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Analysis of pilot-symbol aided channel estimation for MIMO-OFDM systems

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4 Author(s)
Han Zhang ; Nat. Key Lab. of Commun., Univ. of Electron. Sci. & Technol. of China, China ; Jiming Chen ; Youxi Tang ; Shaoqian Li

Multiple transmit and receive antennas can be used to form multiple-input multiple-output (MIMO) channels to increase the capacity by a factor of the minimum number of transmit and receive antennas. Orthogonal frequency division multiplexing (OFDM) for MIMO channels (MIMO-OFDM) can improve the performance by mitigating intersymbol interference and enhancing system capacity. The paper investigates pilot-symbol aided channel estimation (PSACE) for MIMO-OFDM systems. Two approaches are investigated: first, zero pilot patterns use all available pilot symbols simultaneously; second, a nonzero pilot pattern is allocated for each transmit antenna exclusively. The Wiener filters are derived for both approaches.

Published in:

Communications, Circuits and Systems, 2004. ICCCAS 2004. 2004 International Conference on  (Volume:1 )

Date of Conference:

27-29 June 2004