Multiple Invariance MUSIC-Based Blind Carrier Frequency Offset Estimation for OFDM System with Multi-Antenna Receiver |
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| Authors: | Xiaofei Zhang Lingyun Xu Fei Wang Dazhuan Xu |
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| Affiliation: | 1. Department of Electronic Engineering, Nanjing University of Aeronautics & Astronautics, 210016, Nanjing, China
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| Abstract: | In this paper, we address the problem of carrier frequency offset (CFO) estimation for orthogonal frequency division multiplexing
(OFDM) systems with multi-antenna receiver. The received signal can be reconstructed to form data model with multi-invariance
property, and then a multi-invariance MUSIC algorithm for CFO estimation is proposed. This algorithm has better performance
of CFO estimation than ESPRIT method, multi-invariance ESPRIT method and trilinear decomposition algorithm, and also qualifies
the estimation for both integer CFO and fractional CFO. Simulation results illustrate validity of this algorithm. |
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