OFDM TRANSMITTER CAPABLE OF IMPROVING RECEIVING PERFORMANCE AND SIGNAL PROCESSING METHOD THEREOF

摘要

PURPOSE: An OFDM transmitter capable of improving receiving performance and a signal processing method of the transmitter are provided to allow a receiver to easily extract information required for a channel to improve receiving performance. CONSTITUTION: An OFDM transmitter includes an IDFT unit(300), a guard interval insertion unit(500), and a synchronous information insertion unit(600). The IDFT unit inverse-discrete-Fourier-transforms an OFDM signal. The guard interval insertion unit inserts a guard interval into the inverse-discrete-Fourier-transformed OFDM signal in order to restrain interference between neighboring OFDM signals. The synchronous information insertion unit inserts synchronous information used for synchronization of the OFDM signal and channel prediction into the OFDM signal having the guard interval. The synchronous information has a PN sequence and channel information.