Linear Precoding For MIMO STC-OFDM And Blind Channel Estimation

Author

Zeng, Yonghong ; Leyman, A. Rahim

Author_Institution

Inst. for Infocomm Res., A*STAR, Singapore

fYear

2006

fDate

4-7 Dec. 2006

Firstpage

127

Lastpage

130

Abstract

A blind channel estimation for MIMO STC-OFDM is proposed based on nonredundant linear precoding. The precoding introduces correlations to the inputs. By modifying and eigen-decomposing the statistical autocorrelation matrix of the frequency domain received signals, the channels are estimated subject to a matrix (with size 2K times K, where K is the number of transmitters) ambiguity. Several precoding matrices are given, which do not change the power of the precoded block and have fast algorithms to implement the precoding and decoding. The frequency domain method is applicable to CP-OFDM. Simulations show that the method is effective and robust

Keywords

MIMO systems; OFDM modulation; channel estimation; correlation methods; precoding; space-time codes; MIMO STC-OFDM; blind channel estimation; linear precoding; orthogonal frequency division multiplexing; space time coding; statistical autocorrelation matrix; Autocorrelation; Blind equalizers; Decoding; Diversity methods; Frequency domain analysis; Frequency estimation; MIMO; OFDM; Receiving antennas; Transmitting antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2006. APCCAS 2006. IEEE Asia Pacific Conference on

Conference_Location

Singapore

Print_ISBN

1-4244-0387-1

Type

conf

DOI

10.1109/APCCAS.2006.342330

Filename

4145348