Channel Estimation Technique for MIMO-OFDM over Fast Fading Channels

Jin-Goog KIM  Jong-Tae LIM  

IEICE TRANSACTIONS on Communications   Vol.E91-B   No.7   pp.2409-2412
Publication Date: 2008/07/01
Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e91-b.7.2409
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Wireless Communication Technologies
MIMO,  OFDM,  fast fading,  channel estimation,  

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A channel estimation method for multiple input multiple output (MIMO)-OFDM with fast fading channels is proposed to increase estimation quality and reduce the computational complexity. Specifically, we use a space-time correlation between channel coefficients, and compensate the ICI term. Since ICI compensation can be obtained without any pilot symbols for target OFDM block, our proposal is practical for real-time systems. The computational complexity is reduced by considering only dominant data symbols.