OFDM Transmitter capable of preventing the distortion of OFDM signal according to inserting synchronization symbol

摘要

PURPOSE: An OFDM(Orthogonal Frequency Division Multiplexing) transmitter for blocking the distortion of an OFDM signal generated according to the insertion of a synchronous symbol is provided to prevent distortion generated in the OFDM signal according to shaping filtering performed for limiting an occupation bandwidth of the OFDM signal into which PN(Pseudo Noise sequence) information is inserted. CONSTITUTION: A GI(Guide Interval) inserting unit(300) inserts a GI into an OFDM signal for restraining interference between OFDM signals. A shaping filter(400) performs the shaping filtering of PN information for limiting band with respect to a time axis. An additional information inserting unit(500) inserts filtered PN information into the OFDM signal into which the GI is inserted.