RECEIVER DEVICE, COMMUNICATION SYSTEM AND COMMUNICATION METHOD

摘要

PROBLEM TO BE SOLVED: To provide a receiver device capable of improving an IQ balance characteristic without deteriorating transmission efficiency, by enabling calculation of a weight that makes a training signal unnecessary.

SOLUTION: In a demodulation device of a receiver in a terminal, a synchronization processor 60 corrects processing timing and frequency deviation using a preamble added to a data signal and a pilot signal. A channel status estimator 64 estimates a channel status from the preamble signal. Based on the estimated channel status, an equalizer 65 performs equalization processing on a reception signal. A weight calculator 67 calculates a weight for IQ imbalance compensation from the signal after equalization processing. Based on the calculated weight, an error compensator 68 compensates IQ imbalance by adding after multiplying the weight by the signal after the equalization processing.

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