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| A practical pilot-based channel estimation method for space-time coded ofdm system |
| Qu Daiming; Zhu Guangxi; Chen Zhonglin |
| Dept. Electron. & Info. Eng., Huazhong Uni. of Sci. & Tech., WuHan 430074, China |
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Abstract This paper deals with pilot-based channel estimation of space-time coded OFDM system in frequency selective channels. DFT-based LS and LMMSE method are studied. A practical channel estimation method is proposed. In proposed method the complexity of LS and LMMSE methods is greatly reduced by optimally designing the pilot symbols. And the performance demonstrated by simulation is close to idea channel information.
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Received: 24 June 2002
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2003, Vol. 25 
