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Blind Carrier Frequency Offset Estimation in MIMO-OFDM
IEICE TRANSACTIONS on Communications
Publication Date: 2005/10/01
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Wireless Communication Technologies
MIMO-OFDM, carrier frequency offset, DOA matrix, virtual carrier,
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We propose a DOA-Matrix based blind CFO estimation method for a MIMO-OFDM system with Virtual Carriers. The method estimates CFO in closed-form by jointly exploiting the shift-invariant structure of time-domain signal received on multiple receive antennas. In contrast to previous training-based methods, the proposed method is bandwidth efficiency. We also present numerical simulation results for different transmit and receive antenna configurations and for different record lengths.