Patent ID: 8385296

Claim:
A transfer device for a multi-carrier CDMA scheme, comprising: a serial to parallel converter for converting input data into parallel data; a plurality of copiers for copying each of the parallel data as many times as the number of spread factors; a spreader for spreading the respective data output by the plurality of copiers with respect to a frequency axis using different spread codes per user, when-multiplexing users using a block-based partial carrier spreading, the block being composed of multi carriers; and an IFFT unit for performing inverse fast Fourier transform (IFFT) on the data spread by the spreader and transmitting the IFFT-performed data through a transmit antenna, wherein the spreader divides the spread codes which are multiplied to a plurality of data output by one of the copiers respectively into blocks corresponding to the number of the users, applies the different spread codes of the divided blocks correspond to the users and performs the block-based partial carrier spreading.