Iterative cyclic prefix reconstruction and channel estimation for a STBC OFDM system

Author

Won, Hui-Chul ; Im, Gi-Hong

Author_Institution

Samsung Electron., South Korea

Volume

9

Issue

4

fYear

2005

fDate

4/1/2005 12:00:00 AM

Firstpage

307

Lastpage

309

Abstract

In order to prevent a loss of spectral efficiency due to the use of a cyclic prefix (CP), a CP reconstruction (CPR) method, such as residual intersymbol interference cancellation (RISIC), has recently been developed. In this letter, we apply the RISIC method to an Alamouti space-time block coded (STBC) orthogonal frequency division multiplexing (OFDM) system with insufficient CP. It is shown that in the STBC OFDM, tail cancellation as well as cyclic restoration of the RISIC should be repeated. An iterative channel estimation method for the STBC OFDM system with CPR is proposed. The performance of the proposed method is evaluated by computer simulation in a multipath fading environment.

Keywords

OFDM modulation; block codes; channel estimation; fading channels; interference suppression; intersymbol interference; iterative methods; multipath channels; space-time codes; Alamouti space-time block codes; OFDM; RISIC; STBC; STBC OFDM system; channel estimation; iterative cyclic prefix reconstruction; multipath fading environment; orthogonal frequency division multiplexing; residual intersymbol interference cancellation; Channel estimation; Computer simulation; Fading; Interference cancellation; Intersymbol interference; Iterative algorithms; Iterative methods; OFDM; Tail; Transmitting antennas;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2005.1413616

Filename

1413616