The present invention is part of a pilot without a short (short) block for, pilot to mix the orthogonal frequency division for uplink multiple access (OFDMA) system and a single carrier frequency division multiple access method in next-generation mobile communication systems data insert in order to selectively use the relates to a transmission apparatus and a method of transmitting an orthogonal frequency division multiple access (OFDMA) and single carrier frequency division multiple access (SC-FDMA), at a device for transmitting a pilot, inserting a pilot into the modulated symbols and pilot insertion means for inserting a cyclic prefix (CP) insertion codes for said pilots; Up-sampling processing means for receiving the pilot symbol inserted by the pilot insertion means performs the up-sampling; Interpolation processing means so that the yarn data in the frequency domain in the appropriate sub-carrier for the output of the up-sampling processing means by performing the interpolation value and the circular convolution filter for performing an interpolation process; And a cyclic prefix insertion unit inserting a cyclic prefix numeral for the output of the interpolating means. OFDMA, SC-FDMA, orthogonal, frequency division, multiple-protection section, rotation, displacement, interpolation, pilot, CP