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Orthogonal frequency-division multiplexing (OFDM) systems are sensitive to carrier frequency off- set (CFO) which introduces intercarrier interference and significantly degrades system performance. This paper describes an iterative blind receiver consisting of a sequential Monte Carlo detector, a CFO estimator, and a compensator to reduce intercarrier interference. The framework is of low complexity due to the sepa- ration of tasks in a joint detection problem. In addition, the CFO estimator utilizes soft output of the sequen- tial Monte Carlo detector, which reduces the information loss caused by hard decisions and can obtain the CFO estimate in only one OFDM symbol. Simulation results demonstrate the effectiveness of the algorithm.
This paper describes an iterative blind receiver consisting of a sequential Monte Carlo detector, a CFO estimator, and The framework is of low complexity due to the separability of tasks in a joint detection problem. In addition, the CFO estimator utilizes soft output of the sequenced Monte Carlo detector, which reduces the information loss caused by hard decisions and can obtain the CFO estimate in only one OFDM symbol. Simulation results demonstrate the effectiveness of the algorithm.