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

Authors:
S. Salari;M. Ardebilipour;M. Ahmadian
Affiliations:
Faculty of Electrical Engineering, K.N.Toosi University of Technology, Tehran, Iran;Faculty of Electrical Engineering, K.N.Toosi University of Technology, Tehran, Iran;Faculty of Electrical Engineering, K.N.Toosi University of Technology, Tehran, Iran
Venue:
Wireless Personal Communications: An International Journal
Year:
2008

Citing 4
Cited 2

OFDM for Wireless Multimedia Communications

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A MIMO-OFDM channel estimation approach using time of arrivals

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Optimal training signals for MIMO OFDM channel estimation

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OFDM carrier and sampling frequency synchronization and its performance on stationary and mobile channels

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Full length article: Blind tracking of channel state and multiple frequency offsets in MIMO-OFDM systems

Physical Communication
RLS-Based Estimation and Tracking of Frequency Offset and Channel Coefficients in MIMO-OFDM Systems

Wireless Personal Communications: An International Journal

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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.