Multirate systems and filter banks
Multirate systems and filter banks
Orthogonalization of OFDM/OQAM pulse shaping filters using the discrete Zak transform
Signal Processing - From signal processing theory to implementation
A subspace-based approach to blind channel identification in pulseshaping OFDM/OQAM systems
IEEE Transactions on Signal Processing
Blind Frequency-Offset Estimation for OFDM/OQAM Systems
IEEE Transactions on Signal Processing
ML estimation of time and frequency offset in OFDM systems
IEEE Transactions on Signal Processing
A fine blind frequency offset estimator for OFDM/OQAM systems
IEEE Transactions on Signal Processing
Data-aided symbol timing and CFO synchronization for filter bank multicarrier systems
IEEE Transactions on Wireless Communications
Data-aided synchronization for OFDM/OQAM systems
Signal Processing
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In this paper we consider the problem of blind carrier-frequency offset (CFO) estimation for pulse-shaping orthogonal frequency-division multiplexing (OFDM) systems based on offset quadrature amplitude modulation (OQAM). In particular, under the assumption of low signal-to-noise ratio, three maximum-likelihood (ML) CFO estimators for non-dispersive channels are derived. Due to their significant computational complexity a more feasible closed-form CFO synchronization algorithm is considered. The performance of the derived blind estimators is assessed via computer simulations and compared with that of a blind CFO estimator previously proposed in the literature, exploiting the second-order cyclostationarity property of the OFDM/OQAM signal.