A blind CFO estimator based on smoothing power spectrum for OFDM systems
IEEE Transactions on Communications
Low complexity pilot aided frequency synchronization for OFDMA uplink transmission
IEEE Transactions on Wireless Communications
Iterative carrier-frequency offset estimation for generalized OFDMA uplink transmission
IEEE Transactions on Wireless Communications
Iterative detection and frequency synchronization for OFDMA uplink transmissions
IEEE Transactions on Wireless Communications
A time and frequency synchronization scheme for multiuser OFDM
IEEE Journal on Selected Areas in Communications
Channel-independent synchronization of orthogonal frequency division multiple access systems
IEEE Journal on Selected Areas in Communications
Symbol Detection of IDMA Systems in the Presence of Carrier Frequency Offsets
Wireless Personal Communications: An International Journal
An Iterative CFO Estimation Using MVDR Criterion for Interleaved OFDMA Uplink Systems
Wireless Personal Communications: An International Journal
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The carrier frequency offset (CFO) estimation is an important task for orthogonal frequency-division multiple-access (OFDMA) systems. Making use of the intrinsic periodic structure of the received signal samples, an effective Unitary-ESPRIT algorithm based on unitary transformation technique is proposed for the CFO estimation problem. Compared with other recently proposed CFO estimation approaches, the proposed algorithm offers a number of advantages. Firstly, the presented approach can reduce the computation complexity considerably, since it is efficiently formulated in terms of real-valued computation except for the data preprocessing. Secondly, it can provide better CFO estimation performance by incorporating the data stacking technology and the unitary transformation, etc. Simulation results demonstrate the efficacy of the proposed algorithm.