irrespective of the target position and the alias positions an unexpected overlapping occurs between the channel response and the alias of the rx sequence due to the channel delay spreading and the propagation delay so that the confusion between the target position and the alias position may occur among different cs applying sequences accordingly if the restricted case is decided when the cs applying interval is established in the cazac sequence the present invention considers the alias generated in the channel response so that it establishes the cs applying interval during a specific period in which the channel response of the rx sequence does not overlap with the alias of the above channel response fig4 shows an exemplary case in which the m sized where m sequence index alias occurs when cazac sequence is generated in a frequency domain however if the cazac sequence is generated in the time domain the alias generation position caused by the doppler shift of the 1 subcarrier spacing may be determined in different ways all the cs applying cases used for the individual domains will hereinafter be described in detail for the convenience of description and better understanding of the present invention fig5 u02dc 11 assume that the cyclic shift unit is set to t 0 fig5 is a conceptual diagram illustrating a method for establishing a new.