Subspace based channel estimation in MIMO-OFDM systems [mobile radio applications]

Author

Bai, Wei ; Bu, Zhiyong

Author_Institution

Shanghai Res. Center for Wireless Commun., China

Volume

2

fYear

2004

fDate

17-19 May 2004

Firstpage

598

Abstract

A blind channel identification problem, based on exploiting the presence of a virtual carrier, is investigated for MIMO-OFDM systems. Sufficient identifiability conditions are established for the MIMO-OFDM channel to be identifiable up to a unitary matrix. And the subspace blind channel identification method is proposed. The method is attractive for its potential to increase the system´s channel utilization due to the elimination of the cyclic prefix. Computer simulation results are finally provided to illustrate the effectiveness of the proposed blind channel identification method.

Keywords

MIMO systems; OFDM modulation; channel estimation; mobile radio; MIMO-OFDM systems; blind channel identification; channel utilization; cyclic prefix elimination; identifiability conditions; mobile wireless channel; subspace based channel estimation; unitary matrix; virtual carrier; Algorithm design and analysis; Bandwidth; Channel estimation; Computer simulation; Internet; MIMO; OFDM; Power system reliability; Virtual colonoscopy; Wireless communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 2004. VTC 2004-Spring. 2004 IEEE 59th

ISSN

1550-2252

Print_ISBN

0-7803-8255-2

Type

conf

DOI

10.1109/VETECS.2004.1388898

Filename

1388898