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Blind Carrier Frequency Offset Estimation via Power Spectrum Analysis in MIMO OFDM Systems

Authors
Journal
Tsinghua Science & Technology
1007-0214
Publisher
Institute of Electrical and Electronics Engineers
Publication Date
Volume
14
Issue
1
Identifiers
DOI: 10.1016/s1007-0214(09)70021-5
Keywords
  • Information Science And Technology

Abstract

Abstract As a generalization of orthogonal frequency-division multiplexing (OFDM) systems, multi-input multi-output (MIMO) OFDM systems are very sensitive to carrier frequency offset (CFO). This paper proposes a blind CFO estimation method based on power spectrum analysis, which has high bandwidth efficiency and is much less complex. This method can be used to estimate the residual CFO, which is less than half of the subcarrier spacing. The method uses a cosine cost function to get a closed-form CFO estimate. Simulation results illustrate that the method is effective for MIMO OFDM systems.

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