LS Codes Assisted Multipath Channel Interference Canceller for MIMO-OFDM Systems

Author

Kim, Wonsop ; Park, Jae Joon ; Chung, Hyun Kyu ; Cha, Jongsub ; Lee, Hyuckjae

Author_Institution

Mobile Telecommun. Res. Lab., Electron. & Telecommun. Res. Inst., Daejeon

fYear

2007

fDate

22-25 April 2007

Firstpage

1465

Lastpage

1469

Abstract

MIMO-OFDM system is a promising way to achieve high data-rate wireless transmission. In this paper, loosely synchronous (LS) codes assisted multipath channel interference canceller (MCIC) is proposed for the channel estimation of MIMO-OFDM systems. Since LS codes have perfect autocorrelation and cross-correlation functions within certain vicinity of the zero shifts, LS codes assisted MCIC can substantially reduce multipath channel interference. Simulation results show that the MCIC estimator outperforms least square estimator and has slightly inferior performance as compared with linear minimum mean square error (LMMSE) estimator. Moreover the MCIC estimator has the advantage of not requiring any information about the channel statistics like auto-correlation of channels.

Keywords

MIMO communication; OFDM modulation; channel estimation; codes; interference suppression; least mean squares methods; multipath channels; radiofrequency interference; LMMSE estimator; LS codes assisted multipath channel interference canceller; MIMO-OFDM systems; autocorrelation functions; channel estimation; cross-correlation functions; least square estimator; linear minimum mean square error estimator; loosely synchronous codes; Autocorrelation; Channel estimation; Interference cancellation; Least squares approximation; MIMO; Mean square error methods; Multipath channels; OFDM; Statistics; Wireless communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 2007. VTC2007-Spring. IEEE 65th

Conference_Location

Dublin

ISSN

1550-2252

Print_ISBN

1-4244-0266-2

Type

conf

DOI

10.1109/VETECS.2007.306

Filename

4212734