, China

Volume

1

fYear

2005

fDate

23-26 Sept. 2005

Firstpage

44

Lastpage

47

Abstract

In this paper, a blind channel estimator, which is based on linear non-redundant precoding and second-order statistics, is proposed for space time block (STBC) coded MIMO-OFDM systems. According to the complex orthogonal properties of the STBCs, the channel estimate with a scalar ambiguity can be obtained through a series of simple linear transformation. Simulation results show that the proposed scheme can track the time-varying channel state well and thus improve the system performance when the number of the statistical data is properly chosen.

Keywords

MIMO systems; OFDM modulation; channel coding; channel estimation; linear codes; precoding; statistical analysis; time-varying channels; MIMO-OFDM systems; blind channel estimator; linear nonredundant precoding; second-order statistics; space time block coded; time-varying channel; Channel state information; MIMO; OFDM; Receiving antennas; State estimation; Statistics; System performance; Time-varying channels; Transmitting antennas; Wireless communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications, Networking and Mobile Computing, 2005. Proceedings. 2005 International Conference on

Print_ISBN

0-7803-9335-X

Type

conf

DOI

10.1109/WCNM.2005.1543979

Filename

1543979