A New Iterative Channel Estimation Scheme for V-BLAST MIMO-OFDM Systems

Author

Qiao, Xiaoqiang ; Zhao, Hangsheng ; Li, Yusheng ; Liu, Yongxiang

Author_Institution

Nanjing Telecommun. Technol. Inst., Nanjing

fYear

2009

fDate

27-28 Feb. 2009

Firstpage

48

Lastpage

52

Abstract

A new iterative channel estimation scheme for V-BLAST MIMO-OFDM systems is proposed in this paper. The channel estimation consists of two parts. Firstly, we use pilot-symbol-aided (PSA) method to interpolate the channel, and get the initial channel estimation of the systems. Then, with Turbo iterative decoding, we feedback the information bits to the channel estimator and the EM algorithm is used for iterative channel estimation. The simulation results show that the channel estimation performance of the systems is improved greatly as the number of iterations increases.

Keywords

MIMO communication; OFDM modulation; channel coding; channel estimation; interpolation; iterative decoding; space-time codes; turbo codes; EM algorithm; V-BLAST MIMO-OFDM system; channel interpolation; iterative channel estimation; pilot-symbol-aided method; turbo iterative decoding; Channel estimation; Feedback; Intersymbol interference; Iterative algorithms; Iterative decoding; MIMO; OFDM; Receiving antennas; Transmitting antennas; Turbo codes; EM algorithm; MIMO-OFDM; Turbo iterative decoding; channel estimation;

fLanguage

English

Publisher

ieee

Conference_Titel

Communication Software and Networks, 2009. ICCSN '09. International Conference on

Conference_Location

Macau

Print_ISBN

978-0-7695-3522-7

Type

conf

DOI

10.1109/ICCSN.2009.61

Filename

5076809