Blind Carrier Frequency Offset Estimation for MIMO-OFDM With Constant Modulus Constellations via Rank Reduction Criterion

In this paper, we propose a new blind carrier frequency offset (CFO) estimator for multiple-input-multiple-output orthogonal frequency-division multiplexing (MIMO-OFDM) systems with constant modulus constellation. The proposed estimator exploits a rank reduction criterion and works in the general MI...

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Bibliographic Details
Published in:IEEE transactions on vehicular technology 2016-08, Vol.65 (8), p.6809-6815
Main Authors: Zhang, Weile, Yin, Qinye
Format: Article
Language:English
Subjects:
Blinds
Carrier frequencies
Carrier frequency offset (CFO)
constant modulus constellations
Constants
Constellations
Cost function
Criteria
Estimation
Estimators
Frequency division multiplexing
multi-input multi-output (MIMO)
OFDM
Offsets
Orthogonal Frequency Division Multiplexing
orthogonal frequency division multiplexing (OFDM)
Receiving antennas
Reduction
Signal to noise ratio
Transmitting antennas
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Description
Summary:In this paper, we propose a new blind carrier frequency offset (CFO) estimator for multiple-input-multiple-output orthogonal frequency-division multiplexing (MIMO-OFDM) systems with constant modulus constellation. The proposed estimator exploits a rank reduction criterion and works in the general MIMO scenarios where no space-time block coding is assumed. As compared with several existing competitors, the proposed estimator does not suffer from performance error floor as SNR increases; thus, it can behave better under the moderate- and high-SNR regions. The Cramer-Rao bound of CFO estimation for MIMO-OFDM with constant modulus constellation is derived, and the numeral results are provided to corroborate the proposed studies.
ISSN:0018-9545
1939-9359
DOI:10.1109/TVT.2015.2481727