Novel Carrier Frequency Offset Estimator in MIMO-OFDM System

In this paper, the authors address the problem of Carrier Frequency Offset (CFO) estimation for Multiple-Input Multiple-Output (MIMO) Orthogonal Frequency Division Multiplexing (OFDM) systems. The authors reconstruct the received signal to form data model with multi-invariance property, and then multi-invariance MUSIC algorithm for CFO estimation is proposed. Their proposed algorithm has the better CFO estimation performance than ESPRIT method and multi-invariance ESPRIT, and even works well without virtual carrier. Furthermore, their algorithm qualifies the estimation for both integer CFO and fractional CFO. Simulation results illustrate performance of this algorithm.

Provided by: Nanjing University of Aeronautics and Astronautics Topic: Mobility Date Added: Mar 2011 Format: PDF

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