Browsing by Author "Chung, Yuan-Hwui"

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Joint Estimation of CFO and Receiver I/Q Imbalance Using Virtual Subcarriers for OFDM Systems
(2012)
Chang, Chao-Wei
;
Chung, Yuan-Hwui
;
Phoong, See-May
;
Lin, Yuan-Pei
;
電機工程學系
In this paper, we study the estimation of carrier frequency offset (CFO) in the presence of the receiver in-phase and quadrature-phase (I/Q) imbalance for orthogonal frequency division multiplexing (OFDM) systems. By minimizing the energy of the samples on the virtual subcarriers, our proposed algorithm can jointly estimate the CFO and I/Q parameters using one OFDM block. When the CFO is small, a closed-form solution can be obtained. Simulation results show that our proposed method can provide a good performance for both of the I/Q and CFO estimation and it compares favorably with a recent method.