Detection of frame synchronization in a multicarrier receiver

摘要

The present invention provides a technique of providing a frame synchronization detector in an OFDM receiving apparatus to shorten the time before frame synchronization is established. A control information extraction unit extracts control information from a carrier signal, and a control information storage unit stores one frame of the control information. A reliability calculation unit calculates the reliability corresponding to the provisional symbol number output from a symbol number generation unit with reference to the control information stored in the control information storage unit. A maximum value detection unit compares a plurality of reliabilities calculated in the reliability calculation unit, and outputs the provisional symbol number when the maximum reliability is calculated, as a normal symbol number.