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| An Adaptive Equalization Algorithm in Space-Time Block Coded OFDM System |
| Shao Huai-zong; Peng Qi-cong; Li Yu-bai |
| Inst. of Comm. and Info. Eng. of UEST of China Chengdu 610054 China |
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Abstract In this paper, an adaptive equalization algorithm used in Space-Time Block Coded (STBC) OFDM system with Alamouti scheme is proposed. In term of the orthogonal property of Alamouti scheme and the character of the OFDM system with multiple antenna transmitter, the proposed algorithm gets an equivalent model expression of receiver signal for STBC-OFDM system by flexible transform method; Studying on II matrix, inverse of size of 2K×2K matrix in Block RLS(BRLS) can be obtained by getting the inverse of K matrices of 2×2 gotten by decomposing it, so that the complexity of computation and receiver has been decreased. The simulation results prove the validity and property of fast convergence of the proposed algorithm.
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Received: 14 August 2002
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2004, Vol. 26 
