In one embodiment of the present invention, a method by which a terminal transmits a signal in a wireless communication system comprises the steps of: generating a sequence having a length of 63 and having a punctured central element; inserting one or more zeros among respective elements of the sequence and mapping the sequence to RE; and transmitting the mapped sequence, wherein the number of one or more zeros inserted among the respective elements of the sequence corresponds to (a repetition factor—1), and zeros are additionally inserted such that the sequence is symmetrical with respect to the central element of the sequence, when the repetition factor is an even number.