Receiver with automatic frequency control

摘要

In a receiver, a frequency offset estimating circuit (16) inputs a received signal and a decision value from a decision circuit (15), and estimates a frequency offset. A CIR estimating circuit (12) inputs the estimated frequency offset, the received signal and the decision value, and estimates CIR. A complex conjugate circuit (13) calculates a complex conjugate of the CIR. A multiplication circuit (14) multiplies the complex conjugate and the received signal. Receiving the multiplied value, the decision circuit (15) outputs a decision value. <IMAGE>