Apparatus and method for generating and detecting preamble symbol

A method of detecting a preamble symbol in an Orthogonal Frequency Division Multiplexing (OFDM) system, the method comprising:

• receiving a preamble comprising a plurality of symbols generated based on a combination of a first main body sequence, a first prefix, and a first postfix;
• generating delayed sequences by sequentially delaying a sequence of the received preamble;
• calculating correlation values by mutually correlating the sequence of the received preamble and the delayed sequences;
• and
• detecting a location of the plurality of symbols, based on the correlation values,
• wherein the first postfix corresponds to samples in a preset section in the first main body sequence, and the first prefix corresponds to samples in at least a portion of a section remaining by excluding the preset section from the first main body sequence.