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

被引：19

作者：

Won, HC ^{[1
]}

Im, GH ^{[1
]}

机构：

[1] POSTECH, Dept Elect & Elect Engn, Pohang 790784, South Korea

来源：

IEEE COMMUNICATIONS LETTERS | 2005年 / 9卷 / 04期

关键词：

orthogonal frequency division multiplexing; space-time block code; channel estimation; cyclic prefix reconstruction;

D O I：

10.1109/LCOMM.2005.04007

中图分类号：

TN [电子技术、通信技术];

学科分类号：

0809 ;

摘要：

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.

引用

页码：307 / 309

页数：3

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