| 摘要 |
PURPOSE: A system of transmitting a multi carrier for improving performance of a multi-carrier receiving system is provided to insert PN(Pseudo Noise) information for synchronizing a transmitter with a receiver into an OFDM signal, and to obtain synchronization in a previous time region before carrying out a DFT(Discrete Fourier Transform) function, thereby improving a signal processing speed. CONSTITUTION: A GI(Guard Interval) inserter(120) inserts a GI into an OFDM signal to suppress an interference between symbols of the OFDM signal. A PN generator(130) generates PN information. A synchronous information former(140) adds system information to the PN information, and forms synchronous information. A synchronous information inserter(150) inserts the synchronous information in front of the GI. A system information inserter(100) inserts the system information into a transmission signal. An IDFT(Inverse DFT) portion(110) modulates the transmission signal to a time region, and forms the OFDM signal of the time region.
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