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Joint Carrier-Frequency Offset and Channel Estimation for MIMO-OFDM Transmission

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Abstract

In this paper, we consider a multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) system operating over frequency-selective fading channels. We propose a novel scheme for joint carrier-frequency offset (CFO) and channel estimation based on the expectation–maximization (EM) algorithm. Furthermore, the Cramer-Rao bounds (CRBs) for both CFO and channel estimators are exploited to evaluate the performance of the proposed scheme. Computer simulations show that the proposed algorithm achieves almost ideal performance compared with the CRBs for both channel and frequency offset estimations.

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Authors and Affiliations

  1. Faculty of Electrical Engineering, K.N.Toosi University of Technology, P. O. Box 16315-1355, Tehran, Iran

    S. Salari, M. Ardebilipour & M. Ahmadian

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  1. S. Salari
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  2. M. Ardebilipour
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  3. M. Ahmadian
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Correspondence to S. Salari.

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Salari, S., Ardebilipour, M. & Ahmadian, M. Joint Carrier-Frequency Offset and Channel Estimation for MIMO-OFDM Transmission. Wireless Pers Commun 47, 303–314 (2008). https://doi.org/10.1007/s11277-008-9466-5

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  • DOI: https://doi.org/10.1007/s11277-008-9466-5

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