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| Channel Estimation Based on Pilot-Assisted for MIMO-OFDM Systems |
| Zhou Peng; Zhao Chun-ming; Sheng Bin |
| National Mobile Communication Research Lab., Southeast University, Nanjing 210096, China |
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Abstract The LMMSE channel estimation algorithms based on Pilot-Assisted is investigated for MIMO-OFDM systems，and the Low-Bound of MSE for LMMSE channel estimation is derived. A low rank channel estimator, at first, by using Singular Value Decomposition (SVD) is presented to reduce the complexity; Secondly, a simplified algorithm by using optimal pilot design is proposed. The simplified algorithm reduces not only the complexity evidently, but also attains the best estimation performance; Finally, The methods for estimating channel properties are developed.
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Received: 25 April 2005
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2007, Vol. 29 
